| JPRS Report, Science & Technology, China |
26 NOV 90 |
47 pages |
| Authors:
JOINT PUBLICATIONS RESEARCH SERVICE ARLINGTON VA
|
 | This report from China contains articles on Science and Technology. |
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| Development of Advanced Methods Based on Stable Isotope Technology for Studies of Exercise in Heat |
20 OCT 90 |
|
| Authors:
Morteza Janghorbani; CHICAGO UNIV IL DEPT OF MEDICINE
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 | Stable isotope methods were developed for studies of dynamics of turnover of total body water, extracellular and intracellular fluid volume, total body potassium and magnesium. The methods were based on the new technique of inductively coupled plasma mass spectrometry. These methods were then applied for studies of distribution of body water in micro swine, studies of total body potassium and magnesium in the rat, and investigation of turnover of endogenous ... |
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| Chemical Synthesis Study of Deuterated Epoxy Resins |
APR 90 |
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| Authors:
Shwn-Meei Linden; Steven A. Sims; Richard P. Chartoff; John M. Butler; DAYTON UNIV OH RESEARCH INST
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| Both the hydrogenated and deuterated epoxy resins of bisphenol A and epichlorohydrin have been synthesized using the same synthetic procedure. Mixtures of deuterated resin with piperidine-D11 were cured side by side with the comparable hydrogenated mixtures. The decomposition temperatures observed in Thermal Gravimetric Analysis under both air and inert atmospheres for the cured deuterated resins are in general 10 to 30 C higher than the hydrogenated versions. The former also ... |
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| Visual Enhancement of Myelinated Tissues in the Central Nervous System of the Rat Using Sudan Black B |
1990 |
4 pages |
| Authors:
Karen R. Olson; Richard K. Traub; ARMY MEDICAL RESEARCH INST OF CHEMICAL DEFENSE ABERDEEN PROVING GROUND MD
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| This report investigated the quantitative distribution of radio labelled compounds in the central nervous system of the rate using autoradiographic techniques. To complement our autoradiographic images, we searched for a suitable fiber stain delineating myelinated structures using fresh frozen tissue. Surprisingly, the majority of staining procedures were exclusive to fixed tissues. These techniques applied to fresh frozen brain tissue produced poor differentiation of myelinated and nonmyelinated areas and were generally ... |
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| Water-Quality, Well-Construction, and Ground-Water Level Data for an Investigation of Radionuclides in Ground Water, Hickman and Maury Counties, Tennessee |
1990 |
19 pages |
| Authors:
Gregg E. Hileman; GEOLOGICAL SURVEY WASHINGTON DC
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| Water-quality, well-construction, and ground-water level data were collected for an investigation of radionuclides in ground water in Maury and Hickman Counties, Tennessee. Seventeen wells and 3 springs were sampled in Hickman County, and 20 wells were sampled in Maury County. Data are presented in tables. Maps of each county show the Location of the data-collection sites. Samples from each site were analyzed for radionuclides, common and trace inorganic ions, indicators ... |
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| JPRS Report Science and Technology, Japan: Atomic Energy Society 1989 Annual Meeting |
13 OCT 1989 |
33 pages |
| Authors:
JOINT PUBLICATIONS RESEARCH SERVICE ARLINGTON VA
|
| Selected abstracts of papers presented at the 1989 Annual Meeting of the Atomic Energy Society of Japan held 4-6 Apr 89 in Osaka, Japan. Topics include density of plastic shell targets, nuclear fuel shipping casks, measurement of reactivity, laser isotopes, fuel reprocessing, and fuel reprocessing plants. |
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| Experimental Testing of Corpuscular Radiation Detectors. Volume 1. Revision 1 |
07 SEP 89 |
162 pages |
| Authors:
Mario D. Grossi; RAYTHEON CO PORTSMOUTH RI SUBMARINE SIGNAL DIV
|
| Observations were performed by using Prof. Joe Weber's torsion balance, a room-temperature instrument that was constructed by University of Maryland under a subcontract from Raytheon, and was installed at LANL in Summer 1988. The torsion balance was mounted at a fixed location, close to the edge of a rotating table (1 RPM rotational speed) that Raytheon had constructed and moved to Los Alamos, NM. As the table rotated, the tritium-filled ... |
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| Experimental Testing of Corpuscular Radiation Detectors. Volume 2. Revision 1 |
07 SEP 89 |
224 pages |
| Authors:
Mario D. Grossi; RAYTHEON CO PORTSMOUTH RI SUBMARINE SIGNAL DIV
|
| Observations were performed by using Prof. Joe Weber's torsion balance, a room-temperature instrument that was constructed by University of Maryland under a subcontract from Raytheon, and was installed at LANL in Summer 1988. The torsion balance was mounted at a fixed location, close to the edge of a rotating table (1 RPM rotational speed) that Raytheon had constructed and moved to Los Alamos, NM. As the table rotated, the tritium-filled ... |
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| Large-Angle Elastic and Inelastic Scattering of Pi+ and Pi- from (28)Si and (40)Ca |
MAY 89 |
200 pages |
| Authors:
Michael P. Snell; AIR FORCE INST OF TECH WRIGHT-PATTERSON AFB OH
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| Differential cross sections were measured for Pi(+) and Pi(-) elastic scattering of Calcium 40 and Silicon 28 at incident pion energies ranging from 100 to 260 MeV at a scattering angle of 175 degs. Differential cross sections were also measured for Pi(+) and Pi(-) inelastic scattering to the 2(+), 1.78 MeV, 4(+), 4.62 MeV, and 3(-) 6.88 MeV states of 28Si at incident pion energies of 130, 180, and 226 ... |
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| Deuterium Isotope Effects During HMX Combustion: Chemical Kinetic Burn Rate Control Mechanism Verified |
Jan 1989 |
12 pages |
| Authors:
S A Shackelford; B B GOSHGARIAN; R D Chapman; R E Askins; D A Flanigan; R N Rogers; FRANK J SEILER RESEARCH LAB UNITED STATES AIR FORCE ACADEMY CO
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| The appearance of a significant deuterium isotope effect during the combustion of the solid HMX compound verifies that the chemical reaction kinetics is a major contributor in determining the experimentally observed or global burn rate. Burn rate comparison of HMX and its deuterium labeled HMX-d(8) analogue reveals a primary kinetic deuterium isotope effect (1 deg. KDIE) at 500 psig (3.55 MPa) and 1000 psig (6.99 MPa) pressure and selectively identifies ... |
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| Dynamic Positioning Systems Photogrammetric Test Course |
89 |
8 pages |
| Authors:
Anthony Niles; ARMY TOPOGRAPHIC ENGINEERING CENTER FORT BELVOIR VA
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| Many electronic dynamic positioning systems that use a variety of technologies, such as laser ranging, UHF signal ranging and satellite ranging, are currently available. With the advances in technology, these systems are undoubtedly becoming more and more accurate. In fact, real-time submeter accuracy using the differential Global Positioning System (GPS) in a boat, aircraft, or ground vehicle is not unrealistic. However, verifying positional accuracy at this level of accuracy of ... |
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| Determination of Plutonium-Beryllium Source Strength by Manganese Activation |
MAR 88 |
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| Authors:
Paul F. Whitworth Jr; AIR FORCE INST OF TECH WRIGHT-PATTERSON AFB OH SCHOOL OF ENGINEERING
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| In this study the manganese-sulfate-bath technique was used to determine the total neutron output of a Plutonium-Beryllium neutron source. Activation trials were conducted using 4 different concentrations of manganese sulfate and 3 different size containers. Correction factors for source absorption, non-leakage, and resonance absorption were calculated using data generated by MORSE, a Monte Carlo neuron transport code. Values for these factors were calculated for manganese sulfate concentrations between 5.56% and ... |
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| Evaluation of a High Pressure Proportional Counter for the Detection of Radioactive Noble Gases |
JAN 87 |
133 pages |
| Authors:
Richard E. Lackey; AIR FORCE INST OF TECH WRIGHT-PATTERSON AFB OH SCHOOL OF ENGINEERING
|
| This report presents a study of the characteristics of a high pressure proportional detector for the qualitative and quantitative analysis of radioactive noble gases. Several external sources (Americium 241, Cadmium 109 and Cobalt 57) were used to establish the detector's response at high pressures using argon fill gas. A radioactive xenon gas sample with Xenon 131m and Xenon 133 was used to demonstrate the detector's utility for the analysis of ... |
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| East Europe Report, Scientific Affairs |
08 MAR 84 |
34 pages |
| Authors:
JOINT PUBLICATIONS RESEARCH SERVICE ARLINGTON VA
|
| This report from Eastern Europe contains articles on Scientific Affairs. |
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| Isotopic Abundances and Atomic Weights of the Elements, |
1984 |
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| Authors:
P. De Bievre; M. Gallet; N. E. Holden; I. L. Barnes; NATIONAL STANDARD REFERENCE DATA SYSTEM
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| A large number of measurements describing the isotopic composition of the elements using a variety of analytical methods have been reported since the discovery of the first isotope in 1912. During the past several decades, however, mass spectrometric methods have been used, almost exclusively, to determine the isotopic composition, and thus the atomic weights, of the elements. This evaluated compilation reports the literature references for all complete mass spectrometric measurements ... |
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| Method for the Separation of Uranium Isotopes. |
03 NOV 1980 |
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| Authors:
Abraham Auerbach; DEPARTMENT OF THE NAVY WASHINGTON DC
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| A method for the separation of uranium isotopes, particularly U235 is disclosed. The method employs a frequency selective laser irradiation of an adiabatically cooled beam of UF6 molecules, followed by the 'chemionization' i.e., SbF5 + UF6 SbF6(-) + UF5(+) of the selectively irradiated UF6 molecules, and finally separates the favored U235F5(+) product. (Author) |
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| Table of Isotopes. Seventh Edition. |
APR 1978 |
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| Authors:
Edgardo Browne; Janis M. Dairiki; Raymond E. Doebler; NATIONAL STANDARD REFERENCE DATA SYSTEM
|
| An Isotope Index, ordered by atomic number (Z) and subordered by mass number (A), precedes the main table. It contains all stable nuclei, radioisotopes, and isomers that appear in the Table of Isotopes. (R-rated isotopes - those identified only in nuclear reactions - do not appear in the Isotope Index.) In addition to the Isotope designation, the Index includes the natural abundance, half-life, class (certainty of identification), and the number ... |
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| Centrifugal Distortion Analysis of the Ground Vibrational States of H2O(17) and H2O(18), |
18 NOV 1977 |
|
| Authors:
Paul Helminger; Frank C. DeLucia; DUKE UNIV DURHAM NC DEPT OF PHYSICS
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| Centrifugal Distortion in Water and Hydrogen Sulfide, |
18 AUG 1976 |
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| Authors:
R. Michael Garvey; DUKE UNIV DURHAM NC DEPT OF PHYSICS
|
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| Chesapeake Bay Radioactive Tracer Study. |
JAN 1976 |
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| Authors:
Allen R. Tool; ARMY ENGINEER WATERWAYS EXPERIMENT STATION VICKSBURG MISS
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| A radioactive tracer study was conducted in the Chesapeake Bay near the Pooles Island Deep disposal area to obtain qualitative information concerning movement of dredged material placed in the area. Approximately 15 curies of gold198 was mixed with a sediment sample and placed on the bottom of the Bay. Daily tracings of the labeled sediment revealed movement along a narrow band in the general direction of the tidal currents. Movement ... |
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| Use of the Radioisotopic Sand Tracer (RIST) System. |
JUN 1975 |
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| Authors:
Charles W. Judge; COASTAL ENGINEERING RESEARCH CENTER FORT BELVOIR VA
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| The Coastal Engineering Research Center (CERC), under a multiagency program initiated in 1966, has developed a synoptic sand tracing system capable of operating on the beach, in the surf zone, and offshore. This system has application in determining sediment movement along coastal areas. Some specific problems to which the system can be applied are: (a) Mechanisms of sediment movement; (b) improving beach fill criteria; (c) relation of engineering structures to ... |
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| Effects of Cobalt-60 on Electrical Self-Stimulation of the Brain and Blood Pressure |
13 DEC 1974 |
30 pages |
| Authors:
Alfred Bruner; LOVELACE FOUNDATION FOR MEDICAL EDUCATION AND RESEARCH ALBUQUERQUE NM
|
| The effects of 1000 and 2000 rad Cobalt-60 on electrical self- stimulation of subcortical brain areas and blood pressure were investigated to determine whether radiation-induced performance decrement occurs in a like manner for a positively-rewarded behavioral task as it does for the more typically studied shock- avoidance task. During the early post radiation minutes self- stimulation responses decreased or ceased and resumed shortly thereafter, revealing ... |
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| Self-Diffusion in Silicon Nitride. |
APR 1974 |
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| Authors:
Bernhardt J. Wuensch; Thomas Vasilos; AVCO SYSTEMS DIV WILMINGTON MASS
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| Progress is described in the first year of a program designed to obtain simultaneous measurement of Si and N self-diffusion coefficients in silicon nitride. Comparative measurements will be made at a given temperature in a variety of materials. Measurements will also be made as a function of temperature for one well characterized material. Neither Si nor N has an isotope suitable for use as a radiotracer. The stable isotopes Si29 ... |
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| Effects of Column Asymmetry on Thermal Diffusion Separations. |
JAN 1974 |
|
| Authors:
Jan P. Sorensen; Max S. Willis; Warren E. Stewart; WISCONSIN UNIV-MADISON MATHEMATICS RESEARCH CENTER
|
| SEPARATIONS.Technical summary rept.,SSorensen,Jan P. ;Willis,Max S. ;Stewart,Warren E. ;MRC-TSR-1358DA-31-124-ARO(D)-462*Isotope separation, *Thermal diffusion separation, Computer programs, Numerical analysis, Neon*Neon 20, *Neon 22, Columns(Process engineering)The theory of the Clusius-Dickel column in static operation is extended to include eccentric misalignment of the inner cylinder. Variable-property effects are included. An orthogonal expansion method is used, and a computer program is provided for general application of the method. The new theory is useful for determining ... |
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| Heavy-Atom Kinetic Isotope Effects: An Indexed Bibliography. |
JUN 1972 |
|
| Authors:
Marvin J. Stern; Max Wolfsberg; NATIONAL STANDARD REFERENCE DATA SYSTEM
|
| A bibliography of heavy-atom kinetic isotope effects has been compiled covering the complete literature from the earliest entry ground (1911) through 1965. Review articles and theoretical papers are listed through 1968. The bibliography is divided into a list of the references, an author index and a subject index. The subject index has been annotated to describe, in brief, the type of reaction being observed. The following areas have been excluded: ... |
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| TRACING SAND MOVEMENT IN THE LITTORAL ZONE: PROGRESS IN THE RADIOISOTOPIC SAND TRACER (RIST) STUDY, JULY 1968-FEBRUARY 1969, |
AUG 1970 |
55 pages |
| Authors:
David B. Duane; ARMY COASTAL ENGINEERING RESEARCH CENTER WASHINGTON D C
|
| Tagging procedures, instrumentation, field surveys and data handling techniques have been developed by the radioisotopic sand tracing study for the collection and analysis of over 12,000 bits of information per hour over a survey track of about 18,000 feet. Data obtained can be considered as nearly synoptic observations of sediment transport in a single environmental zone or in adjacent beach, surf and offshore zones. Experiments at Surf, Point Conception, Point ... |
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| RAPLOT, A COMPUTER PROGRAM FOR DATA PROCESSING AND GRAPHICAL DISPLAY FOR RADIOISOTOPIC SAND TRACER STUDY, |
MAY 1970 |
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| Authors:
Philip A. Turner; ARMY COASTAL ENGINEERING RESEARCH CENTER WASHINGTON D C
|
| RAPLOT II is a computer program for processing radiation and navigation data from field surveys of the Radioisotopic Sand Tracer (RIST) study, but is applicable to any survey type operation on the nearshore Continental Shelf. Collected data are punched onto paper tape by the data collection computer on the research vessel. The data are later transferred to magnetic tape which provides the input for the RAPLOT II Program. Program control ... |
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| Application of Radionuclides in Wear and Lubrication Investigations, |
27 FEB 1970 |
|
| Authors:
K. Wagner; FOREIGN TECHNOLOGY DIV WRIGHT-PATTERSON AFB OH
|
| The document is concerned with radioactive techniques--especially the tracer technique--which are being successfully used for combating wear by determining the degree and the mechanism of wear. The possibilities of using artificial radionuclides for the determination of wear and the transfer of material in friction processes were recognized as far back as 25 years. In this connection, investigations with technically important wear pairings preponderate strongly over fundamental research5 |
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| USE OF Rn/Ra RATIOS TO DETERMINE AIR/SEA GAS EXCHANGE AND VERTICAL MIXING IN THE OCEAN. |
06 FEB 1970 |
|
| Authors:
David R. Schink; Joel J. Sigalove; Robert L. Charnell; Norman L. Guinasso Jr; TELEDYNE ISOTOPES PALO ALTO CALIF PALO ALTO LABS
|
| A program to measure Rn(222)/Ra(226) ratios in the ocean surface layer as part of the BOMEX experiment has demonstrated that blanks are acceptably low--but significant; that radon collection is essentially complete; and that the gas can be transferred and counted at sea. Nine radon blanks and ten radon samples were run. One profile of radon ratios gave results much as expected. The results are consistent with a boundary film thickness ... |
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| MEASUREMENTS OF THE THORON CONCENTRATION OF THE LOWER ATMOSPHERE IN RELATION TO THE EXCHANGE IN THIS REGION. |
AUG 1969 |
|
| Authors:
Hans Israel; M. Horbert; C. de La Riva; TECHNISCHE HOCHSCHULE AACHEN (WEST GERMANY) FORSCHUNGSSTELLE FUER GEOPHYSIK UND METEOROLOGIE
|
| The following theoretical (Part I) and experimental (Part II) studies have been carried out: I. Theory: The exact mathematical formulations of the eddy viscosity and the eddy diffusity were derived in the frame of mixing length concept. This allowed clarification of the repeatedly discussed mutual interdependency of these quantities, which is relevant to comparison of their fundamental transport mechanism. Moreover, several basic relationships that are relevant to the understanding of ... |
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| Radioactive Sediment Tracer Tests, Houston Ship Channel, Houston, Texas. |
MAR 1969 |
|
| Authors:
Ellis D. Hart; ARMY ENGINEER WATERWAYS EXPERIMENT STATION VICKSBURG MISS
|
| Radioactive sediment tracer tests were conducted in the Houston Ship Channel to determine qualitatively the sediment movement in the channel. About 5 curies of the isotope gold 198 was thoroughly mixed with sediment samples from the channel, and the activated sediment was then deposited along the bottom at two locations. The results of tracing the deposits indicated that the activated sediment moved up-stream for several miles. Activity was recorded downstream ... |
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| The Determination of the Quantity of Radioactivity Contained in a Gaseous Effluent at the Nevada Test Site Using Gamma Dose-Rate Measurements |
DEC 1968 |
32 pages |
| Authors:
P. O. Matthews; SANDIA NATIONAL LABS LIVERMORE CA
|
| Effluent documentation may be simply stated as the determination of the radioactive materials contained in an effluent release. The quality of the effluent is usually determined by detailed laboratory analyses, whereas the quantitative determinations are the results of relatively simple calculations made at the time of release. This paper will concern itself only with the quantitative determinations presently used to arrive at effluent release ... |
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| A STANDARD METHOD FOR Fe59 FERROKINETICS. |
SEP 1968 |
|
| Authors:
Donald F. Logsdon Jr.; James F. Green; Guy M. Strong; SCHOOL OF AEROSPACE MEDICINE BROOKS AFB TEX
|
| A simple method for performing a 59Fe ferrokinetics study has been developed, combining several procedures already in use. Methods are presented for measuring plasma iron clearance, red cell iron uptake, and the movement of iron through the hematopoietic centers. Formulas are given for calculating plasma and red cell iron turnover, hemoglobin synthesis, mean erythron life-span, and mean effective erythron hemoglobinization time. (Author) |
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| THE FORMATION OF RADIOISOTOPES THROUGH THE NEUTRON-GAMMA REACTION, |
09 NOV 1967 |
|
| Authors:
L. Szirtes; L. Zsinka; FOREIGN TECHNOLOGY DIV WRIGHT-PATTERSON AFB OH
|
| The preparation of 31Si, 45Ca, 46Sc, 56Mn, 55-59Fe, 65Zn, 69m-69Zn, 71Ge, 72Ga, 75Se, 115m-115Cd, 122m-122Sb, 124m-124Sb, 134Cs, 187W, 192Ir and 204Tl is described. |
|
| Radioisotopes in the Biological Sciences: An Annotated Bibliography of Selected Literature |
APR 1967 |
116 pages |
| Authors:
Helen L. Ward; ATOMIC ENERGY COMMISSION WASHINGTON DCDIV OF BIOLOGY AND MEDICINE
|
| This bibliography contains a total of 959 selected references on the use of radioisotopes in biological research. These references were selected from the scientific literature published during the period 1958-1963. Author, isotope, and report number indexes are included. |
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| ION-EXCHANGE METHODS FOR CONCENTRATION OF TRACE ELEMENTS FROM SEAWATER. AN ANNOTATED BIBLIOGRAPHY OF METHODS, APPLICABLE ALSO TO ANALYSIS AND TO RELATED SOLUTIONS, |
15 NOV 1966 |
|
| Authors:
J. Pascual; NAVAL RADIOLOGICAL DEFENSE LAB SAN FRANCISCO CALIF
|
| The concentration of trace elements from seawater and similar solutions are described for a number of trace elements. Both organic and inorganic exchangers are used to concentrate trace elements from solutions. The summaries of the methods given here are detailed or scanty accordingly as the original papers were or were not available. Despite the brevity of the presentation of some of the methods, most of such methods are immediately usable. ... |
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| ELEMENTARY INTRODUCTION TO ISOTOPE SEPARATION. |
JUN 1966 |
|
| Authors:
Dennis Holliday; Milton S. Plesset; RAND CORP SANTA MONICA CA
|
| A discussion of six isotope separation processes; (1) the separation nozzle, (2) sweep diffusion, (3) thermal diffusion, (4) electromagnetic separation, (5) gaseous diffusion, and (6) centrifugation. The emphasis is on the physical principles involved in each process and on the use of these physical differences. Because five of the processes involve devices that give individually a very small separation, a cascade of these devices is required to effect large separations. ... |
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| POTENTIAL APPLICATIONS OF RADIOISOTOPES IN THE NAVY. |
MAY 1966 |
|
| Authors:
L. B. Gardner; A. E. Hanna; H. E. Stanton; NAVAL CIVIL ENGINEERING LAB PORT HUENEME CALIF
|
| The Naval Civil Engineering Laboratory has conducted a study of the potential applications of isotopic devices and techniques within the Naval Shore Establishment. Radiation characteristics, general applications of isotopic devices, and specific problem areas are discussed. Recommendations are included for the use of surface density and moisture gages in the inspection of compacted earth, and for additional work in the determination of the thickness of in-place steel sheet piling and ... |
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| AN ELECTROMAGNETIC MASS-SEPARATOR OF THE LABORATORY OF NUCLEAR REACTIONS, |
1966 |
|
| Authors:
A. V. Demyanov; N. I. Tarantin; Yu. A. Dyachikhin; A. P. Kabachenko; DEPARTMENT OF THE NAVY WASHINGTON DC
|
| The mass-separator, a description of which is given in the present work, was manufactured in the Laboratory of Nuclear Reactors at the Joint Institute of Nuclear Research in 1963-64, utilizing an electromagnet SP-57 A-1 of industrial manufacture. This mass-separator is intended for the separation of radio-active products, generated in nuclear reactors under the influence of fast heavy ions. Computation of the basic parameters of the massseparator and the requirements which ... |
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| FALLOUT SIMULANT DEVELOPMENT: THE SORPTION REACTIONS OF CERIUM, CESIUM, RUTHENIUM, STRONTIUM, AND ZIRCONIUM-NIOBIUM. |
NOV 1965 |
|
| Authors:
William B. Lane; STANFORD RESEARCH INST MENLO PARK CALIF
|
| The report describes the preparation of synthetic fallout. Methods are discussed for simulating selected properties of radioactive fallout so that experiments can be conducted to evaluate radiological hazards. The experiments measured solubility of radionuclides which would be available to cycle in the food chains. Heating the fallout particles to high temperatures reduced the solubility of all nuclides studied. The methods described can be used by other researchers to prepare synthetic ... |
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| Radioactive Sediment Tracer Tests Near the North and South Jetties, Galveston Harbor Entrance, |
NOV 1965 |
|
| Authors:
L. F. Ingram; R. S. Cummins; H. B. Simmons; ARMY ENGINEER WATERWAYS EXPERIMENT STATION VICKSBURG MISS
|
| The tests described herein were conducted to determine whether potential shoaling material passes through or around the north and south jetties of Galveston Harbor from the Gulf of Mexico sides of the jetties into the entrance channel area. Approximately 3 curies of particulate tracer material (ground glass) labeled with gold 198, simulating the bottom sediments outside the jetties, was released at each of seven locations on a line about 100 ... |
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| Project SEDAN Food-Chain Relationships of Iodine-131 in Nevada Following The SEDAN Test of July 1962. |
24 JUL 1964 |
|
| Authors:
William E. Martin; Frederick B. Turner; CALIFORNIA UNIV LOS ANGELES LAB OF NUCLEAR MEDICINE AND RADIATION BIOLOGY
|
| Following the Sedan tests of July 6,1962, in Nevada, the applicability of mathematical models to food-chain transfers of iodine-131 in natural environments was examined. The amounts of radioiodine measured in the thyroids of jack rabbits collected at 5-day intervals between July 5 and August 5 were compared to levels predicted by models on the basis of estimated levels of radioiodine on vegetation as of July 6. Four areas, from 20 ... |
|
| STRUCTURE OF THORIUM A-LINE |
05 SEP 1963 |
|
| Authors:
G. T. Ewan; ATOMIC ENERGY OF CANADA LTD CHALK RIVER ONTARIO
|
| The shape of the Th A-line (L1 39.85 kev) has been studied at high resolution in the Chalk River beta ray spectrometer. The broadening of the line is found to be due to two effects: (1) the nuclear recoil due to the a decay preceeding the 39.85-kev transition, and (2) the presence of the K-conversion line of a 115.1-kev transition in B1212. The relative intensities of the K 115. 1-kev ... |
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| MEASUREMENT OF GAMMA-RAY SPECTRA FROM THERMALNEUTRON CAPTURE |
AUG 1963 |
|
| Authors:
John M. Neill; Norman C. Rasmussen; Theos J. Thompson; MASSACHUSETTS INST OF TECH CAMBRIDGE
|
| An investigation of the gamma-ray spectra of several isotopes from thermal-neutron capture has been carried out. The isotopes irradiated are Sc45, Ir191, Ir193, Rh103, Dy161, Dy164, and Ho165. The technique of using the bent crystal spectrometer has been refined by means of improved development of the photographic emulsion used as a detector, by means of a formalized datataking procedure and by the use of a digital computer to analyze the ... |
|
| CALCULATION OF RATE COEFFICIENTS FOR SOME ELEMENTARY REACTIONS. HYDROGEN, DEUTERIUM, AND DEUTERIUM HYDRIDE WITH CHLORINE |
15 MAY 1963 |
32 pages |
| Authors:
Roger L. Wilkins; AEROSPACE CORP EL SEGUNDO CA
|
| Rate coefficients were calculated for the reactions of hydrogen, deuterium, and deuterium hydride with chlorine. The potential energy surfaces of the isotopic transition complexes of HCl2 and H2Cl were constructed by the Sato method to match experimental activation energies in accordance with absolute rate theory. The rate coefficients calculated using absolute rate theory are then used to evaluate the relative rates of reaction of H2/HD, H2/ D2 with chlorine atoms, ... |
|
| THE PREPARATION OF CARBON-14 LABELED TETRAMETHYL AMMONIUM BROMIDE |
Apr 1963 |
18 pages |
| Authors:
Andrew F Smetana; Jerome Haberman; Thomas C Castorina; PICATINNY ARSENAL DOVER NJ FELTMAN RESEARCH LABS
|
| Carbon-14 labeled tetramethylammonium bromide was prepared via the condensation of C-14 methyl bromide with trimethylamine using high vacuum techniques. Unrecrystallized product yields, in the range of 100% of theory (based on methyl bromide), are independent of variations in excess quantitites of trimethylamine. C-14 methyl bromide is effectively derived from an intermixture of C-14 methyl iodide with methyl bromide in the ratio of 1:350. A series of preparations from aliquots of ... |
|
| The Use of Radioisotopes in Sediment Transport Studies, |
MAR 1963 |
|
| Authors:
R. S. Cummins Jr.; L. F. Ingram; ARMY ENGINEER WATERWAYS EXPERIMENT STATION VICKSBURG MISS
|
| In 1956 the U. S. Army Engineer District, San Francisco, in conjunction with the University of California, undertook a sediment tracing project using radioactive tracers in San Francisco Bay. This initial investigation indicated the tremendous possibilities of the technique for sediment studies and assisted with the development of special tracing equipment and methods of labeling sediments. In 1960 the U. S. Army Engineer Waterways Experiment Station selected a group of ... |
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| THE ISOTOPIC EFFECT IN THE ELECTROSYNTHESIS OF OZONE BY RAYLEIGH'S METHOD |
08 Jan 1963 |
10 pages |
| Authors:
I A TIKHOMIROV; V N MELENEVSKIY; FOREIGN TECHNOLOGY DIV WRIGHT-PATTERSON AFB OH
|
|
| THE NUCLEAR PROPERTIES OF RHENIUM |
08 Dec 1962 |
20 pages |
| Authors:
R A Karam; T F Parkinson; W H Ellis; E E Menge; FLORIDA UNIV GAINESVILLE
|
| A complete decay scheme of au-196 and Au-196* is proposed. This decay scheme is based on shell model calculations and experimental measurements of the emitted gamma rays from Au-196 and Au-196*. The hlf-life of Au-196* was found to be 10.4 hours. The absolute intensity of each gamma ray associated with the decay of Au-196 and Au-196* was obtained. |
|
| THE SELF-RADIATION OXIDATION OF TRITIUM IN OXYGEN AND AIR |
08 May 1962 |
33 pages |
| Authors:
G J CASALETTO; L H GEVANTMAN; J B NASH; NAVAL RADIOLOGICAL DEFENSE LAB SAN FRANCISCO CA
|
| The rate of self-radiation oxidation of ritium has been studied in atmospheres of oxygen and air by direct analysis of products as a function of tim . Second-ord r dependence on tritium concentration was observe below 1 mc/ ml. Rate constants were determined to be 1.2 x 1/1000 ml/mchr in oxygen and 0. 62 x 1/1000 ml/mc-hr in dry air. The reaction rate was found to be independent of oxygen ... |
|
Isotopes
