| Charge-changing Reactions and Their Influence on the Ion Motion in a Penning Trap |
24 JUN 2002 |
6 pages |
| Authors:
A. Herlert; L. Schweikhard; M. Vogel; MAINZ UNIV (GERMANY F R)
|
 | Charge-changing reactions can lead to a significant change of the ion motion which may result in the loss of the ions from the trap. For the present experiments singly charged gold clusters from an external laser vaporization source have been transferred into a Penning trap and transformed into dianions by use of an electron bath of simultaneously stored electrons. The dianions have been investigated by collisional activation and laser excitation ... |
|
| Spectral Holes Under Pressure: Proteins and Glasses, |
22 MAY 1992 |
|
| Authors:
J. Zollfrank; J. Friedrich; MAINZ UNIV (GERMANY F R)
|
 | Pressure tuning of spectral holes provides, in a way, a link between gas phase and solid state spectroscopy. Generally speaking, the shift of a spectral hole under isotropic pressure conditions, allows for a determination of three system parameters. These are: the vacuum frequency v sub vac of the molecular probe, the solvent shift v sub s with the probe experiences when embedded into a lattice and the compressibility k of ... |
|
| Antihole Formation in Intramolecular Rotational Tunnel Systems, |
22 MAY 1992 |
|
| Authors:
G. Gradl; A. Feis; J. Friedrich; MAINZ UNIV (GERMANY F R)
|
| Hole burning in mixed crystals containing methyl groups can be used to determine the difference of the rotational tunnel splitting of the methyl groups in the ground and excited electronic state of the guest probe. Two mechanisms were suggested: If the photo-transformation of the probe is photochemical in nature, the difference in tunnel splitting shows up in the side hole pattern which appears upon thermal relaxation of the bleached ground ... |
|
| Hole Burning in Long Chain Molecular Aggregates, |
22 MAY 1992 |
|
| Authors:
R. Hirschmann; J. Friedrich; MAINZ UNIV (GERMANY F R)
|
| The salts of pseudoisocyanine (PIC) have very specific optical properties. Under certain conditions (concentration, temperature) the PIC-molecules form linear aggregates in solution. Since the coupling between the molecules comprising the aggregate is very strong, the excited states are delocalized over a large range. A coherence length on the order of 1000 A is not uncommon. These excitonic states carry momentum and, hence, the physics of these systems shows novel phenomena ... |
|
| Solid Phase Synthesis on Polymeric Support with Allylic Anchoring Groups, |
1992 |
|
| Authors:
H. Kunz; W. Kosch; J. Maerz; MAINZ UNIV (GERMANY F R)
|
|
| New Enzymatic Protecting Group Techniques for the Construction of Peptides and Glycopeptides, |
1992 |
|
| Authors:
P. Braun; H. Kunz; H. Waldmann; MAINZ UNIV (GERMANY F R)
|
|
| The 3-(3-Pyridyl)Allyloxycarbonyl Group: A New Protecting Group for Peptide Synthesis Even in Water, |
1992 |
|
| Authors:
Karsten Von Dem Bruch; Horst Kunz; MAINZ UNIV (GERMANY F R)
|
|
| Enzymatic Glycosylation of O-Glycopeptides, |
1992 |
|
| Authors:
Michael Schultz; Horst Kunz; MAINZ UNIV (GERMANY F R)
|
|
| Microwave Radiation and Thermoregulation |
MAY 85 |
|
| Authors:
E. R. Adair; MAINZ UNIV (GERMANY F R)
|
| Adult male squirrel monkeys were equilibrated to one of three ambient temperatures (Ta-20, 26 and 32 C) and then re-equilibrated for a 90-min period in the presence of a 2450-MHz CW microwave field. Power densities of 10, 15, 20, and 25 mW/sq cm were explored (SAR=1.5, 2.25, 3.0, and 3.75 W/kg, respectively) at each T sub a=32 C. In accordance with the method of partitional calorimetry, the following autonomic responses ... |
|
| THE MODIFICATION OF AEROSOL SIZE DISTRIBUTION IN THE ATMOSPHERE. |
30 JUN 1964 |
|
| Authors:
Christian Junge; MAINZ UNIV (GERMANY F R)
|
| A comprehensive quantitative study is made of the various processes in the atmosphere which are known to have an effect on the size distribution of natural aerosols. One of the most important processes is the coagulation of aerosol particles by Brownian motion which is always in operation inside and outside of clouds. Smoluchowski's expression for this process is evaluated for various model distributions of atmospheric aerosols. In this study a ... |
|
Reports by Corporate Author
