| Combustion Diagnostics for Understanding and Monitoring Chemical Weapons Incineration |
JUN 1998 |
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| Authors:
Terrill A. Cool; E. M. Fisher; F. C. Gouldin; Paul L. Houston; George J. Wolga; CORNELL UNIV ITHACA NY DEPT OF MECHANICAL AND AEROSPACE ENGINEERING
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 | Our objective has been to support the Army in its mission to dispose of its conventional chemical weapons and chemical warfare agents (CWA's) by conducting research into the chemistry of CWA incineration and by developing means for monitoring incineration processes. Laboratory studies of the destruction of chemical warfare agent simulants have been performed under air- starved pyrolysis conditions, rich and lean flame mode destruction conditions, and flame radical attack conditions. ... |
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| State Resolved Differential Cross Sections for Reactions Important to the Decomposition of Energetic Materials |
01 SEP 94 |
10 pages |
| Authors:
Paul L. Houston; CORNELL UNIV ITHACA NY DEPT OF CHEMISTRY
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 | This final report describes the research whose goal was to develop a new technique for characterizing the velocity distributions of state-selected reaction products and to use this technique to study reactions of importance to the decomposition of energetic materials. In this technique, the three- dimensional product velocity distribution is determined by ionizing the appropriate species, waiting for a delay while the species separate along their trajectories, and then projecting the ... |
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| Vacuum Ultraviolet Studies of Molecular Dynamics |
08 APR 94 |
7 pages |
| Authors:
Paul L. Houston; CORNELL UNIV ITHACA NY DEPT OF CHEMISTRY
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| Tunable vacuum ultraviolet radiation generated by four-wave mixing will be used to probe collisional energy transfer and photodissociation. Collisional relaxation of the S((1)D) velocity distribution by rare gases has been measured to learn to what extent this simple process can be described by a hard-sphere, elastic interaction. E yielding V transfer was studied from S((1)D) to CO and N2, both by examining the Doppler profile of the relaxed atoms and ... |
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| Vacuum Ultraviolet Studies of Molecular Dynamics |
15 JAN 92 |
9 pages |
| Authors:
Paul L. Houston; CORNELL UNIV ITHACA NY DEPT OF CHEMISTRY
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| This research grant used tunable vacuum ultraviolet radiation generated by four-wave mixing to probe collisional energy transfer, reactive encounters, and photodissociations. Translation-to-vibration/rotation energy transfer was examined in the H + CO system to learn how the extent of transfer depends on the collision energy and to determine the vibrational and rotational distribution of the product. The quenching of S(1D) by N2 was studied to learn the branching ratio for quenching ... |
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| Reactions of Hydrogen Atoms Important to the Decomposition of Energetic Materials |
09 MAY 91 |
15 pages |
| Authors:
Paul L. Houston; CORNELL UNIV ITHACA NY DEPT OF CHEMISTRY
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| A new technique for characterizing the velocity distributions of state-selected reaction products was developed for analyzing the reactions of hydrogen atoms: the three dimensional velocity distribution of product fragments is determined by ionizing the appropriate species, waiting for a delay while the species separate along their trajectories, and then projecting the spatial distribution of ions onto a two-dimensional screen. The objectives of this work were to develop the new technique ... |
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| Molecular Dynamics in the Vacuum Ultraviolet |
30 JAN 89 |
8 pages |
| Authors:
Paul L. Houston; CORNELL UNIV ITHACA NY DEPT OF CHEMISTRY
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| The photodissociation of OCS at 222-nm has been examined by using tunable vacuum ultraviolet laser radiation to probe the Carbon monoxide and Sulfur products. Products of both the monomer and polymer dissociation have been identified and characterized, with particular emphasis on vector correlations. The vacuum ultraviolet radiation used to probe the CO and S products is generated by four-wave mixing in magnesium vapor. The photodissociation of OCS at 157 nm ... |
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| Vibrational Deactivation at Solid Surfaces |
12 MAR 87 |
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| Authors:
Paul L. Houston; Robert P. Merrill; CORNELL UNIV ITHACA NY
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| The loss of vibrational energy was monitored by observing the decay of infrared fluorescence following pulsed excitation with a tunable infrared laser of molecules contained within a metallic or non-metallic cylindrical cell. The probability of collisional deactivation was obtain by measuring the decay time for the infrared fluorescence and dividing by the number of collisions per unit time calculated from gas-kinetic theory. The exchange of translational and rotational energy was ... |
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| Laser Studies of Halogens and Oxygen |
01 JAN 86 |
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| Authors:
Paul L. Houston; CORNELL UNIV ITHACA NY DEPT OF CHEMISTRY
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| Interconversions of energy between the metastable species of halogens, interhalogens, and oxygen are important to the determination of the mechanisms for the chemical oxygen/iodine and IF lasers and to the development of a better fundamental understanding of electronic energy transfer. Previous research by our group in this broad area has investigated the kinetics of the equilibrium I* + O2 = I + O2(1 Delta), has measured electronic-to-vibrational energy transfer from ... |
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| Interactions of Vibrationally Excited Molecules with Solid Surfaces |
09 SEP 1983 |
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| Authors:
Paul L. Houston; R. P. Merrill; CORNELL UNIV ITHACA NY
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| The interaction of gas-phase molecules with solid surfaces is of importance to heterogeneous catalysis, corrosion, air filtration, pollution control, and chemical deactivation. Our research group has recently obtained some of the first direct measurements of the probability for vibrational deactivation during gas-solid collisions. A pulsed infrared laser is used to excite CO of CO2 vibrationally under conditions where the predominant cause of deactivation is due to the gas-surface collision. The ... |
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| Energy Disposal in Electronically Excited Halogens and Oxygen |
31 OCT 1982 |
8 pages |
| Authors:
Paul L. Houston; CORNELL UNIV ITHACA NY DEPT OF CHEMISTRY
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| Collisional quenching of electronically excited iodine atoms by molecular oxygen has been investigated. The primary mechanism of the I(2P1/2) deactivation is shown to be an electronic-to-electronic energy transfer process between the iodine and oxygen, creating electronically excited 02 (1 delta g). In another experiment the total rate of deactivation of 02(1 sigma) by C02 was found to be 5.0 x 10 to the minus 13th power cc3/molecule delta. Electronic-to- vibrational ... |
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