Ion Chemistry in the Spacecraft Environment. (9999)
Dressler, Rainer A., Murad, Edmond
The purpose of this of this chapter is to demonstrate how knowledge obtained from fundamental gas-phase ion chemical research is necessary to analyze the atmosphere in the low-Earth orbit environment...
Thiem, Terry L., Watson, Lyn R., Gardner, James A., Dressler, Rainer A., Salter, Richard H.
A fast pulsed beam of neutral metal atoms is produced by laser vaporization of a solid metal or metal compound sample in a modified high- temperature mass spectrometer. Atomic beams of several eV...
Watson, Lyn R., Thiem, Terry L., Dressler, Rainer A., Salter, Richard H., Murad, Edmond
The thermochemical properties of gas-phase transition metal monoxides are of interest in materials research, but are not well-known in some cases. We present in this report results from a study which...
Hyperthermal Reactions of O+(4S3/2) with CD4 and CH4: Theory and Experiment (2006)
Levandier, Dale J., Chiu, Yu-Hui, Dressler, Rainer A., Sun, Lipeng, Schatz, George C.
Theoretical and experimental methods are applied to the study of the reaction dynamics in hyperthermal collisions of 0+(4S3/2) with methane. Measurements of the absolute reaction cross sections for...
Mass Spectrometric Analysis of Colloid Thruster Ion Emission from Selected Propellants (2006)
Chiu, Yu-Hui, Austin, B. L., Dressler, Rainer A., Levandier, Dale J., Murray, P. T., Lozano, P., ...
Retarding potential, time-of-flight (TOF), and quadrupole mass spectrometric methods are applied to study the charged species emitted from a colloid thruster operated in a cone-jet mode at...
Guided-Ion Beam Measurements of the X(+) + Hsub2O(Dsub2O) (X = Ar, Nsub2) Collision Systems (2006)
Dressler, Rainer A., Salter, Richard H., Murad, Edmond
Guided-ion beam cross section and product kinetic energy measurements of charge-transfer and atom-abstraction reactions of the Ar(+) + Hsub2O(Dsub2O) and Nsub2(+) + Hsub2O(Dsub2O) collision systems...
Gardner, James A., Dressler, Rainer A., Salter, Richard H., Murad, Edmond
Chemiluminescence attributable to OH Alpha 2Sigma(+) yields Chi 2Pi emission is observed in hydrogen-atom transfer reactions of Nsub2(+) and Ar(+) with Hsub2O. High-resolution OH Alpha yields Chi...
Laboratory Study of Ion-Neutral Collisions at Suprathermal Energies. (1998)
Gardner, James A., Dressler, Rainer A., Salter, Richard H., Murad, Edmond
A double mass-spectrometer system for the study of the dynamics of ion-neutral collisions at suprathermal energies is described in detail. The system consists of a Wien Filter, which acts as a source...
Laboratory Study of the Thermochemical Properties of Materials Used in Spacecraft. (1998)
Thiem, Terry L., Watson, Lyn R., Dressler, Rainer A., Salter, Richard H., Murad, Edmond
A high temperature mass spectrometer used to obtain laboratory data on the thermochemical properties of materials encountered in space research is described in detail. The experimental procedures and...
Thiem, Terry L., Salter, Richard H., Watson, Lyn R., Murad, Edmond, Dressler, Rainer A.
A fast pulsed beam of neutral metal atoms is produced by laser vaporization of a solid metal compound sample in a modified high-temperature mass spectrometer. Atomic beams of several eV kinetic...
Reactivity of Highly Excited Diatomic Ions in Hypersonic Nonequilibrium Flow Conditions (1998)
Ng, Cheuk-Yiu, Dressler, Rainer A.
During this funding cycle, we have constructed and successfully integrated a state-of-the-art guided-ion beam mass spectrometer into the high-resolution photoion-photoelectron apparatus (Endstation...
Evaluation of DSMC Dissociation Models through Comparison to Measured Cross Sections (1998)
Wysong, Ingrid J., Dressler, Rainer A., Chiu, Y. H., Boyd, Iain D.
Recent measurements of collision-induced dissociation (CID) cross sections for Ar2(+)-Ar collisions for vibrationally cold and hot cases are utilized to test and compare several CID models that have...
Ng, Cheuk-Yiu, Dressler, Rainer A.
During the past funding cycle, we have constructed and successfully integrated a state-of-the-art guided-ion beam mass spectrometer into the high-resolution photoion-photoelectron apparatus...
Energy Partitioning in Hyperthermal O(+) + Hsub2O Charge-Transfer Collisions, (1994)
Dressler, Rainer A., Salter, Richard H., Murad, Edmond
The energy partitioning in hyperthermal O(+) + Hsub2O charge-transfer collisions is determined from the analysis of guided-ion beam time-of -flight measurements. The experimentally determined...
Gardner, James A., Dressler, Rainer A., Salter, Richard H., Murad, Edmond
Chemiluminescence attributable to OH Alpha 2Sigma(+) yields Chi 2Pi emission is observed in hydrogen-atom transfer reactions of Nsub2(+) and Ar(+) with Hsub2O. High-resolution OH Alpha yields Chi...
Reactions of Nsub2Hsub4 with O(+) and Other Ions at Suprathermal Energies, (1994)
Gardner, James A., Dressler, Rainer A., Salter, Richard H., Murad, Edmond
Reaction cross sections, product ion kinetic energies, and chemiluminescence have been measured for Nsub2Hsub4 collisions with O(+), Ar(+), Kr(+), CO(+), and COsub2(+) at collision energies ranging...
Guided-Ion Beam Measurements of N(+)+Hsub2O Charge-Transfer and Chemical Reaction Channels. (1994)
Dressler, Rainer A., Murad, Edmond
Guided-ion beam measurements of N(+) + Hsub2O charge-transfer and chemically reactive channels are presented for collision energies ranging from 0.1 eV to 20 eV c.m. The charge-transfer reaction is...
Guided-Ion Beam Measurements of X(+)+NO (X=Ar, Nsub2) Reactions. (1994)
Graul, Susan T., Williams, Skip, Dressler, Rainer A., Salter, Richard H., Murad, Edmond
Cross section and product ion time-of-flight measurements are presented for the X(+)+NO (X=Ar, Nsub2) collision systems over a collision energy range of 0.1-20 eV (c.m.). The experiments are carried...
Dressler, Rainer A., Gardner, James A., Salter, Richard H., Murad, Edmond
Luminescence measurements of the Ar (+) + H sub 2 O and N (+) sub 2 + H sub 2 O charge transfer systems are reported at collision energies ranging from 0.6 to 783 eV at a maximum resolution of 0.5 nm...