Differential collision cross-sections for atomic oxygen

final technical progress report

• 365 Want to read
• 39 Currently reading

Published 1991 by National Aeronautics and Space Administration, National Technical Information Service, distributor in [Washington, DC, Springfield, Va .
Written in English

Subjects:

• Space vehicles -- Contamination.

---

Edition Notes

Statement	Dr. Douglas G. Torr, principal investigator.
Series	NASA contractor report -- NASA CR-187892.
Contributions	George C. Marshall Space Flight Center.
The Physical Object
Format	Microform
Pagination	1 v.
ID Numbers
Open Library	OL15387192M

---

  Included are the cross sections for total and elastic scatterings, momentum transfer, excitations of rotational, vibrational, and electronic states, dissociation, ionization, electron attachment, and emission of radiations. For each process, the recommended values of the cross sections are presented, when by: Triple differential cross sections (TDCS) are estimated for the ionization of metastable 3d-state hydrogen atoms by electron at eV for various kinematic conditions pursuing a multiple scattering theory. The present new results are compared with the theoretical results of hydrogenic different metastable states as well as the hydrogenic ground state experimental : Sushmita Banerjee, Sunil Dhar, Amanul Hoque.

Angular Differential and Total Cross Sections for the Excitation of Atomic Hydrogen to Its n=2 Level by kev Hydrogen Molecular Ions gen atom is the simplest atom-diatom collision system that one can investigate. However, there is little published extract differential cross sections. for. Total photoionization cross sections of atomic oxygen The differential pumping region, D, evac-uated by the turbomolecular pump, P^, separated the relatively high pres- the collision region in place of the oxygen and recording the ion count rate and photo-diode . We present state-to-state differential cross sections for collisions of NO molecules (X2Π1/2, j = 1/2f) with para-H2 and ortho-D2 molecules, at a collision energy of and cm–1, respectively. The angular scattering distributions for various final states of the NO radical are measured with high resolution using a crossed molecular beam apparatus that employs the combination of Stark Cited by: 4.

For reference, we show in Figure 1 various electron impact cross-sections of CO 2 as a function of electron energy, including the total collision cross-section (black), the elastic collision cross-section (green), and the cross-sections associated with the predissociation of electronically excited CO 2 (blue) and (red) that produce hot O atoms. A new technique, based on the use of a micro-channel plate position-sensitive detector, has been developed for studying some of these collision processes. Differential cross sections have been measured over a primary beam energy range of eV to eV for the scattering of atomic hydrogen, helium, and oxygen on targets of N(,2), O(,2), H(,2.   The Triple differential cross-sections (TDCS) is proportional to the quality measured of this kind of experiment. The (e, 2e) experiment on atomic hydrogen was firstly done at low incident energy. The first absolute Triple differential cross-sections (TDCS) for asymmetric geometries was established by Ehrhardt et : Tania Noor, Farhana Shirin Chowdhury.