Accession Number : AD0736446

Title :   Lyman-Alpha Emission Cross Sections for Collisions of 1-25 keV H+ and H with CO, CO2, CH4, and NH3.

Descriptive Note : Research rept. Jan-Jun 71,

Corporate Author : AEROSPACE CORP EL SEGUNDO CALIF LAB OPERATIONS

Personal Author(s) : Birely,John H. ; McNeal,Robert J.

Report Date : 01 FEB 1972

Pagination or Media Count : 30

Abstract : Cross sections are reported for emission of Lyman-alpha radiation in collisions of H(+) and H with CO and CO2 in the 1-25 keV energy range and with CH4 and NH3 in the range 5-25 keV. An electric field was applied within the collision chamber and the increase in Lyman-alpha intensity was used to drive cross sections for formation of H(2s). Relationships are presented between the projectile excitation cross section and the cross section for electron capture in H(+) impact or stripping in H impact which are relatively independent of the identity of the target molecule. (Author)

Descriptors :   (*PROTON BOMBARDMENT, EXCITATION), GAS IONIZATION, EMISSIVITY, METHANE, CARBON MONOXIDE, CARBON DIOXIDE, AMMONIA, ULTRAVIOLET RADIATION, DIFFERENTIAL CROSS SECTIONS, ATOMS

Subject Categories : Atomic and Molecular Physics and Spectroscopy

Distribution Statement : APPROVED FOR PUBLIC RELEASE