Accession Number : AD0639652

Title :   ELECTRON-MOLECULE COLLISION CROSS SECTIONS IN HELIUM AND ARGON MEASURED BY A TIME-OF-FLIGHT TECHNIQUE.

Corporate Author : GENERAL ELECTRIC CO SCHENECTADY N Y RESEARCH AND DEVELOPMENT CENTER

Personal Author(s) : Baldwin,G. C.

Report Date : AUG 1966

Pagination or Media Count : 6

Abstract : The total collision cross sections of helium and argon for electrons of very low energy have been measured by a new technique employing time-of-flight velocity selection. The present measurements extend below 200 mev; the ultimate limit of the technique is about one decade lower. Helium shows a 6 sq A cross section, decreasing monotonically below 400 mev with no structure. The argon cross section falls from 1.6 sq. A at 1 volt to a minimum of 0.4 sq. A at 300 mev, and then rises steeply. (Author)

Descriptors :   (*HELIUM, ELECTRON IRRADIATION), (*NEON, ELECTRON IRRADIATION), (*ELECTRON IRRADIATION, RARE GASES), PROBABILITY, TRANSPORT PROPERTIES, SPECTROSCOPY

Subject Categories : Atomic and Molecular Physics and Spectroscopy
      Nuclear Physics & Elementary Particle Physics

Distribution Statement : APPROVED FOR PUBLIC RELEASE