Accession Number : AD0848909

Title :   Theoretical Study of Charge Exchange Cross Sections.

Descriptive Note : Technical rept., 16 Jun 67-20 Aug 68,

Corporate Author : GCA CORP BEDFORD MA GCA TECHNOLOGY DIV

Personal Author(s) : Dalgarno, A. ; Webb, T. G. ; Victor, G. A.

Report Date : JAN 1969

Pagination or Media Count : 132

Abstract : Charge exchange cross sections for fast heavy ions representative of several groups in the periodic table with atmospheric and other atoms have been calculated by using a quantal two-state one-electron method. The principal ions considered have been singly charged K, I, and Cr while target atoms and/or molecules have been N, O, Ar, Ne, H and He. Singly charged lithium, sodium, rubidium, and cesium have also been considered as projectiles in the target gases. Stripping cross sections for fast heavy ions incident on atmospheric and other atoms have been calculated by using an independent scattering model based on the Born approximation. The relationship between the quantal predictions and available experimental results is illustrated and certain improvements to the simple theory are discussed. A comparison is also made between the electron loss theory and available experimental results. Capture into excited states is discussed, and estimates are made of the appropriate cross sections. The rate of energy loss by heavy ions in air is discussed. (Author)

Descriptors :   (*ELECTRON CAPTURE, ATOMIC ORBITALS), (*ATOMIC CHARGE, INTERACTIONS), ATOMIC ORBITALS, IONS, AIR, SCATTERING, POTENTIAL ENERGY, WAVE FUNCTIONS, COMPUTER PROGRAMS, POTASSIUM, IODINE, CHROMIUM, NITROGEN, OXYGEN, ARGON, NEON, HYDROGEN, HELIUM, SODIUM, STRIPPED ATOMS.

Subject Categories : Nuclear Physics & Elementary Particle Physics

Distribution Statement : APPROVED FOR PUBLIC RELEASE