Accession Number : AD0720882

Title :   A Coincidence Study of Atomic Collisions.

Descriptive Note : Final rept. 1 May 68-31 Jan 71,

Corporate Author : CONNECTICUT UNIV STORRS DEPT OF PHYSICS

Personal Author(s) : Hayden,Howard C.

Report Date : 31 JAN 1971

Pagination or Media Count : 12

Abstract : The work concerned atomic collisions of the type X(+) + Y yields X(+m) = Y(+n) + (m+n-1)e at keV energies (T(o)) and large scattering angles. Of interest are the inelastic energy (Q) distributions, and average ionization probabilities P(mn) for the many combinations for the collision partners investigated. The systems studied were the Ar(+)- Ar, Ne(+,++,o)- Ne, N(+)- Ar, and Ar(+)- Kr cases. The neon case was studied at 200 keV to test Lichten's prediction that the fast electron ejection intensities should be in the ratio of 0:1:2 for incident neutrals, singly charged ions and doubly charged ions respectively. The Ar(+)- Ar case was recently studied to show that the inner shell vacancy leading to Auger electron emissions can be caused by promotion of an electron to a bound state of the ion. The N(+)- Ar and Ar(+)- Kr cases were studied in great detail in order to see if one could, for example, predict Ar(+)- Kr result on the basis of previous Ar(+)- Kr and Kr(+)- Kr data. A statistical model similar to that of Everhart and Kessel has been developed for these cases. (Author)

Descriptors :   (*ATOMS, INTERACTIONS), (*GAS IONIZATION, ATOMS), SCATTERING, IONS, NITROGEN, ARGON, KRYPTON

Subject Categories : Atomic and Molecular Physics and Spectroscopy

Distribution Statement : APPROVED FOR PUBLIC RELEASE