Total cross sections for double-electron detachment in intermediate energy H{sup {minus}}+ neon collisions

Journal Article · Sat May 01 04:00:00 EDT 1993 · Bulletin of the American Physical Society

OSTI ID:281412

Kvale, T J; Sen, A; Fang, X ^[1]

---

1. Univ. of Toledo, OH (United States); and others

Absolute total cross sections for the double electron detachment {sigma}{sub {minus}1,1} in collisions between H{sup {minus}} and Ne have been measured in the 5 - 50 keV energy range. A well-collimated H{sup {minus}} beam components of the collision products (i.e, H{sup O}, H{sup +} and H{sup {minus}}) are magnetically analyzed and directed into appropriately-biased Faraday cups for detection. The cross sections are determined by a quadratic least squares fit of the H{sup =} fraction as a function of the target thickness in the growth curve analysis of the data. The double-electron detachment cross sections increase monotonically with impact energy over the energy region covered in this experiment. The values of {sigma}{sub {minus}1,1} range from 1.02 x 10{sup {minus}17}cm{sup 2} at 5.0 keV to 5.54 x 10{sup {minus}17} cm{sup 2} at 50 keV.

• DOE Contract Number: FG05-88ER13971
• OSTI ID: 281412
• Report Number(s): CONF-9305421--
• Journal Information: Bulletin of the American Physical Society, Journal Name: Bulletin of the American Physical Society Journal Issue: 3 Vol. 38; ISSN 0003-0503; ISSN BAPSA6
• Country of Publication: United States
• Language: English

Related Subjects

66 PHYSICS
ELECTRON DETACHMENT
EXPERIMENTAL DATA
HYDROGEN IONS 1 MINUS
ION-ATOM COLLISIONS
NEON
TOTAL CROSS SECTIONS