Total electron-detachment cross sections for collisions of negative halogen ions and rare gases for energies around threshold

Journal Article · Fri Sep 01 04:00:00 EDT 1978 · Phys. Rev., A; (United States)

DOI:https://doi.org/10.1103/PhysRevA.18.945· OSTI ID:6682270

Smith, B T; Edwards, III, W R; Doverspike, L D; Champion, R L

The threshold behavior of the absolute total electron-detachment cross section for collisions of Cl/sup -/ and Br/sup -/ with rare gases has been determined in an ion-beam--gas-target apparatus. The relative collision energies investigated range from below the electron affinity of the halogen up to about 100 eV. For all of the reactants studied, the threshold for detachment is found to occur at about twice the electron affinity of the negative ion. The general features of measurements are in agreement with the ideas of a simple collision model. Upper limits to detachment-rate constants which are based upon the measurements are presented.

• Research Organization: Department of Physics, College of William and Mary, Williamsburg, Virginia 23185
• OSTI ID: 6682270
• Journal Information: Phys. Rev., A; (United States), Journal Name: Phys. Rev., A; (United States) Vol. 18:3; ISSN PLRAA
• Country of Publication: United States
• Language: English

Related Subjects

640304* -- Atomic
Molecular & Chemical Physics-- Collision Phenomena
74 ATOMIC AND MOLECULAR PHYSICS
ANIONS
ARGON
ATOM COLLISIONS
ATOMIC IONS
BROMINE IONS
CHARGED PARTICLES
CHLORINE IONS
COLLISIONS
CROSS SECTIONS
ELECTRON DETACHMENT
ELEMENTS
ION COLLISIONS
ION-ATOM COLLISIONS
IONS
KRYPTON
NEON
NONMETALS
RARE GASES
TOTAL CROSS SECTIONS
XENON