Photodetachment cross sections for He/sup -/ /sup 4/P

Journal Article · Thu Jan 01 04:00:00 EST 1981 · Phys. Rev., A; (United States)

DOI:https://doi.org/10.1103/PhysRevA.23.59· OSTI ID:6733571

Hodges, R V; Coggiola, M J; Peterson, J R

Absolute photodetachment cross sections for He/sup -/ /sup 4/P/sup o/ have been obtained at discrete photon energies between 0.12 and 4.0 eV by normalizing the He photodetachment products from a 1.3-keV He/sup -/ beam to those from autodetachment over a known path length, and making use of the known metastable lifetimes. The cross section reaches 1.2 x 10/sup -16/ cm/sup 2/ at 0.12 eV (40 meV above threshold), falls to 1 x 10/sup -17/ cm/sup 2/ at 4.0 eV, and exhibits several distinct features associated with excited He product states.

• Research Organization: Molecular Physics Laboratory, SRI International, Menlo Park, California 94025
• OSTI ID: 6733571
• Journal Information: Phys. Rev., A; (United States), Journal Name: Phys. Rev., A; (United States) Vol. 23:1; ISSN PLRAA
• Country of Publication: United States
• Language: English

Related Subjects

640302* -- Atomic
Molecular & Chemical Physics-- Atomic & Molecular Properties & Theory
74 ATOMIC AND MOLECULAR PHYSICS
ANIONS
BEAMS
CHARGED PARTICLES
COLLISIONS
CROSS SECTIONS
ELECTRON DETACHMENT
ENERGY LEVELS
ENERGY RANGE
EV RANGE
EV RANGE 01-10
EXCITED STATES
HELIUM IONS
ION BEAMS
ION COLLISIONS
IONS
METASTABLE STATES
P STATES
PHOTON COLLISIONS
PHOTON-ION COLLISIONS