Photodetachment cross sections for He/sup -/(/sup 4/P/sup 0/)

Journal Article · Tue Mar 31 23:00:00 EST 1981 · IEEE Trans. Nucl. Sci.; (United States)

DOI:https://doi.org/10.1109/TNS.1981.4331378· OSTI ID:6049579

Compton, R N; Alton, G D; Pegg, D J

We report the first measurements of photodetachment cross sections for He/sup -/ (formed through charge exchange of He/sup +/ with Ca vapor) over the photon energy range from 1.77 to 2.75 eV. The energies of autodetached electrons from the metastable He/sup -/ beam have also been determined for the first time. The autodetached electron energy agrees within experimental error (+-0.25 eV) with the known 1s2s2p)/sup 4/P/sup 0/ He/sup -/ energy level. This taken with measurements for the lifetime of He/sup -/ infers that charge exchange of He/sup +/ with Ca vapor produces /sup 4/P/sup 0/ He/sup -/.

• Research Organization: Oak Ridge National Lab., TN
• DOE Contract Number: W-7405-ENG-26
• OSTI ID: 6049579
• Journal Information: IEEE Trans. Nucl. Sci.; (United States), Journal Name: IEEE Trans. Nucl. Sci.; (United States) Vol. NS-28:2; ISSN IETNA
• Country of Publication: United States
• Language: English

Related Subjects

640304* -- Atomic
Molecular & Chemical Physics-- Collision Phenomena
74 ATOMIC AND MOLECULAR PHYSICS
ALKALINE EARTH METALS
ANIONS
CALCIUM
CHARGE-EXCHANGE REACTIONS
CHARGED PARTICLES
COLLISIONS
DATA
ELEMENTS
ENERGY LEVELS
ENERGY RANGE
EV RANGE
EV RANGE 01-10
EXPERIMENTAL DATA
FLUIDS
GASES
HELIUM IONS
INFORMATION
ION COLLISIONS
IONIZATION
IONS
LIFETIME
METALS
NUCLEAR REACTIONS
NUMERICAL DATA
PHOTON COLLISIONS
PHOTON-ION COLLISIONS
VAPORS