Even-parity quartet autodetaching states of He/sup -/

Conference · Wed Jul 15 04:00:00 EDT 1981

OSTI ID:5604167

Hazi, A U

The total photodetachment cross section of the metastable, (1s2s2p) /sup 4/P/sup 0/ state of He/sup -/ has been recently measured at several wavelengths between 10 ..mu.. and 308 nm. As part of these calculations, the even parity, quartet, autodetaching states of He/sup -/ which are optically connected to the metastable /sup 4/P/sup 0/ state and which are associated with the n = 2 and n = 3 states of He were studied. In both the photodetachment and electron scattering calculations, extensive configuration interaction (CI) wavefunctions were used to describe the He target states, the He/sup -/ resonance states and the photodetachment continua. The Stieltjes moment-theory technique was used to extract the partial photodetachment cross sections from the discrete representations of the electron scattering continua. The use of the Stieltjes technique allowed the inclusion of both channel-channel coupling and fully correlated He /sup 3/S and /sup 3/P/sup 0/ wavefunctions in the calculations. Results are presented and discussed. (WHK)

• Research Organization: Lawrence Livermore National Lab., CA (USA)
• DOE Contract Number: W-7405-ENG-48
• OSTI ID: 5604167
• Report Number(s): UCRL-86383; CONF-810785-1; ON: DE82005985
• Country of Publication: United States
• Language: English

Related Subjects

640304* -- Atomic
Molecular & Chemical Physics-- Collision Phenomena
74 ATOMIC AND MOLECULAR PHYSICS
AFFINITY
BINDING ENERGY
CHARGED PARTICLES
COLLISIONS
CROSS SECTIONS
ELECTRON DETACHMENT
ELECTRON SPECTRA
ENERGY
ENERGY LEVELS
EXCITED STATES
HELIUM IONS
ION COLLISIONS
IONS
METASTABLE STATES
PHOTON COLLISIONS
PHOTON-ION COLLISIONS
SPECTRA