Response of the /sup 1/P/sup 0/ resonance near n = 3 in the H/sup -/ continuum to external electric fields

Technical Report · Thu May 01 04:00:00 EDT 1986

DOI:https://doi.org/10.2172/5842274· OSTI ID:5842274

Cohen, S

The response to external electric fields of the /sup 1/P/sup 0/ resonance in the H/sup -/ photodetachment continuum below the n = 3 hydrogenic excitation threshold is investigated. Using the relativistic (..beta.. = 0.806) 650 MeV H/sup -/ beam at the Clinton P. Anderson Meson Physics Facility (LAMPF) in Los Alamos, the fourth harmonic (2.66 nm) of a Nd:YAG laser is Doppler shifted to provide a continuously tunable photon beam in the rest frame of the ions. The magnetic field from pulsed Helmholtz coils, surrounding the photon-H/sup -/ interaction point provides a Lorentz-transformed barycentric electric field. Relative total photodetachment cross sections were measured as a function of photon energy and electric field. The resulting spectra were fit to a Fano line shape. 70 refs., 28 figs., 7 tabs.

• Research Organization: Los Alamos National Lab., NM (USA)
• DOE Contract Number: W-7405-ENG-36
• OSTI ID: 5842274
• Report Number(s): LA-10726-T; ON: DE86011739
• Country of Publication: United States
• Language: English

Related Subjects

640302* -- Atomic
Molecular & Chemical Physics-- Atomic & Molecular Properties & Theory
74 ATOMIC AND MOLECULAR PHYSICS
C CODES
CHARGED PARTICLES
COMPUTER CODES
DATA ACQUISITION SYSTEMS
DATA ANALYSIS
ELECTRIC FIELDS
ELECTROMAGNETIC RADIATION
HYDROGEN IONS
IONS
LASER SPECTROSCOPY
RADIATIONS
RESONANCE
S CODES
SPECTROSCOPY
ULTRAVIOLET RADIATION