The production and destruction of negative ions
During the present grant period we are continuing our measurements of cross sections and asymmetry parameters for single photon-single electron detachment from atomic negative ions. In this period we have studied the stable ions B{sup {minus}} and Li{sup {minus}}. As a by product of these measurements we have investigated a new technique for measuring electron affinities. As in our previous work, we have made energy- and angle-resolved spectroscopic measurements of the yields and angular distributions of photoelectrons ejected at the intersection of perpendicularly crossed laser and negative ion beams. A combination of measurements of photoelectron yields, which are proportional to differential cross sections, and angular distributions allow us to determine angle-integrated cross sections for the photodetachment process. Cross sections for the inverse process of radiative attachment can be obtained from the photodetachment data by applying the principle of detailed balance.
- Research Organization:
- Tennessee Univ., Knoxville, TN (USA). Dept. of Physics
- Sponsoring Organization:
- DOE; USDOE, Washington, DC (USA)
- DOE Contract Number:
- FG05-85ER13456
- OSTI ID:
- 6100745
- Report Number(s):
- DOE/ER/13456-31; ON: DE91009517
- Country of Publication:
- United States
- Language:
- English
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The production and destruction of negative ions
The production and destruction of negative ions
Related Subjects
Molecular & Chemical Physics-- Atomic & Molecular Properties & Theory
74 ATOMIC AND MOLECULAR PHYSICS
AFFINITY
ANGULAR DISTRIBUTION
ANIONS
ASYMMETRY
BORON IONS
CHARGED PARTICLES
CROSS SECTIONS
DISTRIBUTION
DOCUMENT TYPES
ELECTROMAGNETIC RADIATION
ELECTRON DETACHMENT
EMISSION
ENERGY DEPENDENCE
IONS
LASER RADIATION
LITHIUM IONS
PHOTOEMISSION
PROGRESS REPORT
RADIATIONS
SECONDARY EMISSION