Studies of autoionizing states relevant to dielectronic recombination. Progress report, 1 May 1983-1 January 1984 and work statement for the third year

Technical Report · Sun Jan 01 04:00:00 EST 1984

OSTI ID:5205610

Gallagher, T F

The goal of this research program is to reach a detailed understanding of dielectronic recombination by studying its inverse process, autoionization. Specifically, we are studying the autoionizing states of alkaline earth atoms by a multistep laser excitation technique that is precisely the inverse of dielectronic recombination. This is in sharp contrast to excitation of autoionizing states from the ground state. Using the multistep excitation technique, we have been measuring the atomic parameters relevant to dielectronic recombination. In particular, we are measuring autoionization rates as a function of principal and orbital angular momentum quantum number of the outer electron, the branching ratios for autoionization to specific final states of the ion and electron, and the effects of external electric fields on autoionization. Only by means of experiments such as these in which the parameters are measured individually can we confidently develop a theoretical model of dielectronic recombination with which to quantitatively understand processes occurring in fusion plasmas. 6 references, 2 figures.

• Research Organization: SRI International, Menlo Park, CA (USA)
• DOE Contract Number: AT03-79ER10376
• OSTI ID: 5205610
• Report Number(s): DOE/ER/10376-T3; ON: DE84008271
• Country of Publication: United States
• Language: English

Related Subjects

640302* -- Atomic
Molecular & Chemical Physics-- Atomic & Molecular Properties & Theory
74 ATOMIC AND MOLECULAR PHYSICS
ALKALINE EARTH METALS
AUTOIONIZATION
BARIUM
BRANCHING RATIO
COUPLING
ELEMENTS
ENERGY LEVELS
EXCITED STATES
INTERMEDIATE COUPLING
IONIZATION
L-S COUPLING
METALS
P STATES
RECOMBINATION
S STATES