Auger transitions in noble gases following inner-shell ionization by electron bombardment and by synchrotron radiation

Thesis/Dissertation · Wed Jan 01 00:00:00 EST 1986

OSTI ID:7244291

Levin, J C

Precise measurements of krypton L-MM Auger spectra were obtained using electron excitation far above threshold. Comparison with theory (Chen, 1985) shows good agreement. The effects of final-state configuration interaction, ground-state correlation, and relaxation processes in which the core hole fluctuates to intermediate levels of the Coster-Kronig type are found to be significant. A previously reported discrepancy between an intermediate-coupling calculation and a measurement of the L/sub 2/-M/sub 2,3/M/sub 4,5/ spectrum (Aksela et al., 1980) is traced to a phase error in the calculation. In a related measurement, energies of several Coster-Kronig transitions are compared with an ab initio relativistic calculation (Chen, 1977) and with present LS-coupling results. The relatively large discrepancy can be attributed to the omission in the calculations of the electron electron Coulomb correlations mentioned above. In a second experiment, synchrotron radiation is used to create K vacancies in Ar, and L/sub 2/ and L/sub 3/ vacancies in Xe. The Ar K-L/sub 2/L/sub 3/, XeL/sub 2/L/sub 3/N/sub 4/ (J = 3) and XeL/sub 3/-M/sub 4/M/sub 5/ (/sup 1/Ga/sub 4/) transitions that fill these vacancies exhibit satellite structure and post-collision interaction. The Auger energy shift which results from PCI is the largest yet measured.

• Research Organization: Oregon Univ., Eugene (USA)
• OSTI ID: 7244291
• Resource Relation: Other Information: Thesis (Ph. D.)
• Country of Publication: United States
• Language: English

Related Subjects

74 ATOMIC AND MOLECULAR PHYSICS
ARGON
PHOTON COLLISIONS
ELECTRON COLLISIONS
AUGER EFFECT
COSTER-KRONIG TRANSITIONS
KRYPTON
XENON
EXPERIMENTAL DATA
INNER-SHELL IONIZATION
L-S COUPLING
SYNCHROTRON RADIATION
BREMSSTRAHLUNG
COLLISIONS
COUPLING
DATA
ELECTROMAGNETIC RADIATION
ELEMENTS
ENERGY-LEVEL TRANSITIONS
FLUIDS
GASES
INFORMATION
INTERMEDIATE COUPLING
IONIZATION
NONMETALS
NUMERICAL DATA
RADIATIONS
RARE GASES
640304* - Atomic
Molecular & Chemical Physics- Collision Phenomena