Oscillator strength measurements of even-parity autoionizing resonances by combined synchrotron-radiation-laser excitation

Oscillator strengths (OS) have been measured for the first time for transitions involving even-parity autoionizing levels by a hybrid laser-synchrotron experiment, using synchrotron radiation from the Anneau de Collisions d'Orsay. As an illustration, OS measurements were made in sodium for tran...

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Bibliographic Details
Published in:Physical review letters 1985-09, Vol.55 (12), p.1281-1284
Main Authors: BIZAU, J. M, WUILLEUMIER, F, EDERER, D. L, KELLER, J. C, LEGOUET, J. L, PICQUE, J. L, CARRE, B, KOCH, P. M
Format: Article
Language:English
Subjects:
Atomic and molecular physics
Atomic properties and interactions with photons
Exact sciences and technology
Intensities and shapes of atomic spectral lines
Physics
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Summary:Oscillator strengths (OS) have been measured for the first time for transitions involving even-parity autoionizing levels by a hybrid laser-synchrotron experiment, using synchrotron radiation from the Anneau de Collisions d'Orsay. As an illustration, OS measurements were made in sodium for transitions between a laser-excited initial 2p(6)3p configuration and autoionizing levels of a 2p(5)3s3p final-state configuration. The sum of the OS for all the observed transitions between these states was found to be 0.22(4). It is noted that OS measurements for inner-shell transitions to autoionizing levels in sodium are of special interest because the quartet terms of the core-excited levels are metastable and are possible upper states for an extreme-UV laser.
ISSN:0031-9007
1079-7114
DOI:10.1103/physrevlett.55.1281