DRAMATIC CHANGES IN THE 3S AUTOIONIZATION PROCESS AT THE BEGINNING OFTHE AR-I SEQUENCE

Authors
VANKAMPEN P OSULLIVAN G IVANOV VK IPATOV AN COSTELLO JT KENNEDY ET
Citation
P. Vankampen et al., DRAMATIC CHANGES IN THE 3S AUTOIONIZATION PROCESS AT THE BEGINNING OFTHE AR-I SEQUENCE, Physical review letters, 78(16), 1997, pp. 3082-3085
Citations number
33
Categorie Soggetti
Physics
Journal title
Physical review letters → ACNP
ISSN journal
00319007
Volume
78
Issue
16
Year of publication
1997
Pages
3082 - 3085
Database
ISI
SICI code
0031-9007(1997)78:16<3082:DCIT3A>2.0.ZU;2-S
Abstract
The 3s --> np resonances were observed to change dramatically in appea rance with increasing ionization along the ArI sequence, and within th e 3s --> np channel of Ca2+. By applying the Dyson equation method to positive ions for the first time, newly investigated double-electron p rocesses were shown to play a crucial role in the interpretation of th e resonance structure. The changes within the resonances result from t heir position relative to the Cooper minima in the 3s and 3p photoabso rption.