Identification of autoionizing states of atomic chromium for resonance photo-ionization at the ISOLDE-RILIS
T Day Goodacre, K Chrysalidis, D Fedorovc, V N Fedosseev, B A Marsh, P, Molkanov, R E Rossel, S Rothe, C Seiffert
TL;DR
This paper identifies autoionizing states of atomic chromium to develop an efficient resonance photo-ionization scheme, expanding the capabilities of the ISOLDE-RILIS system at CERN for producing radioactive ion beams.
Contribution
It reports the discovery of 14 new autoionizing states of chromium and the development of an optimized three-step photo-ionization scheme for use in RILIS.
Findings
14 new autoionizing states of chromium identified
A new three-resonance ionization scheme developed
Enhanced ionization efficiency for chromium at ISOLDE-RILIS
Abstract
The resonance ionization laser ion source (RILIS) is the principal ion source of the ISOLDE radioactive beam facility based at CERN. Using the method of in-source resonance ionization spectroscopy, an optimal three-step, three-resonance photo-ionization scheme has been developed for chromium. The scheme uses an ionizing transition to one of the 14 newly observed autoionizing states. This work increases the range of ISOLDE-RILIS ionized beams to 32 chemical elements. Details of the spectroscopic studies are described and the new ionization scheme is summarized. A link to the complete version of this document will be added here following publication:
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Taxonomy
TopicsMass Spectrometry Techniques and Applications · X-ray Spectroscopy and Fluorescence Analysis · Nuclear Physics and Applications