Study of low work function materials for hot cavity resonance ionization laser ion sources
2009 (English)In: Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms, ISSN 0168-583X, Vol. 267, no 10, 1856-1861 p.Article in journal (Refereed) Published
The selectivity of a hot cavity resonance ionization laser ion source (RILIS) is most often limited by contributions from competing surface ionization of the hot walls of the ionization cavity. In this article we present investigations on the properties of designated high temperature, low work function materials regarding their performance and suitability as cavity material for RILIS. Tungsten test cavities, impregnated with a mixture of barium oxide and strontium oxide (BaOSrO on W), or alternatively gadolinium hexaboride (GdB6) were studied in comparison to a standard tungsten RILIS cavity as being routinely used for hot cavity laser ionization at ISOLDE. Measurement campaigns took place at the off-line mass separators at ISOLDE/CERN, Geneva and RISIKO/University of Mainz.
Place, publisher, year, edition, pages
2009. Vol. 267, no 10, 1856-1861 p.
Laser ion source, Radioactive ion beams
IdentifiersURN: urn:nbn:se:kth:diva-32655DOI: 10.1016/j.nimb.2009.02.068ISI: 000266759900020ScopusID: 2-s2.0-65449152894OAI: oai:DiVA.org:kth-32655DiVA: diva2:411339
QC 201104182011-04-182011-04-182011-04-18Bibliographically approved