Publications
Feasibility of photodetachment isobar suppression of WF5- with respect to HfF5-
- Author(s)
- T. Leopold, J. Rohlen, P. Andersson, C. Diehl, M. Eklund, O. Forstner, D. Hanstorp, H. Hultgren, P. Klason, A. O. Lindahl, K. Wendt
- Abstract
The feasibility of using laser photodetachment as a means for isobar
suppression in accelerator mass spectrometry has been investigated for
the special case of HfF5−/WF5−.
A method for absolute photodetachment cross section measurements was
applied and the cross sections of tungsten pentafluoride and hafnium
pentafluoride negative ions were measured. The measurements indicate
that the photodetachment cross section for WF5− is at least 100 times larger than for HfF5− at the wavelength of the fourth harmonic of the Nd:YAG laser at 266 nm. The absolute cross section for WF5− at this photon energy was found to be (2.8 ± 0.3) × 10−18 cm2, while an upper limit of 2 × 10−20 cm2 was obtained for the HfF5−
cross section. The measured cross sections indicate that an optical
filtering scheme for isobar suppression in accelerator mass spectrometry
for the case of Hf182 should be feasible.
- Organisation(s)
- Isotope Physics
- External organisation(s)
- Johannes Gutenberg-Universität Mainz, Albert-Ludwigs-Universität Freiburg, University of Gothenburg
- Journal
- International Journal of Mass Spectrometry
- Volume
- 359
- Pages
- 12-18
- No. of pages
- 7
- ISSN
- 1387-3806
- DOI
- https://doi.org/10.1016/j.ijms.2013.12.010
- Publication date
- 02-2014
- Peer reviewed
- Yes
- Austrian Fields of Science 2012
- 103014 Nuclear physics
- Keywords
- ASJC Scopus subject areas
- Condensed Matter Physics, Instrumentation, Spectroscopy, Physical and Theoretical Chemistry
- Portal url
- https://ucrisportal.univie.ac.at/en/publications/feasibility-of-photodetachment-isobar-suppression-of-wf5-with-respect-to-hff5(39363bbc-7ef3-42db-af2f-dc3972e4f0a7).html