A recoil-beta tagging study of N=Z nucleus As-66

P. Ruotsalainen, C. Scholey, R. Wadsworth, D.G. Jenkins, B.S. Nara Singh, T.S. Brock, P.T. Greenlees, U. Jakobsson, P. Jones, R. Julin, S. Juutinen, S. Ketelhut, M. Leino, N.M. Lumley, P.J.R. Mason, P. Nieminen, M. Nyman, I. Paterson, P. Peura, M.G. ProcterP. Rahkila, J. Saren, J. Sorri, J. Uusitalo

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review


A Recoil‐Beta Tagging (RBT) experiment was recently performed at the accelerator laboratory at the University of Jyväskylä in order to identify T = 1 excited states in the medium‐heavy N = Z = 33 nucleus 66As. The fusion‐evaporation reaction 28Si(40Ca,pn)66As was employed at a beam energy of 75 MeV. The experiment was carried out utilising the JUROGAM II γ‐ray spectrometer in conjunction with the gas‐filled recoil separator RITU and the GREAT focal plane spectrometer system. The half‐lives and ordering of the two known isomeric states in 66As have been determined. In addition, several new prompt γ‐ray transitions from excited states both bypassing and decaying to the isomeric states in 66As have been observed.
Original languageEnglish
Title of host publicationFrontiers in Nuclear Structure, Astrophysics, and Reactions
Subtitle of host publicationFinustar 3
EditorsParaskevi Demetriou, Rauno Julin, Sotirios Harissopulos
PublisherAIP Publishing
Number of pages3
ISBN (Print)978-0-7354-0937-8
Publication statusPublished - 28 Oct 2011
Externally publishedYes

Publication series

NameAIP Conference Proceedings
PublisherAIP Publishing
ISSN (Print)0094-243X
ISSN (Electronic)1551-7616


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