Short note
Gamma-spectroscopy of the 199At nucleus with the Recoil Filter Detector
W. Meczynski1 - P. Bednarczyk1 - R. Chapman2 - S. Courtin3 - J. Grebosz1 - F. Hannachi4 - P. Jones5 - J. Kownacki6 - M. Lach1 - A. Lopez-Martens3 - K.H. Maier7 - J.C. Merdinger3 - D. Middleton2 - M. Palacz6 - M.B. Smith2 - K.M. Spohr2 - N. Schulz3 - M. Zieblinski1 - J. Styczen1
1 The Niewodniczanski Institute of Nuclear Physics, Kraków, Poland
2 University of Paisley, Paisley, Scotland, U.K.
3 Institut de Recherches Subatomiques, Strasbourg, France
4 Centre de Spectrométrie Nucléaire et de Spectrométrie de Masse, Orsay, France
5 University of Jyväskylä, Jyväskylä, Finland
6 Heavy Ion Laboratory, University of Warsaw,Warszawa, Poland
7 Hahn-Meitner-Institut, Berlin, Germany
Received: 17 September 1998 / Revised version: 14 October 1998 Communicated by B. Herskind
Abstract
The neutron deficient 199At nucleus has been studied in the
175Lu+28Si reaction at 
MeV. In order to select events of interest in
the presence of the very strong background caused by fission, 
-rays have been detected
in coincidence with recoiling evaporation residues. The excited states of 199At observed
for the first time may indicate that this nucleus is deformed.
PACS
23.20.Lv Gamma transitions and level energies -
27.80.+w 
-
29.40.Ym Other detectors
×
Copyright Springer-Verlag
