2019 Impact factor 2.176
Hadrons and Nuclei
Open Access
Eur. Phys. J. A 6, 481


First identification of excited states in the N = Z nucleus 70Br

C. Borcan1,2 - H. Schnare1 - R. Schwengner1 - L. Käubler1 - H.G. Ortlepp1 - F. Dönau1 - H. Grawe3 - M. Górska3 - S. Skoda4 - J. Eberth4 - T. Härtlein5 - F. Köck5 - D. Pansegrau5 - M. Moszynski6 - D. Wolski6 - M. Weiszflog7 - A. Axelsson7 - D.R. Napoli8 - A. Gadea8 - R. Wadsworth9 - A. Wilson9 - W. Andrejtscheff10

1 Institut für Kern- und Hadronenphysik, Forschungszentrum Rossendorf, 01314 Dresden, Germany
2 Horia Hulubei National Institute of Physics and Nuclear Engineering, Bucharest, P.O. Box MG-6, Romania
3 GSI Darmstadt, 64229 Darmstadt, Germany
4 Institut für Kernphysik der Universität zu Köln, 50937 Köln, Germany
5 Max-Planck-Institut für Kernphysik, 69029 Heidelberg, Germany
6 Soltan Institute for Nuclear Studies, Department of Nuclear Electronics, 05-400 Otwock-Swierk, Poland
7 The Svedberg Laboratory, P.O. Box 533, 75121 Uppsala, Sweden
8 INFN, Laboratori Nazionali di Legnaro, 35020 Legnaro, Italy
9 University of York, Physics Department, Heslington, York Y01 5DD, UK
10 Bulgarian Academy of Sciences, Institute of Nuclear Research and Nuclear Energy, 1784 Sofia, Bulgaria

Eur. Phys. J. A 5, 243-246 (1999)

After the publication of the short note with the above title we have learnt that the level scheme proposed for the nucleus 70Br is identical with the low-energy part of the level scheme of 193Tl [1] as presented in [2].

This nucleus could be populated in our experiment via the reaction 181Ta(16O,4n) in the beamstop made of tantalum.

The assignment of the $\gamma$ rays at 392, 406, 735, 751 and 754 keV to the nucleus 70Br was based on the analysis of ratios of $\gamma-\gamma$ intensities from exit channels with different neutron and proton multiplicities, which are presented in Figs. 2-4 of the short note. This analysis gave a consistent picture. The

critical point was that the assignments to 3n as well as 1p were extrapolations, since there were no known exit channels with 3n or 1pemission that could be used for comparison.

In conclusion, the level scheme presented in the short note displays excited states in 193Tl. The identification of excited states in 70Br remains an open problem.

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