2020 Impact factor 3.043
Hadrons and Nuclei
Eur. Phys. J. A 1, 117-118

Short note

Study of the first excited 1/2+ state in 131La

C. Foin - D. Barnéoud - J. Genevey - A. Gizon

Institut des Sciences Nucléaires, IN2P3-CNRS, Université Joseph Fourier, F-38026 Grenoble-Cedex, France

Received: 9 June 1997 / Revised version: 29 September 1997 Communicated by P. Armbruster

Low-spin states of 131La have been reinvestigated via the 115In + 20Ne reaction at 95 MeV with a pulsed beam and $\gamma$-ray spectroscopy. A doublet of excited states, 1/2+ at 230.3 keV and 7/2+ at 231.2 keV, has been definitely established in 131La. Low-spin state systematics in Z=57 and N=74 isotopes are presented and discussed.

23.20.Lv Gamma transitions and level energies - 27.60.+j $90 \le A \le 149$

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