2018 Impact factor 2.481
Hadrons and Nuclei


Eur. Phys. J. A 13, 435-448 (2002)
DOI: 10.1140/epja/iepja1221

Lifetimes in the ground-state band and the structure of $\chem{^{118}Te}$

A.A. Pasternak1, 2, J. Srebrny2, A.D. Efimov1, V.M. Mikhajlov3, E.O. Podsvirova1, Ch. Droste2, T. Morek2, S. Juutinen4, G.B. Hagemann5, M. Piiparinen4, S. Törmänen5 and A. Virtanen4

1  Cyclotron Laboratory, A.F. Ioffe Physical Technical Institute, 194021, St. Petersburg, Russia
2  Nuclear Physics Division, IEP, Warsaw University, Hoza 69, 00-681 Warsaw, Poland
3  Physical Institute of St. Petersburg State University, 198904, St. Petersburg, Russia
4  Department of Physics, University of Jyväskylä, P.O Box 35, FIN-40351, Jyväskylä, Finland
5  The Niels Bohr Institute, Blegdamsvej 17, DK-2100, Copenhagen, Denmark

(Received: 7 June 2001 / Revised version: 28 January 2002 Communicated by D. Schwalm)

Abstract
Lifetimes of excited states in 118Te have been measured using the Doppler Shift Attenuation (DSA) and Recoil Distance (RD) methods in the 109Ag( 13C, p3n) reaction at a beam energy of 54 MeV. Lifetime values of the ground-state band levels with spins $I^{\pi} = 2^+\mbox{--}16^+$ have been obtained. The excitation energies and B(E2) values are interpreted in the framework of a version of IBFM ( $\chem{IBM + 2qp}$) with the maximum boson number exceeding its standard value. A satisfactory agreement with experimental level scheme and B(E2) values for the ground-state band is achieved.

PACS
21.10.Tg - Lifetimes.
21.60.Fw - Models based on group theory.
23.20.Lv - Gamma transitions and level energies.
27.60.+j - $90\le A \le 149$ .

© Società Italiana di Fisica, Springer-Verlag 2002