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Lifetimes and side-feeding population of the yrast band levels in 131La

  • E. GrodnerEmail author
  • A. A. Pasternak
  • Ch. Droste
  • T. Morek
  • J. Srebrny
  • J. Kownacki
  • W. Płóciennik
  • A. A. Wasilewski
  • M. Kowalczyk
  • M. Kisieliński
  • R. Kaczarowski
  • E. Ruchowska
  • A. Kordyasz
  • M. Wolińska
Nuclear Structure and Reactions

Abstract.

Lifetimes of yrast levels with spins Iπ = 23/2--43/2- in 131La populated in the 122Sn(14N, 5n) reaction at a beam energy of 70MeV are measured by the Doppler Shift Attenuation method. A model of side-feeding population is presented. The model parameters are determined in an experiment based on the lineshape of γ-transitions from two highest spin levels and from the intensity distribution along the yrast band. The properties of the h11/2 band in 131La are compared with the theoretical predictions obtained in the framework of the Core-Quasi-Particle Coupling and the self-consistent Total Routhian Surface models.

PACS.

21.10.Tg Lifetimes 21.60.Ev Collective models 27.60.+j 90 ⩽ A ⩽ 149 

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Copyright information

© Società Italiana di Fisica and Springer-Verlag 2006

Authors and Affiliations

  • E. Grodner
    • 1
    Email author
  • A. A. Pasternak
    • 2
  • Ch. Droste
    • 1
  • T. Morek
    • 1
  • J. Srebrny
    • 1
  • J. Kownacki
    • 4
  • W. Płóciennik
    • 3
  • A. A. Wasilewski
    • 3
  • M. Kowalczyk
    • 1
    • 4
  • M. Kisieliński
    • 3
    • 4
  • R. Kaczarowski
    • 3
  • E. Ruchowska
    • 3
  • A. Kordyasz
    • 4
  • M. Wolińska
    • 4
  1. 1.Nuclear Physics DivisionWarsaw UniversityWarsawPoland
  2. 2.Cyclotron LaboratoryA.F. Ioffe Physical Technical InstituteSt.-PetersburgRussia
  3. 3.The A. Sołtan Institute for Nuclear StudiesŚwierkPoland
  4. 4.Heavy Ion LaboratoryWarsaw UniversityWarsawPoland

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