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Zeitschrift für Physik A Atoms and Nuclei

, Volume 276, Issue 3, pp 295–302 | Cite as

Deformed states of high spin in42Ca

  • P. Betz
  • E. Bitterwolf
  • B. Busshardt
  • H. Röpke
Article

Abstract

The42Ca levels at 4,715 and 6,633 keV excitation energy have been investigated using the39K(α,pγ reaction atEα=14 and 15 MeV. From particle-γ-ray angular correlations the spin assignmentsJ(4,715)=6, 4 andJ(6,633)=8, 6, 4 have been obtained. Lifetime measurements using the Doppler-shift attenuation method yieldedτ (4,715)=120±46 fs andτ(6,633)=52±21 fs. Both levels have positive parity and decay by enhancedE2 transitions. They are interpreted as theJπ=6+ and 8+ members, respectively, of theKπ=0+ rotational band which has theE x =1,837, 2,423 and 3,250 keV states as further members. The enhancement of inbandE2 transitions is 50 −16 +35 W.u. (6→4) and 63 W.u. (8→6) respectively. The intrinsic quadrupole moments which have been derived on the basis of the coexistence model, areQ0=1.13−0.16/+0.37b(8→6) andQ0=1.36±0.25b(6→4), respectively. TheJπ=10+ member of the rotational band has possibly been observed as a level at 8,856±5 keV excitation energy.

Keywords

Attenuation Elementary Particle High Spin Quadrupole Moment Positive Parity 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Springer-Verlag 1976

Authors and Affiliations

  • P. Betz
    • 1
  • E. Bitterwolf
    • 1
  • B. Busshardt
    • 1
  • H. Röpke
    • 1
  1. 1.Fakultat für Physik der Universität FreiburgFreiburg/Brsg.W.-Germany

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