Elsevier

Physics Letters B

Volume 178, Issue 4, 9 October 1986, Pages 339-342
Physics Letters B

Angular-momentum limitations in the high-spin gamma-decay of medium-mass evaporation residues

https://doi.org/10.1016/0370-2693(86)91390-0Get rights and content

Gamma-ray multiplicity measurements in coincidence with mass-separated evaporation residues are reported for the reaction 28Si+54Fe. The bombarding energy dependence [75 ⩽ El (28Si) ⩽ 145MeV] of the average gamma-ray multiplicity shows a saturation for the heaviest observed masses (80 and 79). Complementary information from partial-cross-section measurements, performed in the same energy range, is analyzed in the framework of the statistical model. A consistent description of both data sets suggests an enhanced alpha competition in the decay of the compound nucleus 28Zr. The use of deformation-dependent optical-model transmission coefficients in statistical-model calculations at very high angular momenta is considered.

References (18)

  • CormierT.M.

    Nucl. Instrum. Methods

    (1983)
  • Van der WerfS.Y.

    Nucl. Instrum. Methods

    (1978)
  • KovarD.G.

    Phys. Rev. C

    (1979)
  • PereyF.G.

    Phys. Rev.

    (1963)
  • DilgW.

    Nucl. Phys. A

    (1973)
  • SierkA.J.

    subroutine BARFIT, LANL

    (1984)
  • BlannM. et al.

    Phys. Scr.

    (1981)
  • HerskindB.
  • NewtonJ.O.

    Phys. Rev. Lett.

    (1977)
There are more references available in the full text version of this article.

Cited by (7)

  • Nuclear Data Sheets for A = 78

    2009, Nuclear Data Sheets
  • Nuclear data sheets for A = 80

    2005, Nuclear Data Sheets
  • Nuclear data sheets update for A = 76

    1995, Nuclear Data Sheets
  • Nuclear Data Sheets Update for A = 79

    1993, Nuclear Data Sheets
  • Nuclear data sheets update for A = 80

    1992, Nuclear Data Sheets
  • Nuclear data sheets update for A = 78

    1991, Nuclear Data Sheets
View all citing articles on Scopus
1

Present address: Department of Chemistry, Washington University, St. Louis, MO 63130, USA.

2

Supported by the National Science Foundation under grant PHY-8214295.

View full text