Elsevier

Nuclear Physics A

Volume 339, Issue 2, 28 April 1980, Pages 262-276
Nuclear Physics A

Analyzing powers for the (p, α) reactions on 58, 60, 62Ni at Ep = 22 MeV

https://doi.org/10.1016/0375-9474(80)90092-5Get rights and content

Abstract

Measurements of both the analyzing power and cross section were made for the (p, α) reactions on 58,60,62Ni at an incident energy of 22 MeV. Data were taken for the strongly populated proton-hole states (0f72, 1s12 and 0d32) in the residual cobalt isotopes and for 8 weakly populated low-lying states in 55Co and 59Co. Angular distributions were taken between θlab = 10° and 140° for the ground state and θlab = 10° and 80° for the excited states. Both the cross sections and analyzing powers exhibit a similar angular distribution for states having the same Jπ values except in the transition to the 32 state in 59Co at 1.099 MeV. Using the observed J-dependence of the analyzing power, the unknown Jπ values for the states at 2.982 MeV in 55Co and 3.090 MeV in 59Co are assigned to be 92. The shapes of the differential cross sections were well reproduced by the zero-range DWBA calculations using a triton-cluster form factor. However, all the measured analyzing powers could not be reproduced within the framework of such a simple DWBA calculation.

References (21)

  • P.J. van Hall et al.

    Phys. Lett.

    (1978)
  • J.W. Smits et al.

    Nucl. Phys.

    (1979)
  • Y. Tagishi et al.

    Nucl. Instr.

    (1979)
  • H.J. Kim

    Nucl. Data Sheets

    (1976)
  • J.A. Nolen et al.

    Phys. Lett.

    (1966)
  • R. Nordhagen et al.

    Nucl. Phys.

    (1967)
  • D. Bucurescu et al.

    Nucl. Phys.

    (1972)
  • D.C. Kocher

    Nucl. Data Sheets

    (1976)
  • R.L. Auble

    Nucl. Data Sheets

    (1977)
  • W.R. Falk

    Clustering aspects of nuclear structure and nuclear reactions

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

Cited by (18)

  • Nuclear Data Sheets for A = 55

    2008, Nuclear Data Sheets
  • Nuclear data sheets for A = 59

    2002, Nuclear Data Sheets
  • Nuclear data sheets for A = 57

    1998, Nuclear Data Sheets
  • Nuclear data sheets update for A = 57

    1992, Nuclear Data Sheets
View all citing articles on Scopus

Present address: University of North Carolina, Chapel Hill, NC 27514, USA.

View full text