Elsevier

Nuclear Physics A

Volume 596, Issue 1, 1 January 1996, Pages 67-82
Nuclear Physics A

A new multistep direct reaction mechanism: Collective excitations in the continuum

https://doi.org/10.1016/0375-9474(95)00378-9Get rights and content

Abstract

We show that pre-equilibrium inelastic scattering reactions to the continuum contain substantial collective components in addition to the multistep direct and multistep compound reactions. These collective cross-sections are calculated using the experimental data for low-lying collective excitations supplemented where necessary by the giant multipole resonances evaluated using the energy-weighted sum rule. The MSC and MSD cross-sections are evaluated by the Feshbach-Kerman-Koonin theory using a consistent set of parameters determined by analyses of (p, n) reactions, that have practically no collective components. The results are compared with high-resolution neutron inelastic scattering data and prove able to account for the absolute magnitude of the cross-sections and also their detailed structure.

References (43)

  • H. Feshbach et al.

    Ann. of Phys.

    (1980)
  • R. Bonetti et al.

    Phys. Reports

    (1991)
  • R. Bonetti et al.

    Phys. Reports

    (1994)
  • F.C. Williams

    Nucl. Phys. A

    (1971)
  • A. Marcinkowski et al.

    Nucl. Phys. A

    (1993)
  • A. Marcinkowski et al.

    Nucl. Phys. A

    (1994)
  • G.A. Needham et al.

    Nucl. Phys. A

    (1982)
  • G.R. Satchler

    Nucl. Phys. A

    (1972)
  • H.B. Olaniyi, MSD code, University of Oxford (1993)...
  • P. Oblozinsky

    Nucl. Phys. A

    (1986)
  • W. Hauser et al.

    Phys. Rev.

    (1952)
  • S.F. Eccles et al.

    Phys. Rev.

    (1966)
  • Nuclear Data Sheets

    (1990)
  • Yan Yiming et al.

    Nucl. Phys. A

    (1982)
  • Y. Fujita et al.

    Phys. Lett. B

    (1981)
  • W.S. Gray et al.

    Phys. Rev.

    (1966)
  • H. Kalka et al.

    Phys. Rev. C

    (1989)
  • A. Takahashi et al.

    OKTAVIAN report A-92-01

    (1992)
  • A. Marcinkowski et al.

    J. Phys. G

    (1995)
  • A. Marcinkowski, B. Marianski, P. Demetriou and P.E. Hodgson. Phys. Rev. C (in...
  • S.M. Austin
  • Cited by (28)

    • Nuclear Data Sheets for A = 93

      2011, Nuclear Data Sheets
    • Multistep direct reactions at low energies

      2000, Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
    • Are low-energy direct reactions mainly onestep?

      1998, Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
    View all citing articles on Scopus
    1

    permanent address: Soltan Institute for Nuclear Studies, 00-681 Warsaw, Hoza 69, Poland.

    View full text