Elsevier

Nuclear Physics A

Volume 436, Issue 4, 15 April 1985, Pages 573-592
Nuclear Physics A

Meson exchange-current effects in heavy nuclei

https://doi.org/10.1016/0375-9474(85)90549-4Get rights and content

Abstract

Meson exchange-current effects in the electroexcitation of magnetic states are evaluated in 16O and 208Pb. A new method is suggested which properly includes the influence of the nuclear mean field on meson exchange-current effects. In addition, an effective meson exchange-current operator is developed which considerably simplifies the evaluation of meson exchange-current effects. Over a wide range of momentum transfers, the magnetic cross sections for the electroexcitation of high-spin, stretched 1p1h states are found to be smoothly enhanced by meson exchange currents.

References (36)

  • D.O. Riska et al.

    Phys. Lett.

    (1972)
  • E. Hadjimichael et al.

    Phys. Lett.

    (1972)
  • J. Hockert et al.

    Nucl. Phys.

    (1973)
  • F. Villars

    Helv. Phys. Acta

    (1948)
  • D.O. Riska

    Nucl. Phys.

    (1980)
  • M. Chemtob et al.

    Nucl. Phys.

    (1970)
  • J. Dubach et al.

    Nucl. Phys.

    (1976)
  • J. Dubach

    Nucl. Phys.

    (1980)
  • T. Suzuki et al.

    Z. Phys.

    (1979)
  • J.F. Mathiot et al.

    Phys. Lett.

    (1981)
    J.F. Mathiot
  • J.L. Friar

    Ann. of Phys.

    (1977)
  • G. Baym et al.

    Nucl. Phys.

    (1975)
  • S. Babu et al.

    Ann. of Phys.

    (1973)
  • S.-O. Bäckman et al.

    Nucl. Phys.

    (1979)
  • W.H. Dickhoff et al.

    Nucl. Phys.

    (1981)
  • J.M. Cavedon et al.

    Phys. Rev. Lett.

    (1982)
  • S. Krewald et al.

    Phys. Rev. Lett.

    (1980)
  • J.S. Dehesa et al.

    Phys. Rev.

    (1977)
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    The work of T.W.D. is supported in part through funds provided by the US DOE under contract no. DE-AC02-76ER03069.

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