Observation of Electric Monopole Strength in the Electrodisintegration of He3

P. T. Kan, G. A. Peterson, D. V. Webb, Z. M. Szalata, S. P. Fivozinsky, J. W. Lightbody, Jr., and S. Penner
Phys. Rev. Lett. 34, 899 – Published 7 April 1975
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Abstract

A broad electric monopole excitation peaking at 6.4 MeV has been observed in the breakup of He3 induced by inelastic electron scattering. The monopole cross section was obtained from the observed cross section by subtracting the electric-dipole contributions converted from photodisintegration cross sections by using the virtual photon theory, and also subtracting the magnetic multipole contributions obtained from a 180° electron-scattering experiment. The extracted monopole matrix element is 2.4±0.5 fm2.

  • Received 27 January 1975

DOI:https://doi.org/10.1103/PhysRevLett.34.899

©1975 American Physical Society

Authors & Affiliations

P. T. Kan, G. A. Peterson, D. V. Webb, and Z. M. Szalata*

  • Department of Physics and Astronomy, University of Massachusetts, Amherst, Massachusetts 01002

S. P. Fivozinsky, J. W. Lightbody, Jr., and S. Penner

  • Center for Radiation Research, National Bureau of Standards, Washington, D. C. 20234

  • *Work supported in part by the Office of Naval Research and by the National Science Foundation.

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Vol. 34, Iss. 14 — 7 April 1975

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