Actions for Inelastic electron scattering from Ca40 in the giant resonance region

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Inelastic electron scattering from Ca40 in the giant resonance region

Author
Weigert, L. J.
Published
United States : [publisher not identified], 1963.
[Oak Ridge, Tennessee] : [U.S. Atomic Energy Commission], 1963.
Physical Description
microfiche : negative ; 8 x 13 cm
Additional Creators
Eisenberg, J. M.

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Summary
Matrix elements for the excitation of particle-hole states in Ca40 by inelastic electron scattering are calculated. Electric dipole transitions to T = 1 states are considered, taking into account both transverse and Coulomb contributions. The particle-hole matrix elements are evaluated for a zero-range residual interaction. with the help of angular momentum identities, these matrix elements are expressed in a form involving only two Clebsch-Gordan coefficients, thus eliminating the usual 9-j symbols. Wave functions for the excited states are obtained from the diagonalization of the secular matrix. As functions of momentum transfer, some of the matrix elements for the electro-excitation of the different energy levels exhibit characteristically different behavior, thus helping to identify these levels in the extended shell model scheme. Varying the parameters at the residual interaction over a reasonable range brings about minor modifications in this behavior, but the qualitative results do not depend critically on the choice of these parameters. The sum of the contributions from the four energy levels above threshold, as a function of momentum transfer, proves to be extremely insensitive to changes in the parameters of the residual interaction, thus exhibiting the effects of closure (auth)
Report Numbers
CONF-481-41; AED-Conf-64-003-3
Other Subject(s)
Collection
U.S. Atomic Energy Commission depository collection.
Note
DOE contract number: AT(40-1)-2400
NSA number: NSA-18-022866
OSTI Identifier 4063217
Research organization: Univ. of Virginia, Charlottesville, VA (United States).
Funding Information
Sponsored by US Atomic Energy Commission (AEC).
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