Abstract
The Barrett-Hewitt-McCarthy (BHM) method for calculating the nuclear reaction matrixG is used to compute shell-model matrix elements forA=18 nuclei. The energy denominators in intermediate states containing one unoccupied single-particle (s.p.) state and one valence s.p. state are treated correctly, in contrast to previous calculations. These corrections are not important for valence-shell matrix elements but are found to lead to relatively large changes in cross-shell matrix elements involved in core-polarization diagrams.
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Barrett, B.R., Hewitt, R.G.L., McCarthy, R.J.: Phys. Rev. C3, 1137 (1971)
Sandel, M.D., McCarthy, R.J., Barrett, B.R.: Bull. Am. Phys. Soc.21, 640 (1976) and to be published
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Work supported in part by the National Science Foundation (Grant No. MPS 75-07320)
We would like to thank Dr. Karen K. Warren for her assistance with the computer programming.
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Barrett, B.R., McCarthy, R.J. Nuclear reaction matrix calculations with a shell-modelQ . Z Physik A 279, 297–300 (1976). https://doi.org/10.1007/BF01408302
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DOI: https://doi.org/10.1007/BF01408302