Physics – Nuclear Physics – Nuclear Theory
Scientific paper
1994-06-07
Phys.Lett. B338 (1994) 421-425
Physics
Nuclear Physics
Nuclear Theory
12 pages (4 figs/on request) \#RU9445
Scientific paper
10.1016/0370-2693(94)90795-1
The magnetic dipole strength and energy-weighted strength distribution is calculated in $^8\mbox{Be}$, as well as the separate orbit and spin parts. All $\Delta N$=$2$ excitations over and above (and including) the configuration $0s^4$$0p^4$ are included. The interaction has a central, two-body spin-orbit and a tensor part. The energy- independent and energy-weighted {\underline orbital} strength distribution is remarkably insensitive to the presence or absence of the spin-orbit or tensor interaction -not so the spin strength. The energy-weighted strength distribution can be divided into a low enegy and a high energy part. The high energy orbital part is somewhat less but close to the low energy part, in fair agreement with a prediction that they be equal by de Guerra and Zamick and by Nojarov. There is a wide plateau separating the low energy part from the high energy part.
Fayache M. S.
Zamick Larry
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