Empirical mass formula with proton-neutron interaction
An atomic mass formula consisting of a gross part, and averge even-odd part and an empirical shell part is studied. The gross part is, apart from a small atomic term, taken to be the sum of nucleon rest masses. Coulomb energies and a polynomial in A/sup 1/3/ and chemically bondN-Zchemically bond/A. The shell part includes, in addition to proton and neutron support of nuclear magicities and the cooperative deformation effect. After the first construction of such a formula, refinements have been made in two respects. One is a separate treatment of Z = N odd-odd nuclei suggested by a quartet model, and the other is an improvement of the proton neutron interaction term. By these refinements the root-mean-square deviation of calculated masses from the 1986 Audi-Wapstra masses has been reduced from 538 keV to 460 keV.
- Research Organization:
- Science and Engineering Research Laboratory, Waseda University, 3-4-1 Okubo, Shinjuku-ku, Tokyo 160, Japan
- OSTI ID:
- 5462321
- Report Number(s):
- CONF-870970-; TRN: 88-012628
- Journal Information:
- AIP Conf. Proc.; (United States), Vol. 164:1; Conference: 5. international conference on nuclei far from stability, Lake Rosseau, Canada, 14 Sep 1987
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
NUCLEI
MASS
MASS FORMULAE
COULOMB ENERGY
EXPERIMENTAL DATA
PROTON-NEUTRON INTERACTIONS
SHELL MODELS
THEORETICAL DATA
BARYON-BARYON INTERACTIONS
DATA
ENERGY
HADRON-HADRON INTERACTIONS
INFORMATION
INTERACTIONS
MATHEMATICAL MODELS
NUCLEAR MODELS
NUCLEON-NUCLEON INTERACTIONS
NUMERICAL DATA
PARTICLE INTERACTIONS
PROTON-NUCLEON INTERACTIONS
653001* - Nuclear Theory- Nuclear Structure
Moments
Spin
& Models