Empirical mass formula with proton-neutron interaction

Conference · Thu Dec 10 04:00:00 EST 1987 · AIP Conf. Proc.; (United States)

OSTI ID:5462321

Tachibana, T; Uno, M; Yamada, S; Yamada, M

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-
• Conference Information: Journal Name: AIP Conf. Proc.; (United States) Journal Volume: 164:1
• Country of Publication: United States
• Language: English

Related Subjects

653001* -- Nuclear Theory-- Nuclear Structure
Moments
Spin
& Models
73 NUCLEAR PHYSICS AND RADIATION PHYSICS
BARYON-BARYON INTERACTIONS
COULOMB ENERGY
DATA
ENERGY
EXPERIMENTAL DATA
HADRON-HADRON INTERACTIONS
INFORMATION
INTERACTIONS
MASS
MASS FORMULAE
MATHEMATICAL MODELS
NUCLEAR MODELS
NUCLEI
NUCLEON-NUCLEON INTERACTIONS
NUMERICAL DATA
PARTICLE INTERACTIONS
PROTON-NEUTRON INTERACTIONS
PROTON-NUCLEON INTERACTIONS
SHELL MODELS
THEORETICAL DATA