Mass predictions in the infinite nuclear matter model
The authors present here the binding energies and mass excesses of 7208 nuclei in the ranges 4 {le} Z {le} 120 and 8 {le} A {le} 270. Relative to the 1986--1987 mass table, the present results are obtained with the recently improved infinite nuclear matter model which has the desirable features of natural decoupling of the infinite part from the finite part of the ground state energy, together with the cancellation of the exchange Coulomb, finite-size proton form factor, and Noeln-Schiffer anomaly terms. In addition, the authors have developed a new scheme of an interactive network covering the entire nuclear chart to obtain the local energy (comprising shell, deformation, etc.) of a nucleus in a consistent manner, using the technique of ensemble averaging of a large number of values predicted with the help of recursion relations derived in the model. This has widened the scope for predictions of masses of nuclei far into the drip-line regions of the nuclear chart. On the basis of systematics of the two-neutron separation energies, several new islands of stability in the exotic regions are predicted. This model has only five parameters representing the properties of infinite nuclear matter, the surface tension, and the Coulomb and pairing terms, which are determined once and for all in least-squares fits to known nuclear masses. The root-mean-square deviation of the fit to 1884 known masses is 401 keV, while the mean deviation is a remarkably low 9 keV, indicating the remnant systematic effects are vanishingly small.
- Research Organization:
- G.M. College, Sambalpur (IN)
- OSTI ID:
- 20020857
- Journal Information:
- Atomic Data and Nuclear Data Tables, Vol. 73, Issue 2; Other Information: PBD: Nov 1999; ISSN 0092-640X
- Country of Publication:
- United States
- Language:
- English
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