New Data on Nuclear Subshells Obtained from the Analysis of the Information from the International Database on Nuclear Structure ENSDF

Journal Article · Fri Oct 01 04:00:00 EDT 2004 · Physics of Atomic Nuclei

DOI:https://doi.org/10.1134/1.1811189· OSTI ID:20692651

Boboshin, I N; Varlamov, V V ^[1]; Ishkhanov, B S ^[1]

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1. Institute of Nuclear Physics, Moscow State University, Moscow (Russian Federation)

In the last decade, a large amount of experimental nuclear spectroscopy data was obtained. This is good progress really, but a new very serious problem appears. Due to significant systematic errors of the data, one is often forced to deal with very discrepant data and often it is difficult to obtain reliable information from them. To solve this problem and to remove the systematic errors, new technologies in working with the data were developed. Using these new technologies, one can obtain information with a high accuracy and reliability, and in many cases, new information has not been or could not be obtained experimentally. Below, an approach of this kind is presented concerning spectroscopic data on Ca and Zr isotopes. It is shown that the behavior of the energy of the first 2{sup +} level in Zr isotopes can be explained in the framework of a shell-model approach. A separation of the 2d{sub 5/2} subshell in {sup 96}Zr (as is for the 1f{sub 7/2} subshell in {sup 48}Ca) is found, so that the neutron number N = 56 becomes like a magic number for Z 40. To explain a similarity in decaying properties of {sup 48}Ca and {sup 96}Zr, an additional interaction between closed structures consisting of 20 and 28 nucleons is proposed. Irregularities of the ground-state spin values in the K isotopic chain are explained in the framework of the shell-model approach by the inversion of the proton 1d{sub 3/2} and 2s{sub 1/2} orbitals.

• OSTI ID: 20692651
• Journal Information: Physics of Atomic Nuclei, Journal Name: Physics of Atomic Nuclei Journal Issue: 10 Vol. 67; ISSN 1063-7788; ISSN PANUEO
• Country of Publication: United States
• Language: English

Related Subjects

73 NUCLEAR PHYSICS AND RADIATION PHYSICS
CALCIUM 48
GROUND STATES
ISOTOPE SEPARATION
NEUTRONS
NUCLEAR DATA COLLECTIONS
NUCLEAR STRUCTURE
PROTONS
SHELL MODELS
SPECTROSCOPIC FACTORS
SPIN
ZIRCONIUM 96