Revelation of Double Magicity in N = Z Nuclei in the RP-Process Region

Journal Article · Fri Apr 30 00:00:00 EDT 2010 · AIP Conference Proceedings

DOI:https://doi.org/10.1063/1.3431413· OSTI ID:21367165

Sharma, M M ^[1]; Sharma, J K ^[2]

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1. Physics Department, Kuwait University, Kuwait 13060 (Kuwait)
2. Physics Department, St. John's College, Agra-282002 (India)

In rapid-proton capture (rp-process), N = Z nuclei above Ni are understood to act as waiting-point nuclei. The N = Z nuclei {sup 68}Se, {sup 72}Kr, {sup 76}Sr and {sup 80}Zr among others are known to give rise to a large-energy x-ray flux and peaks in abundances of these nuclei synthesized in the astrophysical rp-process. Investigating the experimental isotope shifts in Kr isotopes near the proton drip-line within the framework of the deformed Relativistic Hartree-Bogoliubov theory, we have discovered that N = Z rp-process nuclei {sup 68}Se, {sup 72}Kr, {sup 76}Sr and {sup 80}Zr exhibit large shell gap both at the proton and neutron numbers in the deformed space with the consequence that pairing correlations for protons and neutrons vanish. This lends a doubly magic character to these nuclei. A significant number of nuclei in this region are also shown to exhibit neutron magicity at N = 34, 36, 38, and 40 in the deformed space. A unique case of concomitance of the double magicity and the shape-coexistence is found for {sup 68}Se.

• OSTI ID: 21367165
• Journal Information: AIP Conference Proceedings, Vol. 1224, Issue 1; Conference: International symposium on exotic nuclei, Sochi (Russian Federation), 28 Sep - 2 Oct 2009; Other Information: DOI: 10.1063/1.3431413; (c) 2010 American Institute of Physics; ISSN 0094-243X
• Country of Publication: United States
• Language: English

Related Subjects

73 NUCLEAR PHYSICS AND RADIATION PHYSICS
ASTROPHYSICS
BETA DECAY
CAPTURE
CORRELATIONS
HARTREE-FOCK-BOGOLYUBOV THEORY
KRYPTON 72
MAGIC NUCLEI
NEUTRONS
NUCLEAR STRUCTURE
PAIRING INTERACTIONS
PROTONS
R PROCESS
RELATIVISTIC RANGE
SELENIUM 68
SPECTRAL SHIFT
STRONTIUM 76
ZIRCONIUM 80
ALKALINE EARTH ISOTOPES
BARYONS
BETA DECAY RADIOISOTOPES
BETA-PLUS DECAY RADIOISOTOPES
DECAY
ELECTRON CAPTURE RADIOISOTOPES
ELEMENTARY PARTICLES
ENERGY RANGE
EVEN-EVEN NUCLEI
EVOLUTION
FERMIONS
HADRONS
INTERACTIONS
INTERMEDIATE MASS NUCLEI
ISOTOPES
KRYPTON ISOTOPES
MINUTES LIVING RADIOISOTOPES
NUCLEAR DECAY
NUCLEI
NUCLEONS
PHYSICS
RADIOISOTOPES
SECONDS LIVING RADIOISOTOPES
SELENIUM ISOTOPES
STAR EVOLUTION
STRONTIUM ISOTOPES
ZIRCONIUM ISOTOPES