Published August 25, 2006 | Version v1
Journal article Metadata-only

K Isomers in 254No: Probing Single-Particle Energies and Pairing Strengths in the Heaviest Nuclei

Creators

  • 1. Department of Physics, University of Massachusetts Lowell, Lowell, Massachusetts 01854 (United States)
  • 2. Argonne National Laboratory, Argonne, Illinois 60439 (United States)
  • 3. University of Maryland, College Park, Maryland 20742 (United States)

Description

We have identified two isomers in 254No, built on two- and four-quasiparticle excitations, with quantum numbers Kπ=8- and (14+), as well as a low-energy 2-quasiparticle Kπ=3+ state. The occurrence of isomers establishes that K is a good quantum number and therefore that the nucleus has an axial prolate shape. The 2-quasiparticle states probe the energies of the proton levels that govern the stability of superheavy nuclei, test 2-quasiparticle energies from theory, and thereby check their predictions of magic gaps

Additional details

Identifiers

DOI
10.1103/PhysRevLett.97.082502;

Publishing Information

Journal Title
Physical Review Letters
Journal Volume
97
Journal Issue
8
Journal Page Range
p. 082502-082502.4
ISSN
0031-9007
CODEN
PRLTAO

INIS

Country of Publication
United States
Country of Input or Organization
International Atomic Energy Agency (IAEA)
INIS RN
38023677
Subject category
S73: NUCLEAR PHYSICS AND RADIATION PHYSICS;
Descriptors DEI
EXCITATION; ISOMERS; NOBELIUM 254; PROTONS; QUANTUM NUMBERS; STABILITY
Descriptors DEC
ACTINIDE NUCLEI; ALPHA DECAY RADIOISOTOPES; BARYONS; BETA DECAY RADIOISOTOPES; ELECTRON CAPTURE RADIOISOTOPES; ELEMENTARY PARTICLES; ENERGY-LEVEL TRANSITIONS; EVEN-EVEN NUCLEI; FERMIONS; HADRONS; HEAVY NUCLEI; ISOMERIC TRANSITION ISOTOPES; ISOTOPES; MILLISECONDS LIVING RADIOISOTOPES; NOBELIUM ISOTOPES; NUCLEI; NUCLEONS; RADIOISOTOPES; SECONDS LIVING RADIOISOTOPES; SPONTANEOUS FISSION RADIOISOTOPES

Optional Information

Notes
(c) 2006 The American Physical Society