Published September 2, 2005 | Version v1
Journal article Metadata-only

Experimental Identification of Spin-Parities and Single-Particle Configurations in 257No and Its α-Decay Daughter 253Fm

Creators

  • 1. Advanced Science Research Center, Japan Atomic Energy Research Institute, Tokai, Ibaraki 319-1195 (Japan)
  • 2. Department of Radiologic Science and Engineering, The University of Tokushima, Tokushima 770-8509 (Japan)
  • 3. Department of Materials Science, Japan Atomic Energy Research Institute, Tokai, Ibaraki 319-1195 (Japan)
  • 4. Department of Chemistry, Tokyo Metropolitan University, Hachioji, Tokyo 192-0397 (Japan)
  • 5. Department of Chemistry, University of Tsukuba, Tsukuba, Ibaraki 305-8571 (Japan)
  • 6. Radioisotope Research Center, Nagoya University, Nagoya 464-8602 (Japan)

Description

α-γ and α-electron coincidence spectroscopy for a short-lived heavy actinide nucleus 257No (T1/2=24.5 s) has been performed using a gas-jet transport system and an on-line isotope separator. Spin-parities of excited states in 253Fm fed by the α decay of 257No have been identified on the basis of the measured internal conversion coefficients. The ν3/2+[622] configuration has been assigned to the ground state of 257No as well as to the 124.1 keV level in 253Fm. It was found that the ground-state configuration of 257No is different from that of lighter N=155 isotones

Additional details

Identifiers

DOI
10.1103/PhysRevLett.95.102502;

Publishing Information

Journal Title
Physical Review Letters
Journal Volume
95
Journal Issue
10
Journal Page Range
p. 102502-102502.4
ISSN
0031-9007
CODEN
PRLTAO

INIS

Country of Publication
United States
Country of Input or Organization
International Atomic Energy Agency (IAEA)
INIS RN
37015393
Subject category
S73: NUCLEAR PHYSICS AND RADIATION PHYSICS;
Descriptors DEI
ALPHA DECAY; ALPHA SPECTROSCOPY; DAUGHTER PRODUCTS; ELECTRON SPECTROSCOPY; EXCITED STATES; FERMIUM 253; GAMMA SPECTROSCOPY; GROUND STATES; INTERNAL CONVERSION; ISOTONIC NUCLEI; ISOTOPE SEPARATORS; KEV RANGE 100-1000; NOBELIUM 257; PARITY; SPIN
Descriptors DEC
ACTINIDE NUCLEI; ALPHA DECAY RADIOISOTOPES; ANGULAR MOMENTUM; BETA DECAY RADIOISOTOPES; CONVERSION; DAYS LIVING RADIOISOTOPES; DECAY; ELECTRON CAPTURE RADIOISOTOPES; ENERGY LEVELS; ENERGY RANGE; EQUIPMENT; EVEN-ODD NUCLEI; FERMIUM ISOTOPES; HEAVY NUCLEI; ISOTOPES; KEV RANGE; NOBELIUM ISOTOPES; NUCLEAR DECAY; NUCLEI; PARTICLE PROPERTIES; RADIOISOTOPES; SECONDS LIVING RADIOISOTOPES; SEPARATION EQUIPMENT; SPECTROSCOPY

Optional Information

Notes
(c) 2005 The American Physical Society