Published April 4, 2008
| Version v1
Journal article
Discovery of a Nuclear Isomer in 65Fe with Penning Trap Mass Spectrometry
Creators
- 1. National Superconducting Cyclotron Laboratory (NSCL), Michigan State University, East Lansing, Michigan (United States)
Description
A new long-lived isomeric state in 65Fe has been discovered with Penning trap mass spectrometry and high-precision mass measurements of the neutron-rich isotopes 63-65Fe and 64-66Co have been performed with the Low-Energy Beam and Ion Trap Facility at the NSCL. For the new isomer in 65Fe an excitation energy of 402(5) keV has been determined from the measured mass difference between the isomeric and ground states. The mass uncertainties of all isotopes have been reduced by a factor of 10-100 compared to previous results. In the case of 64Co the previous mass value was found to deviate by about 5 standard deviations from the new measurement
Additional details
Identifiers
Publishing Information
- Journal Title
- Physical Review Letters
- Journal Volume
- 100
- Journal Issue
- 13
- Journal Page Range
- p. 132501-132501.4
- ISSN
- 0031-9007
- CODEN
- PRLTAO
INIS
- Country of Publication
- United States
- Country of Input or Organization
- International Atomic Energy Agency (IAEA)
- INIS RN
- 40006512
- Subject category
- S73: NUCLEAR PHYSICS AND RADIATION PHYSICS;
- Descriptors DEI
- COBALT 64; COBALT 65; COBALT 66; EXCITATION; GROUND STATES; IRON 63; IRON 64; IRON 65; ISOMERS; KEV RANGE 100-1000; MASS; MASS DIFFERENCE; MASS SPECTROSCOPY; NEUTRON-RICH ISOTOPES; TRAPS
- Descriptors DEC
- BETA DECAY RADIOISOTOPES; BETA-MINUS DECAY RADIOISOTOPES; COBALT ISOTOPES; ENERGY LEVELS; ENERGY RANGE; ENERGY-LEVEL TRANSITIONS; EVEN-EVEN NUCLEI; EVEN-ODD NUCLEI; INTERMEDIATE MASS NUCLEI; IRON ISOTOPES; ISOTOPES; KEV RANGE; MILLISECONDS LIVING RADIOISOTOPES; NUCLEI; ODD-EVEN NUCLEI; ODD-ODD NUCLEI; PARTICLE PROPERTIES; RADIOISOTOPES; SECONDS LIVING RADIOISOTOPES; SPECTROSCOPY
Optional Information
- Notes
- (c) 2008 The American Physical Society