β and isomeric decay of V64
Abstract
Background: Collectivity has been inferred in Cr64 based on measurements of the excitation energy of the first excited 2+ state and B(E2;21+→01+) value. However, the energy of the 21+ state in Cr64 is not precisely known.
Purpose: The objective was to precisely determine the energy of the 21+→01+ transition in Cr64 following the β decay of V64. Method: V64 ions were produced by projectile fragmentation at the National Superconducting Cyclotron Laboratory and stopped in a double-sided Si strip detector. V64 isomeric and β-delayed γ rays were detected in an ancillary array of high-purity Ge detectors in order to determine the energies of excited states in V64 and Cr64. Results: The first excited 2+ state in Cr64 was populated following the β decay of V64, and an energy of 430(2) keV was determined. Additionally, an isomeric state in V64 with an energy of 81.0(7) keV and a half-life less than 1 μs was discovered. Conclusion: The excitation energy of the 21+ state in Cr64 has been precisely determined and an isomeric state is identified in V64 for the first time.- Publication:
-
Physical Review C
- Pub Date:
- June 2014
- DOI:
- 10.1103/PhysRevC.89.067303
- Bibcode:
- 2014PhRvC..89f7303S
- Keywords:
-
- 23.40.-s;
- 21.10.-k;
- 27.50.+e;
- Beta decay;
- double beta decay;
- electron and muon capture;
- Properties of nuclei;
- nuclear energy levels;
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