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Is the 7/21- Isomer State of 43S Spherical?

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PHYSICAL REVIEW LETTERS
卷 108, 期 16, 页码 -

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AMER PHYSICAL SOC
DOI: 10.1103/PhysRevLett.108.162501

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  1. Japanese-French Hubert Curien partnership (PHC)
  2. BriX IAP of OSTC Belgium [P6/23]
  3. Bulgarian National Science Fund [DID-02/16, DRNF-02/5]
  4. [20532089]
  5. Grants-in-Aid for Scientific Research [22340071, 21740210] Funding Source: KAKEN

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We report on the spectroscopic quadrupole moment measurement of the 7/2(1)(-) isomeric state in S-43(16)27 [E* = 320.5(5) keV, T-1/2 = 415(3) ns], using the time dependent perturbed angular distribution technique at the RIKEN RIBF facility. Our value, vertical bar Q(s) vertical bar = 23(3) efm(2), is larger than that expected for a single-particle state. Shell model calculations using the modern SDPF-U interaction for this mass region reproduce remarkably well the measured vertical bar Q(s) vertical bar, and show that non-negligible correlations drive the isomeric state away from a purely spherical shape.

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