TY - JOUR

T1 - [Formula Presented] decay of [Formula Presented]

T2 - Evidence for the Gamow-Teller resonance near [Formula Presented]

AU - Hu, Z.

AU - Batist, L.

AU - Agramunt, J.

AU - Algora, A.

AU - Brown, B. A.

AU - Cano-Ott, D.

AU - Collatz, R.

AU - Gadea, A.

AU - Gierlik, M.

AU - Górska, M.

AU - Grawe, H.

AU - Hellström, M.

AU - Janas, Z.

AU - Karny, M.

AU - Kirchner, R.

AU - Moroz, F.

AU - Płochocki, A.

AU - Rejmund, M.

AU - Roeckl, E.

AU - Rubio, B.

AU - Shibata, M.

AU - Szerypo, J.

AU - Tain, J. L.

AU - Wittmann, V.

PY - 1999/1/1

Y1 - 1999/1/1

N2 - In two complementary measurements, a cubelike array of 6 Euroball-Cluster germanium detectors and a total-absorption [Formula Presented]-spectrometer were used to investigate the [Formula Presented] decay of [Formula Presented], a three proton-hole nucleus with respect to the [Formula Presented] core. The half-life and [Formula Presented] value of the decay of the [Formula Presented] ground state of [Formula Presented] were determined to be 25.9(4) s and 6.98(11) MeV, respectively. A total of 603 [Formula Presented] rays (578 new) was observed, and 151 levels (132 new) in [Formula Presented] have been identified. An interesting [Formula Presented]-delayed [Formula Presented] cascade was observed, which comprises 6 [Formula Presented]-transitions with a deexcitation pattern involving an initial increase of the level spin. The Gamow-Teller (GT) [Formula Presented]-decay strength distributions from the two measurements reveal a large GT resonance around 4 MeV with a width of about 1.8 MeV. The hindrance factor for the total GT strength, summed from the ground state up to 6 MeV excitation energy in [Formula Presented], amounts to 4.3(6) with reference to a shell-model prediction. This factor is discussed in comparison with a core polarization and a Monte Carlo shell-model calculation.

AB - In two complementary measurements, a cubelike array of 6 Euroball-Cluster germanium detectors and a total-absorption [Formula Presented]-spectrometer were used to investigate the [Formula Presented] decay of [Formula Presented], a three proton-hole nucleus with respect to the [Formula Presented] core. The half-life and [Formula Presented] value of the decay of the [Formula Presented] ground state of [Formula Presented] were determined to be 25.9(4) s and 6.98(11) MeV, respectively. A total of 603 [Formula Presented] rays (578 new) was observed, and 151 levels (132 new) in [Formula Presented] have been identified. An interesting [Formula Presented]-delayed [Formula Presented] cascade was observed, which comprises 6 [Formula Presented]-transitions with a deexcitation pattern involving an initial increase of the level spin. The Gamow-Teller (GT) [Formula Presented]-decay strength distributions from the two measurements reveal a large GT resonance around 4 MeV with a width of about 1.8 MeV. The hindrance factor for the total GT strength, summed from the ground state up to 6 MeV excitation energy in [Formula Presented], amounts to 4.3(6) with reference to a shell-model prediction. This factor is discussed in comparison with a core polarization and a Monte Carlo shell-model calculation.

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U2 - 10.1103/PhysRevC.60.024315

DO - 10.1103/PhysRevC.60.024315

M3 - Article

AN - SCOPUS:85035259544

VL - 60

JO - Physical Review C - Nuclear Physics

JF - Physical Review C - Nuclear Physics

SN - 0556-2813

IS - 2

ER -