Is the $7/2_1^-$ Isomer State of $^{43}$S Spherical?

We report on the spectroscopic quadrupole moment measurement of the 7/2−1 isomeric state in S271643 [E∗=320.5(5)  keV, T1/2=415(3)  ns], using the time dependent perturbed angular distribution technique at the RIKEN RIBF facility. Our value, ∣Qs∣=23(3)  efm2, is larger than that expected for a singl...

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Detalles Bibliográficos
Autores principales: Chevrier, R, Daugas, J M, Gaudefroy, L, Ichikawa, Y, Ueno, H, Hass, M, Haas, H, Cottenier, S, Aoi, N, Asahi, K, Balabanski, D L, Fukuda, N, Furukawa, T, Georgiev, G, Hayashi, H, Iijima, H, Inabe, N, Inoue, T, Ishihara, M, Ishii, Y, Kameda, D, Kubo, T, Nanao, T, Neyens, G, Ohnishi, T, Rajabali, M M, Suzuki, K, Takeda, H, Tsuchiya, M, Vermeulen, N, Watanabe, H, Yoshimi, A
Publicado: 2012
Materias:
Nuclear Physics - Experiment
Acceso en línea:https://dx.doi.org/10.1103/PhysRevLett.108.162501
http://cds.cern.ch/record/1559796
Descripción
Sumario:We report on the spectroscopic quadrupole moment measurement of the 7/2−1 isomeric state in S271643 [E∗=320.5(5)  keV, T1/2=415(3)  ns], using the time dependent perturbed angular distribution technique at the RIKEN RIBF facility. Our value, ∣Qs∣=23(3)  efm2, 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 ∣Qs∣, and show that non-negligible correlations drive the isomeric state away from a purely spherical shape.

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