$E0$ decay from the first excited ${0}^{+}$ state in ${}^{162}$Yb

$E 0$ decay from the first excited $0^{+}$ state in $^{162}$ Yb

N. Blasi, L. Guerro, A. Saltarelli, O. Wieland, and L. Fortunato

Phys. Rev. C 88, 014318 – Published 19 July 2013

Abstract

Excited states in $^{162}$ Yb were populated via $β^{+}$ /EC decay and were studied via conversion electrons and γ-ray spectroscopy at the Tandem Accelerator in the INFN Laboratory Nazionali del Sud in Catania, Italy. Conversion electrons were detected by a miniorange spectrometer with a transmission energy window that ranged from 500 to 1300 keV. The $E$ 0 decay of the first excited state at 1006 keV to the ground state was observed, and a $X$ ( $E$ 0/ $E$ 2) value was deduced. The value is compared to a few IBM-1 calculations by using the ECQF formalism or the full Hamiltonian in multipole expansion. Calculations turn out to be quite sensitive to properties related to nuclear shape.

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Received 15 May 2013

DOI:https://doi.org/10.1103/PhysRevC.88.014318

Authors & Affiliations

N. Blasi¹, L. Guerro^2,3, A. Saltarelli^2,3, O. Wieland¹, and L. Fortunato^4,5

¹INFN, Sezione di Milano, via Celoria 16, 20133 Milano, Italy
²Division of Physics, School of Science and Technology, Università di Camerino, via Madonna delle Carceri, 62032 Camerino (MC), Italy
³INFN-Sezione di Perugia, via A. Pascoli, 06123 Perugia, Italy
⁴Dipartimento di Fisica e Astronomia “Galileo Galilei,” Università di Padova, via Marzolo, 8, 35131 Padova, Italy
⁵INFN, Sezione di Padova, via Marzolo, 8, 35131 Padova, Italy

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Vol. 88, Iss. 1 — July 2013

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Physical Review C

covering nuclear physics