Matea I, Georgiev G, Daugas JM, Hass M, Neyens G, Astabatyan R, Baby LT, Balabanski DL, Bélier G, Borremans D, Goldring G, Goutte H, Himpe P, Lewitowicz M, Lukyanov S, Méot V, Santos FDO, Penionzhkevich YE, Roig O, Sawicka M. Magnetic moment of the fragmentation-aligned 61Fe (9/2(+)) isomer.
PHYSICAL REVIEW LETTERS 2004;
93:142503. [PMID:
15524786 DOI:
10.1103/physrevlett.93.142503]
[Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/19/2004] [Indexed: 05/24/2023]
Abstract
We report on the g factor measurement of an isomer in the neutron-rich (61)(26)Fe (E(*)=861 keV and T(1/2)=239(5) ns). The isomer was produced and spin aligned via a projectile-fragmentation reaction at intermediate energy, the time dependent perturbed angular distribution method being used for the measurement of the g factor. For the first time, due to significant improvements of the experimental technique, an appreciable residual alignment of the nuclear spin ensemble has been observed, allowing a precise determination of its g factor, including the sign: g=-0.229(2). In this way we open the possibility to study moments of very neutron-rich short-lived isomers, not accessible via other production and spin-orientation methods.
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