Low-energy Coulomb excitation of ⁶²Fe and ⁶²Mn following in-beam decay of ⁶²Mn

Summary, in English

Sub-barrier Coulomb excitation was performed on a mixed beam of ⁶²Mn and ⁶²Fe, following in-trap β⁻ decay of ⁶²Mn at REX-ISOLDE, CERN. The trapping and charge breeding times were varied in order to alter the composition of the beam, which was measured by means of an ionisation chamber at the zero-angle position of the Miniball array. A new transition was observed at 418 keV, which has been tentatively associated to a (2⁺,3⁺)→ 1_g.s. ⁺ transition. This fixes the relative positions of the β-decaying 4⁺ and 1⁺ states in ⁶²Mn for the first time. Population of the 2₁ ⁺ state was observed in ⁶²Fe and the cross-section determined by normalisation to the ¹⁰⁹Ag target excitation, confirming the B(E2) value measured in recoil-distance lifetime experiments.

• Author: L. P. Gaffney; J. Van de Walle; B. Bastin; V. Bildstein; A. Blazhev; N. Bree; J. Cederkäll; I. Darby; H. De Witte; D. DiJulio; J. Diriken; V. N. Fedosseev; Ch Fransen; R. Gernhäuser; A. Gustafsson; H. Hess; M. Huyse; N. Kesteloot; Th Kröll; R. Lutter; B. A. Marsh; P. Reiter; M. Seidlitz; P. Van Duppen; D. Voulot; N. Warr; F. Wenander; K. Wimmer; K. Wrzosek-Lipska
• Department/s: Nuclear physics
• Publishing year: 2015-10-01
• Language: English
• Pages: 1-9
• Publication/Series: European Physical Journal A
• Volume: 51
• Issue: 10
• Links: http://dx.doi.org/10.1140/epja/i2015-15136-6
• Document type: Journal article
• Publisher: Springer
• Topic: Subatomic Physics
• Status: Published
• ISBN/ISSN/Other: ISSN: 1434-6001