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Phys. Rev. Lett. 87, 142502 (2001) [4 pages]

Identification of the Iπ = 10+ Yrast Rotational State in 24Mg

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I. Wiedenhöver1,*, A. H. Wuosmaa1, R. V. F. Janssens1, C. J. Lister1, M. P. Carpenter1, H. Amro1,†, P. Bhattacharyya2, B. A. Brown3, J. Caggiano1, M. Devlin4,‡, A. Heinz1, F. G. Kondev1, T. Lauritsen1, D. G. Sarantites4, S. Siem1,§, L. G. Sobotka4, and A. Sonzogni1
1Argonne National Laboratory, Argonne, Illinois 60439
2Purdue University, West Lafayette, Indiana 47907
3Michigan State University, East Lansing, Michigan 48824
4Washington University, St. Louis, Missouri 63130

Received 5 February 2001; published 14 September 2001

Spins and parities of high spin states above the particle-binding threshold in 24Mg were determined with a basis expansion technique using triple and quadruple angular correlations between α particles and γ rays. The first unambiguous identification of a 10+ state is reported. Located at 19.2(1) MeV, this state decays predominantly by α emission, although a candidate γ-decay branch with a 5.927 MeV transition connecting this 10+ level to the rotational 8+ state at 13.2 MeV was identified as well. The corresponding γ-α branching ratio is 7(3)×10-4.

© 2001 The American Physical Society

URL:
http://link.aps.org/doi/10.1103/PhysRevLett.87.142502
DOI:
10.1103/PhysRevLett.87.142502
PACS:
27.30.+t, 07.05.Kf, 21.10.Re, 23.20.En

*Present address: NSCL, Michigan State University, East Lansing, MI 48824.

†Present address: Mississippi State University, Mississippi State, MS 39372.

‡Present address: Los Alamos National Laboratory, Los Alamos, NM 87545.

§Present address: University of Oslo, Oslo, Norway.

 
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