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APS » Journals » Phys. Rev. C » Volume 65 » Issue 5
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Phys. Rev. C 65, 051303(R) (2002) [4 pages]

Delayed alignments in the N=Z nuclei 84Mo and 88Ru

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N. Mărginean1,2, D. Bucurescu2, C. Rossi Alvarez3, C. A. Ur3,2, Y. Sun4,5, D. Bazzacco3, S. Lunardi3, G. de Angelis1, M. Axiotis1, E. Farnea3, A. Gadea1, M. Ionescu-Bujor2, A. Iordăchescu2, W. Krolas6, Th. Kröll1,3, S. M. Lenzi3, T. Martinez1, R. Menegazzo3, D. R. Napoli1, P. Pavan3, Zs. Podolyak7, M. De Poli1, B. Quintana8, and P. Spolaore1
1INFN, Laboratori Nazionali di Legnaro, Legnaro, Italy
2H. Hulubei National Institute for Physics and Nuclear Engineering, Bucharest, Romania
3Dipartimento di Fisica dell’Università and INFN, Sezione di Padova, Padova, Italy
4Department of Physics and Astronomy, University of Tennessee, Knoxville, Tennessee 37996
5Department of Physics, Xuzhou Normal University, Xuzhou, Jiangsu 221009, People’s Republic of China
6Institute of Nuclear Physics, Krakow, Poland
7Department of Physics, University of Surrey, Guildford, GU2 7XH, United Kingdom
8Grupo de Física Corpuscular, Universidad de Salamanca, Salamanca, Spain

Received 7 February 2002; published 18 April 2002

The yrast band of the N=Z nucleus 84Mo has been extended up to the 10+ state. Its moment of inertia varies smoothly up to this state (rotational frequency 0.6 MeV). The new data confirm the systematic delay of the particle alignment frequency in N=Z nuclei with respect to the neighboring N>Z nuclei, which has been suggested as a signature of the neutron-proton pairing interaction. Projected shell model calculations performed for the heaviest N=Z nuclei studied so far, 84Mo and 88Ru, predict that the confirmation of a possible enhancement of the neutron-proton residual interaction requires the observation of still higher spins in these nuclei.

© 2002 The American Physical Society

URL:
http://link.aps.org/doi/10.1103/PhysRevC.65.051303
DOI:
10.1103/PhysRevC.65.051303
PACS:
21.10.Re, 23.20.Lv, 25.70.Jj, 27.50.+e
 
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