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Phys. Rev. C 65, 044618 (2002) [8 pages]

Direct mass measurements of proton-rich isotopes of Ge, As, Se, and Br

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G. F. Lima1,2, A. Lépine-Szily1, G. Audi3, W. Mittig4, M. Chartier4,5 *, N. A. Orr6, R. Lichtenthaler1, J. C. Angelique2, J. M. Casandjian4, A. Cunsolo7, C. Donzaud8, A. Foti7, A. Gillibert9, M. Lewitowicz4, S. Lukyanov10, M. MacCormick8, D. J. Morrissey11, A. N. Ostrowski3,12, B. M. Sherrill11, C. Stephan8, T. Suomijarvi8, L. Tassan-Got8, D. J. Vieira13, A. C. C. Villari3, and J. M. Wouters13
1Instituto de Física-Universidade de São Paulo, C.P.66318, 05315-970 São Paulo, Brazil
2FACENS, Faculdade de Engenharia de Sorocaba, Sorocaba, Brazil
3CSNSM (IN2P3-CNRS&UPS), Bâtiment 108, F-91405 Orsay Campus, France
4GANIL, Boulevard Henry Becquerel, BP 5027, F-14021 Caen Cedex, France
5University of Liverpool, Department of Physics, Liverpool L69 7ZE, United Kingdom
6LPC, IN2P3-CNRS, ISMRA et Université de Caen, F-14050 Caen Cedex, France
7INFN, Corso Itália 57, I-95129 Catania, Italy
8IPN Orsay, BP1, F-91406 Orsay Cedex, France
9CEA/DSM/DAPNIA/SPhN, CEN Saclay, F-91191 Gif-sur-Yvette, France
10LNR, JINR, Dubna, P.O. Box 79, RU-101000 Moscow, Russia
11NSCL, Michigan State University, East Lansing, Michigan 48824-1321
12Department of Physics and Astronomy, University of Edinburgh, Edinburgh EH9 3JZ, United Kingdom
13Los Alamos National Laboratory, Los Alamos, New Mexico 87545

Received 30 November 2001; published 3 April 2002

The masses of neutron-deficient nuclei close to the proton drip line are an important input for the rapid proton-capture process modeling above 56Ni. The measurement of the masses of proton-rich nuclei with 32<~Z<~35 has been made using a direct time-of-flight technique. The masses of the nuclides 66As,68Se, and 71Br are reported for the first time, with mass excesses of -51 500(680), -53 620(1000), and -57 060(570) keV being found. The masses agree well in most cases with the Audi-Wapstra systematics.


©2002 The American Physical Society

URL: http://link.aps.org/doi/10.1103/PhysRevC.65.044618
DOI: 10.1103/PhysRevC.65.044618
PACS: 21.10.Dr, 27.50.+e, 26.50.+x

* On leave from CENBG, Université de Bordeaux, Le Haut Vigneau, BP120, F-33175 Gradignan, France.

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