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Phys. Rev. Lett. 96, 042504 (2006) [4 pages]

First Precision Mass Measurements of Refractory Fission Fragments

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U. Hager1, T. Eronen1, J. Hakala1, A. Jokinen1,*, V. S. Kolhinen2, S. Kopecky1, I. Moore1, A. Nieminen1, M. Oinonen3, S. Rinta-Antila1, J. Szerypo2, and J. Äystö1
1Department of Physics, University of Jyväskylä, P.O. Box 35 (YFL), FIN-40014, Finland
2Sektion Physik, University of Munich (LMU), Am Coulombwall 1, D-85748 Garching, Germany
3Helsinki Institute of Physics, University of Helsinki, P.O. Box 64, FIN-00014, Finland

See Also: Publisher's Note

Received 15 April 2005; published 1 February 2006; corrected 7 February 2006

Atomic masses of 95–100Sr, 98–105Zr, and 102–110Mo have been measured with a precision of 10 keV employing a Penning trap setup at the IGISOL facility. Masses of 104,105Zr and 109,110Mo are measured for the first time. Our improved results indicate significant deviations from the previously published values deduced from beta end point measurements. The most neutron-rich studied isotopes are found to be significantly less bound (1 MeV) compared to the 2003 atomic mass evaluation. A strong correlation between nuclear deformation and the binding energy is observed in the two-neutron separation energy in all studied isotope chains.

© 2006 The American Physical Society

URL:
http://link.aps.org/doi/10.1103/PhysRevLett.96.042504
DOI:
10.1103/PhysRevLett.96.042504
PACS:
21.10.Dr, 07.75.+h, 27.60.+j

*Electronic address: ari.jokinen@phys.jyu.fi

See Also

Publisher's Note: U. Hager, T. Eronen, J. Hakala, A. Jokinen, V. S. Kolhinen, S. Kopecky, I. Moore, A. Nieminen, M. Oinonen, S. Rinta-Antila, J. Szerypo, and J. Äystö, Publisher’s Note: First Precision Mass Measurements of Refractory Fission Fragments [Phys. Rev. Lett. 96, 042504 (2006)], Phys. Rev. Lett. 96, 069901 (2006).

 
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