Mass measurements in the vicinity of the r p-process and the ν p-process paths with the Penning trap facilities JYFLTRAP and SHIPTRAP

Weber, C. and Elomaa, V. -V. and Ferrer, R. and Fröhlich, C. and Ackermann, D. and Aystoe, J. and Audi, G. and Batist, L. and Blaum, K. and Block, M. and Chaudhuri, A. and Dworschak, M. and Eliseev, S. and Eronen, T. and Hager, U. and Hakala, J. and Herfurth, F. and Hessberger, F. P. and Hofmann, S. and Jokinen, A. and Kankainen, A. and Kluge, H. -J. and Langanke, K. and Martin, A. and Martinez-Pinedo, G. and Mazzocco, M. and Moore, I. D. and Neumayr, J. B. and Novikov, Yu. N. and Penttilae, H. and Plass, W. R. and Popov, A. V. and Rahaman, S. and Rauscher, T. and Rauth, C. and Rissanen, J. and Rodriguez, D. and Saastamoinen, A. and Scheidenberger, C. and Schweikhard, L. and Seliverstov, D. M. and Sonoda, T. and Thielemann, F. -K. and Thirolf, P. G. and Vorobjev, G. K.. (2008) Mass measurements in the vicinity of the r p-process and the ν p-process paths with the Penning trap facilities JYFLTRAP and SHIPTRAP. Physical review. C, Nuclear physics, Vol. 78, H. 5 , 054310, 18 S..

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Official URL: http://edoc.unibas.ch/dok/A5253866

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Abstract

The masses of very neutron-deficient nuclides close to the astrophysical r p- and nu p-process paths have been determined with the Penning trap facilities JYFLTRAP at JYFL/Jyvaskyla and SHIPTRAP at GSI/Darmstadt. Isotopes from yttrium (Z=39) to palladium (Z=46) have been produced in heavy-ion fusion-evaporation reactions. In total, 21 nuclides were studied, and almost half of the mass values were experimentally determined for the first time: Tc-88, Ru90-92, Rh92-94, and Pd-94,Pd-95. For the Pd-95(m), (21/2(+)) high-spin state, a first direct mass determination was performed. Relative mass uncertainties of typically delta m/m=5x10(-8) were obtained. The impact of the new mass values has been studied in nu p-process nucleosynthesis calculations. The resulting reaction flow and the final abundances are compared with those obtained with the data of the Atomic Mass Evaluation 2003.

Faculties and Departments:	05 Faculty of Science > Departement Physik > Former Organization Units Physics > Theoretische Physik Astrophysik (Thielemann)
UniBasel Contributors:	Rauscher, Thomas and Thielemann, Friedrich-Karl
Item Type:	Article, refereed
Article Subtype:	Research Article
Publisher:	American Institute of Physics
ISSN:	0556-2813
Note:	Variant title: Mass measurements in the vicinity of the r p-process and the nu p-process paths with the Penning trap facilities JYFLTRAP and SHIPTRAP -- Publication type according to Uni Basel Research Database: Journal article
Related URLs:	Document
Identification Number:	doi: 10.1103/PhysRevC.78.054310 isi: 000261214200019
Last Modified:	22 Mar 2012 14:26
Deposited On:	22 Mar 2012 13:49

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