Penning trap mass measurements of $^{99\ensuremath{-}109}\mathrm{Cd}$ with the ISOLTRAP mass spectrometer, and implications for the $rp$ process

Penning trap mass measurements of ${}^{99 - 109}{Cd}$ with the ISOLTRAP mass spectrometer, and implications for the $r p$ process

M. Breitenfeldt, G. Audi, D. Beck, K. Blaum, S. George, F. Herfurth, A. Herlert, A. Kellerbauer, H. -J. Kluge, M. Kowalska, D. Lunney, S. Naimi, D. Neidherr, H. Schatz, S. Schwarz, and L. Schweikhard

Phys. Rev. C 80, 035805 – Published 23 September 2009

Abstract

Penning trap mass measurements of neutron-deficient Cd isotopes ${}^{99 - 109}{Cd}$ have been performed with the ISOLTRAP mass spectrometer at ISOLDE/CERN, all with relative mass uncertainties below $3 \cdot 10^{- 8}$ . A new mass evaluation has been performed. The mass of ${}^{99}{Cd}$ has been determined for the first time, which extends the region of accurately known mass values toward the doubly magic nucleus ${}^{100}{Sn}$ . The implication of the results on the reaction path of the $r p$ process in stellar x-ray bursts is discussed. In particular, the uncertainty of the abundance and the overproduction created by the $r p$ -process for the mass $A = 99$ are demonstrated by reducing the uncertainty of the proton-separation energy of ${}^{100}{In}$ $S_{p}$ ( ${}^{100}{In}$ ) by a factor of $2.5$ .

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Received 17 April 2009

DOI:https://doi.org/10.1103/PhysRevC.80.035805

Authors & Affiliations

M. Breitenfeldt^1,*, G. Audi², D. Beck³, K. Blaum^4,5, S. George^4,6, F. Herfurth³, A. Herlert⁷, A. Kellerbauer⁸, H. -J. Kluge^3,5, M. Kowalska⁷, D. Lunney², S. Naimi², D. Neidherr⁶, H. Schatz^9,10, S. Schwarz⁹, and L. Schweikhard¹

¹Institut für Physik, Ernst-Moritz-Arndt-Universität, D-17487 Greifswald, Germany
²CSNSM-IN2P3-CNRS, F-91405 Orsay-Campus, France
³GSI Helmholtzzentrum für Schwerionenforschung GmbH, Planckstraße 1, D-64291 Darmstadt, Germany
⁴Max-Planck-Institut für Kernphysik, D-69117 Heidelberg, Germany
⁵Ruprecht-Karls-Universität, Institut für Physik, D-69120 Heidelberg, Germany
⁶Institut für Physik, Johannes Gutenberg-Universität, D-55128 Mainz, Germany
⁷CERN, Physics Department, 1211 Geneva 23, Switzerland
⁸Commission of the European Communities, Joint Research Center, European Institute for Transuranium Elements, D-76125 Karlsruhe, Germany
⁹NSCL, Department of Physics and Astronomy, Michigan State University, East Lansing, Michigan 48824, USA
¹⁰Joint Institute for Nuclear Astrophysics, Michigan State University, East Lansing, Michigan 48824, USA

^*Corresponding address: CERN, Physics Department, 1211 Geneva 23, Switzerland;Martin.Breitenfeldt@cern.ch. This publication is part of the Ph.D. thesis of M. Breitenfeldt.

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Vol. 80, Iss. 3 — September 2009

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Physical Review C

covering nuclear physics

Penning trap mass measurements of ${}^{99 - 109}{Cd}$ with the ISOLTRAP mass spectrometer, and implications for the $r p$ process

M. Breitenfeldt, G. Audi, D. Beck, K. Blaum, S. George, F. Herfurth, A. Herlert, A. Kellerbauer, H. -J. Kluge, M. Kowalska, D. Lunney, S. Naimi, D. Neidherr, H. Schatz, S. Schwarz, and L. Schweikhard

Phys. Rev. C 80, 035805 – Published 23 September 2009

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Physical Review C

covering nuclear physics

Penning trap mass measurements of Cd99−109 with the ISOLTRAP mass spectrometer, and implications for the rp process

M. Breitenfeldt, G. Audi, D. Beck, K. Blaum, S. George, F. Herfurth, A. Herlert, A. Kellerbauer, H. -J. Kluge, M. Kowalska, D. Lunney, S. Naimi, D. Neidherr, H. Schatz, S. Schwarz, and L. Schweikhard

Phys. Rev. C 80, 035805 – Published 23 September 2009

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Penning trap mass measurements of ${}^{99 - 109}{Cd}$ with the ISOLTRAP mass spectrometer, and implications for the $r p$ process