Eur. Phys. J. A (2004) 22: 163-171
https://doi.org/10.1140/epja/i2004-10015-y

Direct mass measurements of neutron-deficient xenon isotopes using the ISOLTRAP mass spectrometer

¹ GSI Darmstadt, Planckstr. 1, 64291, Darmstadt, Germany
² TRIUMF, 4004 Wesbrook Mall, V6T 2A3, Vancouver, B.C., Canada
³ Division EP, CERN, 1211, Geneva 23, Switzerland
⁴ CSNSM-IN2P3-CNRS, 91405, Orsay-Campus, France
⁵ NSCL/MSU, South Shaw Lane, 48824-1321, East Lansing, MI, USA
⁶ Department of Physics, McGill University, H3A 2T8, Montreal, Canada

^* e-mail: JDilling@triumf.ca

Received: 15 January 2004
Accepted: 8 April 2004
Published online: 3 November 2004

Abstract

The masses of the noble-gas Xe isotopes with 114≤A≤123 have been directly measured for the first time. The experiments were carried out with the ISOLTRAP triple trap spectrometer at the on-line mass separator ISOLDE/CERN. A mass resolving power of the Penning trap spectrometer of m/Δm of close to a million was chosen resulting in an accuracy of δm ⩽ 13 keV for all investigated isotopes. Conflicts with existing, indirectly obtained, mass data by several standard deviations were found and are discussed. An atomic mass evaluation has been performed and the results are compared to information from laser spectroscopy experiments and to recent calculations employing an interacting boson model.