https://doi.org/10.1007/s100500070085
Accurate masses of unstable rare-earth isotopes by ISOLTRAP
1
GSI, D-64291, Darmstadt, Germany
2
Institut für Physik, Universität Mainz, D-55099, Mainz, Germany
3
CSNSM-IN2P3-CNRS, F-91405, Orsay-Campus, France
4
CERN, CH-1211, Geneva, Switzerland
5
Instituto de Estructura de la Materia, CSIC, Madrid, Spain
6
Foster Radiation Laboratory, McGill University, Montreal, H3A 2B1, Canada
7
Institute of Experimental Physics, Warsaw-University, PL-00681, Warsaw, Poland
* e-mail: This email address is being protected from spambots. You need JavaScript enabled to view it.
Received:
18
April
2000
Accepted:
5
July
2000
Published online: 15 September 2000
Abstract
Direct mass measurements of neutron-deficient rare-earth isotopes in the vicinity of 146Gd were performed with the Penning trap mass spectrometer ISOLTRAP at ISOLDE/CERN. This paper reports on the measurement of more than 40 isotopes of the elements praseodymium, neodymium, promethium, samarium, europium, dysprosium and holmium, that have been measured with a typical accuracy of δm ≈ 14 keV. An atomic mass evaluation has been performed taking into account other experimental mass values via a least-squares adjustment. The results of the adjustment are discussed.
PACS: 21.10.Dr Binding energies and masses –
Present address: Instituut voor Kern- en Stralingsfysica, K.U. Leuven, Celestijnenlaan 200 D, B-3001, Leuven, Belgium
Present address: NSCL, Michigan State University, East Lansing, MI-48824, USA
Present address: Department of Physics, University of Jyväskylä, PB 35 (Y5), FIN-40351, Jyväskylä, Finland
© Società Italiana di Fisica and Springer-Verlag, 2000
