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Title: Large odd-even staggering in the very light platinum isotopes from laser spectroscopy

Abstract

Laser spectroscopy measurements have been carried out on very neutron-deficient platinum isotopes with the COMPLIS experimental set-up on line with the ISOLDE-Booster facility. For the first time, Hg {alpha}-decay was exploited to extend the very light platinum chain. Using the 5d{sup 9}6s {sup 3}D{sub 3}{yields}5d{sup 9}6p {sup 3}P{sub 2} optical transition, hyperfine spectra of {sup 182,181,180,179,178}Pt and {sup 183}Pt{sup m} were recorded for the first time. The variation of the mean square charge radius between these nuclei, the magnetic moments of the odd isotopes and the quadrupole moment of {sup 183}Pt{sup m} were thus measured. A large deformation change between {sup 183}Pt{sup g} and {sup 183}Pt{sup m}, an odd-even staggering of the charge radius and a deformation drop from A=179 are clearly observed. All these results are discussed and compared with microscopic theoretical predictions using Hartree-Fock-Bogolyubov calculations using the Gogny force.

Authors:
; ; ; ; ;  [1]; ; ;  [2]; ;  [3];  [4]; ;  [5]; ; ;  [6];  [7];  [8];  [9]
  1. Institut de Physique Nucleaire, IN2P3-CNRS, 91406 Orsay Cedex (France)
  2. Laboratoire Aime Cotton, 91405 Orsay Cedex (France)
  3. Foster Radiation Laboratory, Mc Gill University, H3A2T8 Montreal (Canada)
  4. Institut des Sciences Nuceaires, IN2P3-CNRS, 38026 Grenoble Cedex (France)
  5. C.E.A, Service de Physique Nucleaire, BP 12, 91680 Bruyeres-le-Chatel (France)
  6. Institut fuer Physik der Universitaet Mainz, 55099 Mainz (Germany)
  7. CERN, 1211 Geneve 23 (Switzerland)
  8. C.S.N.S.M., IN2P3-CNRS, 91405 Orsay Cedex (France)
  9. Flerov Laboratory of Nuclear Reaction, JINR, Dubna 141980, Moscow Region (Russian Federation)
Publication Date:
OSTI Identifier:
21207869
Resource Type:
Journal Article
Journal Name:
AIP Conference Proceedings
Additional Journal Information:
Journal Volume: 455; Journal Issue: 1; Conference: ENAM 98: 2. international conference on exotic nuclei and atomic masses, Bellaire, MI (United States), 23-27 Jun 1998; Other Information: DOI: 10.1063/1.57390; (c) 1998 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 0094-243X
Country of Publication:
United States
Language:
English
Subject:
73 NUCLEAR PHYSICS AND RADIATION PHYSICS; ALPHA DECAY; ENERGY-LEVEL TRANSITIONS; HARTREE-FOCK METHOD; HYPERFINE STRUCTURE; LASER SPECTROSCOPY; MAGNETIC MOMENTS; NEUTRONS; NUCLEAR DEFORMATION; NUCLEAR FORCES; NUCLEAR RADII; NUCLEAR STRUCTURE; PLATINUM 178; PLATINUM 180; PLATINUM 182; PLATINUM 183; QUADRUPOLE MOMENTS; VARIATIONS

Citation Formats

Le Blanc, F, Obert, J, Oms, J, Putaux, J C, Roussiere, B, Sauvage, J, Pinard, J, Cabaret, L, Duong, H T, Crawford, J E, Lee, J K. P., Genevey, J, Girod, M, Peru, S, Huber, G, Krieg, M, Sebastian, V, Lettry, J, Lunney, D, and Zemlyanoi, S. Large odd-even staggering in the very light platinum isotopes from laser spectroscopy. United States: N. p., 1998. Web. doi:10.1063/1.57390.
Le Blanc, F, Obert, J, Oms, J, Putaux, J C, Roussiere, B, Sauvage, J, Pinard, J, Cabaret, L, Duong, H T, Crawford, J E, Lee, J K. P., Genevey, J, Girod, M, Peru, S, Huber, G, Krieg, M, Sebastian, V, Lettry, J, Lunney, D, & Zemlyanoi, S. Large odd-even staggering in the very light platinum isotopes from laser spectroscopy. United States. doi:10.1063/1.57390.
Le Blanc, F, Obert, J, Oms, J, Putaux, J C, Roussiere, B, Sauvage, J, Pinard, J, Cabaret, L, Duong, H T, Crawford, J E, Lee, J K. P., Genevey, J, Girod, M, Peru, S, Huber, G, Krieg, M, Sebastian, V, Lettry, J, Lunney, D, and Zemlyanoi, S. Mon . "Large odd-even staggering in the very light platinum isotopes from laser spectroscopy". United States. doi:10.1063/1.57390.
@article{osti_21207869,
title = {Large odd-even staggering in the very light platinum isotopes from laser spectroscopy},
author = {Le Blanc, F and Obert, J and Oms, J and Putaux, J C and Roussiere, B and Sauvage, J and Pinard, J and Cabaret, L and Duong, H T and Crawford, J E and Lee, J K. P. and Genevey, J and Girod, M and Peru, S and Huber, G and Krieg, M and Sebastian, V and Lettry, J and Lunney, D and Zemlyanoi, S},
abstractNote = {Laser spectroscopy measurements have been carried out on very neutron-deficient platinum isotopes with the COMPLIS experimental set-up on line with the ISOLDE-Booster facility. For the first time, Hg {alpha}-decay was exploited to extend the very light platinum chain. Using the 5d{sup 9}6s {sup 3}D{sub 3}{yields}5d{sup 9}6p {sup 3}P{sub 2} optical transition, hyperfine spectra of {sup 182,181,180,179,178}Pt and {sup 183}Pt{sup m} were recorded for the first time. The variation of the mean square charge radius between these nuclei, the magnetic moments of the odd isotopes and the quadrupole moment of {sup 183}Pt{sup m} were thus measured. A large deformation change between {sup 183}Pt{sup g} and {sup 183}Pt{sup m}, an odd-even staggering of the charge radius and a deformation drop from A=179 are clearly observed. All these results are discussed and compared with microscopic theoretical predictions using Hartree-Fock-Bogolyubov calculations using the Gogny force.},
doi = {10.1063/1.57390},
journal = {AIP Conference Proceedings},
issn = {0094-243X},
number = 1,
volume = 455,
place = {United States},
year = {1998},
month = {12}
}