Published 1977 | Version v1
Report Open

Study by on-line spectroscopy of the 187Au energy states: interpretation in terms of triaxial nuclear deformations

Creators

  • 1. Paris-11 Univ., 91 - Orsay (France). Inst. de Physique Nucleaire
  • 2. Paris-11 Univ., 91 - Orsay (France). Centre de Spectrometrie Nucleaire et de Spectrometrie de Masse

Description

The decay of 187Hg was studied using 'on-line' mass-separated sources. A decay scheme is proposed. The negative parity states are analysed within the 'quasi-particule + triaxial rotor' model of J. Meyer-ter-Vehn: it is found that the 11/2- state at 224 keV corresponds to a nuclear deformation β=0.14 and γ=350 and the 9/2- state at 120.6 keV to a deformation β=0.2 and γ=210. A systematic analysis of the heavier odd-mass gold isotopes is given in the framework of this model

Availability note (English)

MF available from INIS under the Report Number.

Abstract (French)

On a etudie la desintegration de 187Hg en utilisant un separateur en ligne. On propose un schema de desintegration. On analyse les etats de parite negative dans le modele quasi-particule + rotor asymetrique' de J. Meyer-ter-Vehn: on montre que l'etat 11/2- a 224 keV correspond a une deformation nucleaire β=0,14 et γ=350 et l'etat 9/2- a 120,6 keV a une deformation β=0,2 et γ=210. On donne une analyse systematique des isotopes d'or de masse impaire plus lourds dans le cadre de ce modele

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Additional details

Additional titles

Original title (French)
Etude par spectroscopie 'en ligne' des etats d'energie de

Publishing Information

Imprint Pagination
36 p.
Report number
IPNO-PhN--77-30

INIS

Country of Publication
France
Country of Input or Organization
France
INIS RN
10420113
Subject category
S73: NUCLEAR PHYSICS AND RADIATION PHYSICS;
Descriptors DEI
DECAY; ENERGY LEVELS; ENERGY-LEVEL TRANSITIONS; GAMMA SPECTRA; GOLD 187; GOLD 187 TARGET; MERCURY 187; MULTIPOLARITY; NUCLEAR DEFORMATION; PARTICLE-CORE COUPLING MODEL
Descriptors DEC
BETA DECAY RADIOISOTOPES; DEFORMATION; ELECTRON CAPTURE RADIOISOTOPES; EVEN-ODD NUCLEI; GOLD ISOTOPES; HEAVY NUCLEI; ISOTOPES; MATHEMATICAL MODELS; MERCURY ISOTOPES; MINUTES LIVING RADIOISOTOPES; NUCLEAR MODELS; NUCLEI; ODD-EVEN NUCLEI; RADIOISOTOPES; SPECTRA; TARGETS