In:
EPJ Web of Conferences, EDP Sciences, Vol. 193 ( 2018), p. 05007-
Abstract:
The γ-coincidence studies of low-spin structures of 210 Bi and 206 Tl are presented. The 210 Bi nucleus, populated in thermal neutron capture reaction, was investigated using EXILL HPGe array at Institut Laue-Langevin in Grenoble. The experimental results were compared to the shell-model calculations allowing to draw the conclusions on the nature of the low-spin excitations populated below the neutron binding energy in 210 Bi (4.6 MeV). It has been found that some levels cannot be described by the valence proton and neutron couplings, but may arise from couplings of valence particles to the 3 - octupole phonon of the doubly magic 208 Pb core. Moreover, preliminary results of a low-spin structure measurements of 206 Tl by the γ-coincidence technique, making use of the 205 Tl(n,γ)206Tl reaction at the FIPPS prompt γ-ray spectroscopy facility of ILL are shown. The population of a large number of excited states of 206 Tl above the ground state up to the neutron binding energy (at 6.5 MeV), within a few units of spin is expected. The analysis involving double and triple γ-coincidences and γγ-angular correlations will allow to significantly extend the experimental information on the energy and spin-parity of the levels in 206 Tl. This will help shedding light on the proton-hole and neutron-hole couplings near the doubly magic core 208 Pb.
Type of Medium:
Online Resource
ISSN:
2100-014X
DOI:
10.1051/epjconf/201819305007
Language:
English
Publisher:
EDP Sciences
Publication Date:
2018
detail.hit.zdb_id:
2595425-8
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