In-beam gamma spectroscopy of very neutron-rich nuclei at GANIL

The structure of nuclei far from stability can be investigated by means of in-beam gamma spectroscopy using both stable and radioactive beams. A {gamma}-array consisting of BaF2 and Ge detectors have been used at GANIL in order to perform two of such experiments: i) Secondary beams of neutron-rich G...

Full description

Saved in:
Bibliographic Details
Main Authors: Azaiez, F., Belleguic, M., Sorlin, O., Leenhardt, S., Bourgeois, C., Donzaud, C., Duprat, J., Guillemaud-Mueller, D., Mueller, A. C., Pougheon, F., Saint-Laurent, M. G., Lopez, M. J., Achouri, N. L., Daugas, J. M., Lewitowicz, M., Mittig, W., De Oliveira, F., Roussel-Chomaz, P., Savajols, H., Penionzhkevich, Yu-E., GANIL Caen, FLNR-KINR Dubna, IAP Bucharest, LPC Caen, CSNSM Orsay, DAPNIA-CEA, DAM-CEA, RPI-REZ, GSI Darmstadt
Format: Conference Proceeding
Language:English
Subjects:
COULOMB EXCITATION
CROSS SECTIONS
EXCITED STATES
GAMMA DECAY
GAMMA SPECTROSCOPY
GANIL CYCLOTRON
GE SEMICONDUCTOR DETECTORS
GROUND STATES
KRYPTON 86
MAGNESIUM 32
NEON 28
NEUTRON-RICH ISOTOPES
NITROGEN 20
NUCLEAR FRAGMENTATION
NUCLEAR PHYSICS AND RADIATION PHYSICS
NUCLEAR STRUCTURE
OXYGEN 20
OXYGEN 22
RADIOACTIVE ION BEAMS
SHELL MODELS
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:The structure of nuclei far from stability can be investigated by means of in-beam gamma spectroscopy using both stable and radioactive beams. A {gamma}-array consisting of BaF2 and Ge detectors have been used at GANIL in order to perform two of such experiments: i) Secondary beams of neutron-rich Ge, Zn and Ni isotopes around N=40 were produced from the fragmentation of a primary {sup 86}Kr beam, and analyzed by means of the LISE3 spectrometer. For the transitions between the O{sup +} ground state and the first 2{sup +} state, B(E2) values have been extracted from Coulomb excitation cross-section measurement..Some of the obtained results related to the effectiveness of the N=40 spherical sub-shell closure as well as future improvements of the quality of the data are discussed. ii) In-beam {gamma}-spectroscopy of neutron-rich nuclei around {sup 32}Mg produced by fragmentation of {sup 36}S have been recently performed. Gamma decay of relatively higher excited states have been measured in a large number of exotic light nuclei. Preliminary results obtained in a number of even-even nuclei around N=20, such as {sup 20,22}O, {sup 26,28}Ne and {sup 30,32}Mg are presented.
ISSN:0094-243X
1551-7616
DOI:10.1063/1.59554