Abstract
In the present work we report on results of {beta}-decay measurements of N=82 and 83 nuclei above the doubly magic {sup 146}Gd, namely the decays of the 1/2{sup +} and 11/2{sup -} isomers in {sup 147}Tb and {sup 149}Ho, and on the unusual {beta}-decay of the 27/2{sup -} 3-quasiparticle isomer in {sup 149}Dy at 3 MeV excitation. For these nuclei the only allowed {beta}-decay is the {pi}h{sub 11/2} {yields} {nu}h{sub 9/2} GT-transition. The data provide new information on several nuclear structure aspects. Among these are the absolute GT-transition strength, and the distrubution of the {nu}h{sub 9/2} orbital in the daugther nucleus. The {beta}-decay data firmly identify specific one- or few-nucleon configurations at low excitation in the daugther nucleus, and moreover, the {gamma}-decay of the primary {beta}-populated states can excite low-lying above yrast levels that cannot be reached by other techniques and are of particular interest for understanding of the nuclear structure in the nuclei of this region. (orig.).
Citation Formats
Menegazzo, R.
Beta decay studies of shell model aspects of N=83 and 84 nuclei.
Germany: N. p.,
1991.
Web.
Menegazzo, R.
Beta decay studies of shell model aspects of N=83 and 84 nuclei.
Germany.
Menegazzo, R.
1991.
"Beta decay studies of shell model aspects of N=83 and 84 nuclei."
Germany.
@misc{etde_10129201,
title = {Beta decay studies of shell model aspects of N=83 and 84 nuclei}
author = {Menegazzo, R}
abstractNote = {In the present work we report on results of {beta}-decay measurements of N=82 and 83 nuclei above the doubly magic {sup 146}Gd, namely the decays of the 1/2{sup +} and 11/2{sup -} isomers in {sup 147}Tb and {sup 149}Ho, and on the unusual {beta}-decay of the 27/2{sup -} 3-quasiparticle isomer in {sup 149}Dy at 3 MeV excitation. For these nuclei the only allowed {beta}-decay is the {pi}h{sub 11/2} {yields} {nu}h{sub 9/2} GT-transition. The data provide new information on several nuclear structure aspects. Among these are the absolute GT-transition strength, and the distrubution of the {nu}h{sub 9/2} orbital in the daugther nucleus. The {beta}-decay data firmly identify specific one- or few-nucleon configurations at low excitation in the daugther nucleus, and moreover, the {gamma}-decay of the primary {beta}-populated states can excite low-lying above yrast levels that cannot be reached by other techniques and are of particular interest for understanding of the nuclear structure in the nuclei of this region. (orig.).}
place = {Germany}
year = {1991}
month = {Sep}
}
title = {Beta decay studies of shell model aspects of N=83 and 84 nuclei}
author = {Menegazzo, R}
abstractNote = {In the present work we report on results of {beta}-decay measurements of N=82 and 83 nuclei above the doubly magic {sup 146}Gd, namely the decays of the 1/2{sup +} and 11/2{sup -} isomers in {sup 147}Tb and {sup 149}Ho, and on the unusual {beta}-decay of the 27/2{sup -} 3-quasiparticle isomer in {sup 149}Dy at 3 MeV excitation. For these nuclei the only allowed {beta}-decay is the {pi}h{sub 11/2} {yields} {nu}h{sub 9/2} GT-transition. The data provide new information on several nuclear structure aspects. Among these are the absolute GT-transition strength, and the distrubution of the {nu}h{sub 9/2} orbital in the daugther nucleus. The {beta}-decay data firmly identify specific one- or few-nucleon configurations at low excitation in the daugther nucleus, and moreover, the {gamma}-decay of the primary {beta}-populated states can excite low-lying above yrast levels that cannot be reached by other techniques and are of particular interest for understanding of the nuclear structure in the nuclei of this region. (orig.).}
place = {Germany}
year = {1991}
month = {Sep}
}