Engineering topics
Daniel, A. V.
Publications and source records attributed to Daniel, A. V..
First observation of collective rotational bands in neutron-rich 142 La and the study of octupole/triaxial deformations in 142,143 La
Collective rotational bands were observed for the first time in neutron-rich odd–odd 142 La by means of γ-γ-γ and γ-γ-γ-γ coincidence measurements of prompt fission γ rays from 252 Cf using multi-detector array Gammasphere. Similarity between the yrast band of 142 La and those of neighboring 144 La, 144 Ce was found and interpreted as quasiparticle excitations. Here, PES calculations suggested triaxial deformation for the ground state of 142La. Considerable triaxial and near zero octupole deformations were deduced for the yrast band of 142 La by the TRS model calculations. The band-crossing observed in the yrast band of 142 La was interpreted to be caused by alignment of the (h 11/2 ) 2 proton pair, and the crossing frequency was best reproduced by the TRS calculations taking into account triaxial deformations. In contrast to the interpretations for the band crossing of 142 La, alignments of the (i 13/2 ) 2 neutron pair were found to be responsible for the band-crossing of the yrast band in the neighboring even-N 143 La, and triaxial degree of freedom was found to play a more significant role than octupole deformations in the nucleus, although its β 3 values deduced are large.
Erratum: Possible octupole correlation in 147 Pr and πh 11/2 bands in 149,151 P [Phys. Rev. C 62 , 044303 (2000)]
Here, in this erratum to our publication, [Phys. Rev. C 62,044303 (2000)], we report the corrections to the previous level scheme of 147,151 Pr and the physical influence of those changes and other typos in the original paper.