The structure of the deformed nucleus42103Mo61
(1993) In Zeitschrift für Physik A Hadrons and Nuclei 346(2). p.101-109- Abstract
The lifetimes of the three lowest excited members of the rotational ground-state band of103Mo at 102.6, 241.1 and 433.2 keV as well as of the levels at 353.8 and 456.1 keV have been determined through a measurement of the delayed coincidences between β particles from the decay of the parent103Nb and the γ rays which depopulate the levels. A plastic and a BaF2 detector have been used for the β and γ rays, respectively, in these experiments at the fission product separator JOSEF. The results for all three band members evince that this nucleus has a sizeable deformation, with a value of βq=0.34(1). This value is larger than that of the neighbouring even-even Mo isotopes which indicates an... (More)
The lifetimes of the three lowest excited members of the rotational ground-state band of103Mo at 102.6, 241.1 and 433.2 keV as well as of the levels at 353.8 and 456.1 keV have been determined through a measurement of the delayed coincidences between β particles from the decay of the parent103Nb and the γ rays which depopulate the levels. A plastic and a BaF2 detector have been used for the β and γ rays, respectively, in these experiments at the fission product separator JOSEF. The results for all three band members evince that this nucleus has a sizeable deformation, with a value of βq=0.34(1). This value is larger than that of the neighbouring even-even Mo isotopes which indicates an odd-even effect. On the other hand it confirms the observation that the Mo nuclei are in general less strongly deformed than their Sr and Zr isotones. Particle-rotor model calculations with the Nilsson parameters κ=0.084, μ=0.28 provide a good description of the ground-state band and of a side band based on the 346.5 keV level, including the new lifetimes. This substantiates the Nilsson orbital assignments of [411]3/2+ and [532]5/2- for these two bands, respectively, where the sideband is strongly affected by a [541]3/2- admixture. There is evidence for an additional band based on the 641.1 keV level for which the assignment [422]3/2+ is proposed.
(Less)
- author
- Liang, M. ; Ohm, H. ; Ragnarsson, I. LU and Sistemich, K.
- organization
- publishing date
- 1993-06
- type
- Contribution to journal
- publication status
- published
- subject
- keywords
- 21.60.EV, 23.20.Ck, 27.60.+j
- in
- Zeitschrift für Physik A Hadrons and Nuclei
- volume
- 346
- issue
- 2
- pages
- 9 pages
- publisher
- Springer
- external identifiers
-
- scopus:0001617234
- ISSN
- 0939-7922
- DOI
- 10.1007/BF01294625
- language
- English
- LU publication?
- yes
- id
- 7c6280e5-e7b2-464d-bb84-8e1ef0465bc9
- date added to LUP
- 2026-01-15 10:56:52
- date last changed
- 2026-01-27 10:51:02
@article{7c6280e5-e7b2-464d-bb84-8e1ef0465bc9,
abstract = {{<p>The lifetimes of the three lowest excited members of the rotational ground-state band of<sup>103</sup>Mo at 102.6, 241.1 and 433.2 keV as well as of the levels at 353.8 and 456.1 keV have been determined through a measurement of the delayed coincidences between β particles from the decay of the parent<sup>103</sup>Nb and the γ rays which depopulate the levels. A plastic and a BaF<sub>2</sub> detector have been used for the β and γ rays, respectively, in these experiments at the fission product separator JOSEF. The results for all three band members evince that this nucleus has a sizeable deformation, with a value of β<sub>q</sub>=0.34(1). This value is larger than that of the neighbouring even-even Mo isotopes which indicates an odd-even effect. On the other hand it confirms the observation that the Mo nuclei are in general less strongly deformed than their Sr and Zr isotones. Particle-rotor model calculations with the Nilsson parameters κ=0.084, μ=0.28 provide a good description of the ground-state band and of a side band based on the 346.5 keV level, including the new lifetimes. This substantiates the Nilsson orbital assignments of [411]3/2<sup>+</sup> and [532]5/2<sup>-</sup> for these two bands, respectively, where the sideband is strongly affected by a [541]3/2<sup>-</sup> admixture. There is evidence for an additional band based on the 641.1 keV level for which the assignment [422]3/2<sup>+</sup> is proposed.</p>}},
author = {{Liang, M. and Ohm, H. and Ragnarsson, I. and Sistemich, K.}},
issn = {{0939-7922}},
keywords = {{21.60.EV; 23.20.Ck; 27.60.+j}},
language = {{eng}},
number = {{2}},
pages = {{101--109}},
publisher = {{Springer}},
series = {{Zeitschrift für Physik A Hadrons and Nuclei}},
title = {{The structure of the deformed nucleus<sub>42</sub><sup>103</sup>Mo<sub>61</sub>}},
url = {{http://dx.doi.org/10.1007/BF01294625}},
doi = {{10.1007/BF01294625}},
volume = {{346}},
year = {{1993}},
}