Anomalous band-crossings in the N=57 isotones 103Pd and 105Cd

P. H. Regan; G. D. Dracoulis; G. J. Lane; P. M. Walker; S. S. Anderssen; A. P. Byrne; P. M. Davidson; T. Kibedi; A. E. Stuchbery; K. C. Yeung

doi:10.1088/0954-3899/19/11/002

Anomalous band-crossings in the N=57 isotones ¹⁰³Pd and ¹⁰⁵Cd

P. H. Regan^*
, G. D. Dracoulis
, G. J. Lane
, P. M. Walker
, S. S. Anderssen
, A. P. Byrne
, P. M. Davidson
, T. Kibedi
, A. E. Stuchbery
, K. C. Yeung

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

27 Citations (Scopus)

Abstract

High-spin states of the N=57 isotones, ¹⁰³Pd and ¹⁰⁵Cd, have been studied using the reactions ⁹⁴Zr( ¹⁶O, alpha 3n)¹⁰³Pd and ⁹⁴Zr( ¹⁶O,5n)¹⁰⁵Cd. The nu h_11/2 yrast bands in both nuclei are extended up to spin 47/2h(cross), past the first band-crossing. The observed increase in alignment in both bands is significantly lower than in analogous bands in the heavier odd-N isotopes, where the alignment is thought to be due to a pair of low- Omega h_11/2 neutrons. The relatively low increase in alignment in ¹⁰³Pd and ¹⁰⁵Cd is consistent with cranked shell model calculations which predict that at low deformation both the (g_9/2)² proton and the (g_7/2)² neutron alignments are favoured in these N=57 isotones, over the (h _11/2)² neutron alignment.

Original language	English
Article number	002
Pages (from-to)	L157-L162
Journal	Journal of Physics G: Nuclear and Particle Physics
Volume	19
Issue number	11
DOIs	https://doi.org/10.1088/0954-3899/19/11/002
Publication status	Published - 1993

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@article{53321b3b8628428ab3aab320df53f5e0,

title = "Anomalous band-crossings in the N=57 isotones 103Pd and 105Cd",

abstract = "High-spin states of the N=57 isotones, 103Pd and 105Cd, have been studied using the reactions 94Zr( 16O, alpha 3n)103Pd and 94Zr( 16O,5n)105Cd. The nu h11/2 yrast bands in both nuclei are extended up to spin 47/2h(cross), past the first band-crossing. The observed increase in alignment in both bands is significantly lower than in analogous bands in the heavier odd-N isotopes, where the alignment is thought to be due to a pair of low- Omega h11/2 neutrons. The relatively low increase in alignment in 103Pd and 105Cd is consistent with cranked shell model calculations which predict that at low deformation both the (g9/2)2 proton and the (g7/2)2 neutron alignments are favoured in these N=57 isotones, over the (h 11/2)2 neutron alignment.",

author = "Regan, \{P. H.\} and Dracoulis, \{G. D.\} and Lane, \{G. J.\} and Walker, \{P. M.\} and Anderssen, \{S. S.\} and Byrne, \{A. P.\} and Davidson, \{P. M.\} and T. Kibedi and Stuchbery, \{A. E.\} and Yeung, \{K. C.\}",

year = "1993",

doi = "10.1088/0954-3899/19/11/002",

language = "English",

volume = "19",

pages = "L157--L162",

journal = "Journal of Physics G: Nuclear and Particle Physics",

issn = "0954-3899",

publisher = "IOP Publishing Ltd.",

number = "11",

}

TY - JOUR

T1 - Anomalous band-crossings in the N=57 isotones 103Pd and 105Cd

AU - Regan, P. H.

AU - Dracoulis, G. D.

AU - Lane, G. J.

AU - Walker, P. M.

AU - Anderssen, S. S.

AU - Byrne, A. P.

AU - Davidson, P. M.

AU - Kibedi, T.

AU - Stuchbery, A. E.

AU - Yeung, K. C.

PY - 1993

Y1 - 1993

N2 - High-spin states of the N=57 isotones, 103Pd and 105Cd, have been studied using the reactions 94Zr( 16O, alpha 3n)103Pd and 94Zr( 16O,5n)105Cd. The nu h11/2 yrast bands in both nuclei are extended up to spin 47/2h(cross), past the first band-crossing. The observed increase in alignment in both bands is significantly lower than in analogous bands in the heavier odd-N isotopes, where the alignment is thought to be due to a pair of low- Omega h11/2 neutrons. The relatively low increase in alignment in 103Pd and 105Cd is consistent with cranked shell model calculations which predict that at low deformation both the (g9/2)2 proton and the (g7/2)2 neutron alignments are favoured in these N=57 isotones, over the (h 11/2)2 neutron alignment.

AB - High-spin states of the N=57 isotones, 103Pd and 105Cd, have been studied using the reactions 94Zr( 16O, alpha 3n)103Pd and 94Zr( 16O,5n)105Cd. The nu h11/2 yrast bands in both nuclei are extended up to spin 47/2h(cross), past the first band-crossing. The observed increase in alignment in both bands is significantly lower than in analogous bands in the heavier odd-N isotopes, where the alignment is thought to be due to a pair of low- Omega h11/2 neutrons. The relatively low increase in alignment in 103Pd and 105Cd is consistent with cranked shell model calculations which predict that at low deformation both the (g9/2)2 proton and the (g7/2)2 neutron alignments are favoured in these N=57 isotones, over the (h 11/2)2 neutron alignment.

UR - https://www.scopus.com/pages/publications/27944457143

U2 - 10.1088/0954-3899/19/11/002

DO - 10.1088/0954-3899/19/11/002

M3 - Article

AN - SCOPUS:27944457143

SN - 0954-3899

VL - 19

SP - L157-L162

JO - Journal of Physics G: Nuclear and Particle Physics

JF - Journal of Physics G: Nuclear and Particle Physics

IS - 11

M1 - 002

ER -

Anomalous band-crossings in the N=57 isotones ¹⁰³Pd and ¹⁰⁵Cd

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