Band termination spectroscopy in <sup>157</sup>Er

Gale, S. J.; Simpson, J.; Riley, M. A.; Sharpey-Schafer, J. F.; Paul, E. S.; Bentley, M. A.; Bruce, A. M.; Chapman, R.; Clark, R. M.; Clarke, S.; Copnell, J.; Cullen, D. M.; Fallon, P.; Fitzpatrick, A.; Forsyth, P. D.; Freeman, S. J.; Jones, P. M.; Joyce, M. J.; Liden, F.; Lisle, J. C.; MacChiavellio, A. O.; Smith, A. G.; Smith, J.; Sweeney, J.; Thompson, D. M.; Warburton, S.; Wilson, J. N.; Ragnarsson, I.

Band termination spectroscopy in ¹⁵⁷Er

Mark

Gale, S. J. ; Simpson, J. ; Riley, M. A. ; Sharpey-Schafer, J. F. ; Paul, E. S. ^LU ; Bentley, M. A. ; Bruce, A. M. ; Chapman, R. ; Clark, R. M. and Clarke, S. , et al. (1995) In Journal of Physics G: Nuclear and Particle Physics 21(2). p.193-213

Abstract: The level scheme of ¹⁵⁷Er has been extended from a spin region where the nucleus behaves as a prolate rotor to a region where the spin is produced by the alignment of all or most of the available valence nucleons along the symmetry axis of a weakly deformed oblate shape. The level scheme was established at high spin using up to four-fold gamma -ray coincidences detected in the Eurogam spectrometer following the reaction ¹¹⁴Cd( ⁴⁸Ca,5n)¹⁵⁷Er at a bombarding energy of 210 MeV. Particularly favoured states have been established at I^K=69/2+, 81/2+, 71/2+, 77/2-, 87-/2 and 89-/2. Specific single-particle configurations are assigned to these special states by comparison with cranked... (More); The level scheme of ¹⁵⁷Er has been extended from a spin region where the nucleus behaves as a prolate rotor to a region where the spin is produced by the alignment of all or most of the available valence nucleons along the symmetry axis of a weakly deformed oblate shape. The level scheme was established at high spin using up to four-fold gamma -ray coincidences detected in the Eurogam spectrometer following the reaction ¹¹⁴Cd( ⁴⁸Ca,5n)¹⁵⁷Er at a bombarding energy of 210 MeV. Particularly favoured states have been established at I^K=69/2+, 81/2+, 71/2+, 77/2-, 87-/2 and 89-/2. Specific single-particle configurations are assigned to these special states by comparison with cranked Nilsson-Strutinsky calculations. These states are related to structures observed in the neighbouring nuclei ¹⁵⁸Er and ¹⁵⁷Ho. These data provide the spectrum of single-particle states for the lowest lying valence orbitals above the ¹⁴⁶Gd closed core.
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Please use this url to cite or link to this publication: https://lup.lub.lu.se/record/a437c627-01b7-441a-9853-8f6f47d729de

author

Gale, S. J. ; Simpson, J. ; Riley, M. A. ; Sharpey-Schafer, J. F. ; Paul, E. S. ^LU ; Bentley, M. A. ; Bruce, A. M. ; Chapman, R. ; Clark, R. M. and Clarke, S. , et al. (More)

Gale, S. J. ; Simpson, J. ; Riley, M. A. ; Sharpey-Schafer, J. F. ; Paul, E. S. ^LU ; Bentley, M. A. ; Bruce, A. M. ; Chapman, R. ; Clark, R. M. ; Clarke, S. ; Copnell, J. ; Cullen, D. M. ; Fallon, P. ; Fitzpatrick, A. ; Forsyth, P. D. ; Freeman, S. J. ; Jones, P. M. ; Joyce, M. J. ; Liden, F. ; Lisle, J. C. ; MacChiavellio, A. O. ; Smith, A. G. ; Smith, J. ; Sweeney, J. ; Thompson, D. M. ; Warburton, S. ; Wilson, J. N. and Ragnarsson, I. ^LU (Less)

organization

Mathematical Physics

publishing date

1995

type

Contribution to journal

publication status

published

subject

Atom and Molecular Physics and Optics

in

Journal of Physics G: Nuclear and Particle Physics

volume

21

issue

2

article number

007

pages

21 pages

publisher

IOP Publishing

external identifiers

scopus:0011408114

ISSN

0954-3899

DOI

10.1088/0954-3899/21/2/007

language

English

LU publication?

yes

id

a437c627-01b7-441a-9853-8f6f47d729de

date added to LUP

2023-12-06 13:32:30

date last changed

2023-12-06 13:32:30

@article{a437c627-01b7-441a-9853-8f6f47d729de,
  abstract     = {{<p>The level scheme of <sup>157</sup>Er has been extended from a spin region where the nucleus behaves as a prolate rotor to a region where the spin is produced by the alignment of all or most of the available valence nucleons along the symmetry axis of a weakly deformed oblate shape. The level scheme was established at high spin using up to four-fold gamma -ray coincidences detected in the Eurogam spectrometer following the reaction <sup>114</sup>Cd( <sup>48</sup>Ca,5n)<sup>157</sup>Er at a bombarding energy of 210 MeV. Particularly favoured states have been established at I<sup>K</sup>=69/2+, 81/2+, 71/2+, 77/2-, 87-/2 and 89-/2. Specific single-particle configurations are assigned to these special states by comparison with cranked Nilsson-Strutinsky calculations. These states are related to structures observed in the neighbouring nuclei <sup>158</sup>Er and <sup>157</sup>Ho. These data provide the spectrum of single-particle states for the lowest lying valence orbitals above the <sup>146</sup>Gd closed core.</p>}},
  author       = {{Gale, S. J. and Simpson, J. and Riley, M. A. and Sharpey-Schafer, J. F. and Paul, E. S. and Bentley, M. A. and Bruce, A. M. and Chapman, R. and Clark, R. M. and Clarke, S. and Copnell, J. and Cullen, D. M. and Fallon, P. and Fitzpatrick, A. and Forsyth, P. D. and Freeman, S. J. and Jones, P. M. and Joyce, M. J. and Liden, F. and Lisle, J. C. and MacChiavellio, A. O. and Smith, A. G. and Smith, J. and Sweeney, J. and Thompson, D. M. and Warburton, S. and Wilson, J. N. and Ragnarsson, I.}},
  issn         = {{0954-3899}},
  language     = {{eng}},
  number       = {{2}},
  pages        = {{193--213}},
  publisher    = {{IOP Publishing}},
  series       = {{Journal of Physics G: Nuclear and Particle Physics}},
  title        = {{Band termination spectroscopy in <sup>157</sup>Er}},
  url          = {{http://dx.doi.org/10.1088/0954-3899/21/2/007}},
  doi          = {{10.1088/0954-3899/21/2/007}},
  volume       = {{21}},
  year         = {{1995}},
}

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Band termination spectroscopy in ¹⁵⁷Er