High-spin spectroscopic study of 167Lu

C. H. Yu; G. B. Hagemann; J. M. Espino; K. Furuno; J. D. Garrett; R. Chapman; D. Clarke; F. Khazaie; J. C. Lisle; J. N. Mo; M. Bergström; L. Carlén; P. Ekström; J. Lyttkens; H. Ryde

doi:10.1016/0375-9474(90)90031-G

High-spin spectroscopic study of ¹⁶⁷Lu

C. H. Yu
, G. B. Hagemann
, J. M. Espino
, K. Furuno
, J. D. Garrett
, R. Chapman
, D. Clarke
, F. Khazaie
, J. C. Lisle
, J. N. Mo
, M. Bergström
, L. Carlén
, P. Ekström
, J. Lyttkens
, H. Ryde

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

62 Scopus citations

Abstract

Three decay sequences associated with the 7 2⁺[404], 9 2^-[514] and 1 2^-[541] Nilsson states of ¹⁶⁷Lu have been established to high spin using the ¹²³Sb(⁴⁸Ca,4n)¹⁶⁷Lu reaction. The quasineutron and quasiproton band crossings, the energy signature splittings, and the B(M1)/B(E2) values are discussed and compared with similar quantities for the lighter lutetium isotopes. Configuration-and isotopic-dependent deformations, reflected in such comparisons, indicate that ¹⁶⁷Lu has a larger and more stable prolate deformation than the lighter isotopes and that the 1 2^-[541] configuration has a larger quadrupole deformation than the 9 2^-[514] configuration. The shift of the AB neutron band crossing occurring in the 1 2^-[541] sequences to a larger rotational frequency cannot be understood in terms only of deformation differences. The configuration and neutron-number dependent shapes are also discussed in a "gauge"-space analysis.

Original language	English
Pages (from-to)	157-194
Number of pages	38
Journal	Nuclear Physics A
Volume	511
Issue number	1
DOIs	https://doi.org/10.1016/0375-9474(90)90031-G
State	Published - Apr 30 1990
Externally published	Yes

Funding

the State Education Commission of China for the receipt of an overseasp ostgraduate scholarship during this work and support from the Department of Physics, University of Tennessee, USA. JME acknowledges support from the Spanish “Comision Interministerial de Ciencia y Tecnologia” (CICYT), project PB86-0318. Discussions with I. Hamamoto, J. Nyberg, D. Radford, S. Ogaza, and J.-Y. Zhang are acknowledged. This work was supported by the Danish Natural Science Foundation, the UK Science and Engineering Research Council, the European Economic Community Stimulation Programme (The ESSA30 Collaboration, contract number ST2J-0205), the NORDBALL Collaboration, the Nordic Council for Accelerator Based Research, and the U.S. Department of Energy. Oak Ridge National Laboratory is operated by Martin Marietta Energy Systems Inc. for the US Department of Energy under Contract No. DE-AC05-840R21400. C.-H. Yu acknowledges

Keywords

Nuclear Reactions

Access to Document

10.1016/0375-9474(90)90031-G

Cite this

@article{f0fbd7efbde84bfaa9b0d297d77a1a6d,

title = "High-spin spectroscopic study of 167Lu",

abstract = "Three decay sequences associated with the 7 2+[404], 9 2-[514] and 1 2-[541] Nilsson states of 167Lu have been established to high spin using the 123Sb(48Ca,4n)167Lu reaction. The quasineutron and quasiproton band crossings, the energy signature splittings, and the B(M1)/B(E2) values are discussed and compared with similar quantities for the lighter lutetium isotopes. Configuration-and isotopic-dependent deformations, reflected in such comparisons, indicate that 167Lu has a larger and more stable prolate deformation than the lighter isotopes and that the 1 2-[541] configuration has a larger quadrupole deformation than the 9 2-[514] configuration. The shift of the AB neutron band crossing occurring in the 1 2-[541] sequences to a larger rotational frequency cannot be understood in terms only of deformation differences. The configuration and neutron-number dependent shapes are also discussed in a {"}gauge{"}-space analysis.",

keywords = "Nuclear Reactions",

author = "Yu, \{C. H.\} and Hagemann, \{G. B.\} and Espino, \{J. M.\} and K. Furuno and Garrett, \{J. D.\} and R. Chapman and D. Clarke and F. Khazaie and Lisle, \{J. C.\} and Mo, \{J. N.\} and M. Bergstr{\"o}m and L. Carl{\'e}n and P. Ekstr{\"o}m and J. Lyttkens and H. Ryde",

year = "1990",

month = apr,

day = "30",

doi = "10.1016/0375-9474(90)90031-G",

language = "English",

volume = "511",

pages = "157--194",

journal = "Nuclear Physics A",

issn = "0375-9474",

publisher = "Elsevier",

number = "1",

}

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T1 - High-spin spectroscopic study of 167Lu

AU - Yu, C. H.

AU - Hagemann, G. B.

AU - Espino, J. M.

AU - Furuno, K.

AU - Garrett, J. D.

AU - Chapman, R.

AU - Clarke, D.

AU - Khazaie, F.

AU - Lisle, J. C.

AU - Mo, J. N.

AU - Bergström, M.

AU - Carlén, L.

AU - Ekström, P.

AU - Lyttkens, J.

AU - Ryde, H.

PY - 1990/4/30

Y1 - 1990/4/30

N2 - Three decay sequences associated with the 7 2+[404], 9 2-[514] and 1 2-[541] Nilsson states of 167Lu have been established to high spin using the 123Sb(48Ca,4n)167Lu reaction. The quasineutron and quasiproton band crossings, the energy signature splittings, and the B(M1)/B(E2) values are discussed and compared with similar quantities for the lighter lutetium isotopes. Configuration-and isotopic-dependent deformations, reflected in such comparisons, indicate that 167Lu has a larger and more stable prolate deformation than the lighter isotopes and that the 1 2-[541] configuration has a larger quadrupole deformation than the 9 2-[514] configuration. The shift of the AB neutron band crossing occurring in the 1 2-[541] sequences to a larger rotational frequency cannot be understood in terms only of deformation differences. The configuration and neutron-number dependent shapes are also discussed in a "gauge"-space analysis.

AB - Three decay sequences associated with the 7 2+[404], 9 2-[514] and 1 2-[541] Nilsson states of 167Lu have been established to high spin using the 123Sb(48Ca,4n)167Lu reaction. The quasineutron and quasiproton band crossings, the energy signature splittings, and the B(M1)/B(E2) values are discussed and compared with similar quantities for the lighter lutetium isotopes. Configuration-and isotopic-dependent deformations, reflected in such comparisons, indicate that 167Lu has a larger and more stable prolate deformation than the lighter isotopes and that the 1 2-[541] configuration has a larger quadrupole deformation than the 9 2-[514] configuration. The shift of the AB neutron band crossing occurring in the 1 2-[541] sequences to a larger rotational frequency cannot be understood in terms only of deformation differences. The configuration and neutron-number dependent shapes are also discussed in a "gauge"-space analysis.

KW - Nuclear Reactions

UR - https://www.scopus.com/pages/publications/0001206087

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DO - 10.1016/0375-9474(90)90031-G

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