Gamma-ray spectroscopy of 126Ba

D. Ward; V. P. Janzen; H. R. Andrews; D. C. Radford; G. C. Ball; D. Horn; J. C. Waddington; J. K. Johansson; F. Banville; J. Gascon; S. Monaro; N. Nadon; S. Pilotte; D. Prevost; P. Taras; R. Wyss

doi:10.1016/0375-9474(91)90798-B

Gamma-ray spectroscopy of ¹²⁶Ba

D. Ward
, V. P. Janzen
, H. R. Andrews
, D. C. Radford
, G. C. Ball
, D. Horn
, J. C. Waddington
, J. K. Johansson
, F. Banville
, J. Gascon
, S. Monaro
, N. Nadon
, S. Pilotte
, D. Prevost
, P. Taras
, R. Wyss

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

75 Scopus citations

Abstract

States of ¹²⁶Ba up to spin 36⁺ were populated in the reaction ⁹⁶Zr(³⁴S, 4n)¹²⁶Ba at 155 MeV and up to spin 20⁺ in the reaction ¹¹⁶Sn(¹³C, 3n)¹²⁶Ba at 56 MeV. Gamma-ray spectroscopy was performed with the 8π spectrometer, an instrument comprising 20 Campton-suppressed HPGe detectors and 71 BGO ball elements. A level scheme organized into fifteen rotational bands is proposed on the basis on the γγ-coincidence and γ-ray angular correlation data. The competing πh_{11 2} and vh_{11 2} band crossings are investigated and interpreted in terms of cranked shell model and total routhian surface calculations. Amongst the topics discussed are (i) a comparison of DCO and spin orientation techniques for determining spins and multipolarities. (ii) the addivity property of quasiparticle energies or routhians, and (iii) analysis of B(M1)/B(E2, ratios between signature partner bands. The possibility of couplings between vibrational and aligned quasiparticle structures is explored.

Original language	English
Pages (from-to)	315-362
Number of pages	48
Journal	Nuclear Physics A
Volume	529
Issue number	2
DOIs	https://doi.org/10.1016/0375-9474(91)90798-B
State	Published - Jul 8 1991
Externally published	Yes

Funding

Thisworkwasinpart(Université de Montréal and McMaster University) supported by the Natural Sciences and Engineering Research Council ofCanada. One of us (R.W .) acknowledges a fellowship from the Swedish Natural Science Council . Discussions with W . Nazarewicz, M. Mazuzaki and A . Johnson are gratefully acknow dged.

Keywords

Nuclear reactions

Access to Document

10.1016/0375-9474(91)90798-B

Cite this

@article{9b050f1c52874e13a52be3f2538da322,

title = "Gamma-ray spectroscopy of 126Ba",

abstract = "States of 126Ba up to spin 36+ were populated in the reaction 96Zr(34S, 4n)126Ba at 155 MeV and up to spin 20+ in the reaction 116Sn(13C, 3n)126Ba at 56 MeV. Gamma-ray spectroscopy was performed with the 8π spectrometer, an instrument comprising 20 Campton-suppressed HPGe detectors and 71 BGO ball elements. A level scheme organized into fifteen rotational bands is proposed on the basis on the γγ-coincidence and γ-ray angular correlation data. The competing πh 11 2 and vh 11 2 band crossings are investigated and interpreted in terms of cranked shell model and total routhian surface calculations. Amongst the topics discussed are (i) a comparison of DCO and spin orientation techniques for determining spins and multipolarities. (ii) the addivity property of quasiparticle energies or routhians, and (iii) analysis of B(M1)/B(E2, ratios between signature partner bands. The possibility of couplings between vibrational and aligned quasiparticle structures is explored.",

keywords = "Nuclear reactions",

author = "D. Ward and Janzen, \{V. P.\} and Andrews, \{H. R.\} and Radford, \{D. C.\} and Ball, \{G. C.\} and D. Horn and Waddington, \{J. C.\} and Johansson, \{J. K.\} and F. Banville and J. Gascon and S. Monaro and N. Nadon and S. Pilotte and D. Prevost and P. Taras and R. Wyss",

year = "1991",

month = jul,

day = "8",

doi = "10.1016/0375-9474(91)90798-B",

language = "English",

volume = "529",

pages = "315--362",

journal = "Nuclear Physics A",

issn = "0375-9474",

publisher = "Elsevier",

number = "2",

}

TY - JOUR

T1 - Gamma-ray spectroscopy of 126Ba

AU - Ward, D.

AU - Janzen, V. P.

AU - Andrews, H. R.

AU - Radford, D. C.

AU - Ball, G. C.

AU - Horn, D.

AU - Waddington, J. C.

AU - Johansson, J. K.

AU - Banville, F.

AU - Gascon, J.

AU - Monaro, S.

AU - Nadon, N.

AU - Pilotte, S.

AU - Prevost, D.

AU - Taras, P.

AU - Wyss, R.

PY - 1991/7/8

Y1 - 1991/7/8

N2 - States of 126Ba up to spin 36+ were populated in the reaction 96Zr(34S, 4n)126Ba at 155 MeV and up to spin 20+ in the reaction 116Sn(13C, 3n)126Ba at 56 MeV. Gamma-ray spectroscopy was performed with the 8π spectrometer, an instrument comprising 20 Campton-suppressed HPGe detectors and 71 BGO ball elements. A level scheme organized into fifteen rotational bands is proposed on the basis on the γγ-coincidence and γ-ray angular correlation data. The competing πh 11 2 and vh 11 2 band crossings are investigated and interpreted in terms of cranked shell model and total routhian surface calculations. Amongst the topics discussed are (i) a comparison of DCO and spin orientation techniques for determining spins and multipolarities. (ii) the addivity property of quasiparticle energies or routhians, and (iii) analysis of B(M1)/B(E2, ratios between signature partner bands. The possibility of couplings between vibrational and aligned quasiparticle structures is explored.

AB - States of 126Ba up to spin 36+ were populated in the reaction 96Zr(34S, 4n)126Ba at 155 MeV and up to spin 20+ in the reaction 116Sn(13C, 3n)126Ba at 56 MeV. Gamma-ray spectroscopy was performed with the 8π spectrometer, an instrument comprising 20 Campton-suppressed HPGe detectors and 71 BGO ball elements. A level scheme organized into fifteen rotational bands is proposed on the basis on the γγ-coincidence and γ-ray angular correlation data. The competing πh 11 2 and vh 11 2 band crossings are investigated and interpreted in terms of cranked shell model and total routhian surface calculations. Amongst the topics discussed are (i) a comparison of DCO and spin orientation techniques for determining spins and multipolarities. (ii) the addivity property of quasiparticle energies or routhians, and (iii) analysis of B(M1)/B(E2, ratios between signature partner bands. The possibility of couplings between vibrational and aligned quasiparticle structures is explored.

KW - Nuclear reactions

UR - https://www.scopus.com/pages/publications/10144234625

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DO - 10.1016/0375-9474(91)90798-B

M3 - Article

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VL - 529

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JO - Nuclear Physics A

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