Low-lying levels, γ-ray transitions, and vibrational structure in 198Pt from (n, n'γ) reaction spectroscopy

S. W. Yates; A. Khan; A. J. Filo; M. C. Mirzaa; J. L. Weil; M. T. McEllistrem

doi:10.1016/0375-9474(83)90374-3

Low-lying levels, γ-ray transitions, and vibrational structure in ¹⁹⁸Pt from (n, n'γ) reaction spectroscopy

S. W. Yates, A. Khan, A. J. Filo, M. C. Mirzaa, J. L. Weil, M. T. McEllistrem

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

14 Scopus citations

Abstract

Low-lying states in ¹⁹⁸Pt have been studied by (n, n'γ) reaction spectroscopy at incident neutron energies below 2.5 MeV. Using detailed γ-ray excitation functions and angular distribution measurements, we have established a level scheme which includes 16 excited levels and is believed to include all levels below an excitation energy of 1.5 MeV. The positive-parity structure is similar to that expected for an anharmonic vibrator; however, difficulties in asserting that the first 0⁺ excited level is a collective excitation are encountered. Only two negative-parity states are observed, and they are adequately described in the semi-decoupled model.

Original language	English
Pages (from-to)	519-532
Number of pages	14
Journal	Nuclear Physics, Section A
Volume	406
Issue number	3
DOIs	https://doi.org/10.1016/0375-9474(83)90374-3
State	Published - Sep 26 1983

Bibliographical note

Funding Information:
We are grateful to R. Bijker, H. H. Bolotin, R. F. Casten, J. A. Cizewski, P. T. Deason, F. Iachello, I. Y. Lee, R. M. Ronningen, T. Tamura, K. J. Weeks and J. L. Wood for valuable discussions and communications. We acknowledge B. Perraut for his continuing contributions to our experiments and E. D. Kleppinger for his help with the data analysis. This work was partially supported by the US Department of Energy under Contract DE-AS05-79ER10365 and the National Science Foundation under Grant No. PHY-8105572.

Keywords

Nuclear reactions

ASJC Scopus subject areas

Nuclear and High Energy Physics

Access to Document

10.1016/0375-9474(83)90374-3

Cite this

@article{fa7ac6d64bfd418f8d2c4f5b7c6a21a0,

title = "Low-lying levels, γ-ray transitions, and vibrational structure in 198Pt from (n, n'γ) reaction spectroscopy",

abstract = "Low-lying states in 198Pt have been studied by (n, n'γ) reaction spectroscopy at incident neutron energies below 2.5 MeV. Using detailed γ-ray excitation functions and angular distribution measurements, we have established a level scheme which includes 16 excited levels and is believed to include all levels below an excitation energy of 1.5 MeV. The positive-parity structure is similar to that expected for an anharmonic vibrator; however, difficulties in asserting that the first 0+ excited level is a collective excitation are encountered. Only two negative-parity states are observed, and they are adequately described in the semi-decoupled model.",

keywords = "Nuclear reactions",

author = "Yates, {S. W.} and A. Khan and Filo, {A. J.} and Mirzaa, {M. C.} and Weil, {J. L.} and McEllistrem, {M. T.}",

note = "Funding Information: We are grateful to R. Bijker, H. H. Bolotin, R. F. Casten, J. A. Cizewski, P. T. Deason, F. Iachello, I. Y. Lee, R. M. Ronningen, T. Tamura, K. J. Weeks and J. L. Wood for valuable discussions and communications. We acknowledge B. Perraut for his continuing contributions to our experiments and E. D. Kleppinger for his help with the data analysis. This work was partially supported by the US Department of Energy under Contract DE-AS05-79ER10365 and the National Science Foundation under Grant No. PHY-8105572.",

year = "1983",

month = sep,

day = "26",

doi = "10.1016/0375-9474(83)90374-3",

language = "English",

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pages = "519--532",

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TY - JOUR

T1 - Low-lying levels, γ-ray transitions, and vibrational structure in 198Pt from (n, n'γ) reaction spectroscopy

AU - Yates, S. W.

AU - Khan, A.

AU - Filo, A. J.

AU - Mirzaa, M. C.

AU - Weil, J. L.

AU - McEllistrem, M. T.

N1 - Funding Information: We are grateful to R. Bijker, H. H. Bolotin, R. F. Casten, J. A. Cizewski, P. T. Deason, F. Iachello, I. Y. Lee, R. M. Ronningen, T. Tamura, K. J. Weeks and J. L. Wood for valuable discussions and communications. We acknowledge B. Perraut for his continuing contributions to our experiments and E. D. Kleppinger for his help with the data analysis. This work was partially supported by the US Department of Energy under Contract DE-AS05-79ER10365 and the National Science Foundation under Grant No. PHY-8105572.

PY - 1983/9/26

Y1 - 1983/9/26

N2 - Low-lying states in 198Pt have been studied by (n, n'γ) reaction spectroscopy at incident neutron energies below 2.5 MeV. Using detailed γ-ray excitation functions and angular distribution measurements, we have established a level scheme which includes 16 excited levels and is believed to include all levels below an excitation energy of 1.5 MeV. The positive-parity structure is similar to that expected for an anharmonic vibrator; however, difficulties in asserting that the first 0+ excited level is a collective excitation are encountered. Only two negative-parity states are observed, and they are adequately described in the semi-decoupled model.

AB - Low-lying states in 198Pt have been studied by (n, n'γ) reaction spectroscopy at incident neutron energies below 2.5 MeV. Using detailed γ-ray excitation functions and angular distribution measurements, we have established a level scheme which includes 16 excited levels and is believed to include all levels below an excitation energy of 1.5 MeV. The positive-parity structure is similar to that expected for an anharmonic vibrator; however, difficulties in asserting that the first 0+ excited level is a collective excitation are encountered. Only two negative-parity states are observed, and they are adequately described in the semi-decoupled model.

KW - Nuclear reactions

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