Collective Band Structures and Identification of One-Phonon and Two-Phonon γ-Vibrational Bands in 109Tc
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GU Long,
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ZHU Sheng-Jiang,
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J. H. Hamilton,
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A. V. Ramayya,
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J. K. Hwang,
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S. H. Liu,
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WANG Jian-Guo,
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Y. X. Luo,
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J. O. Rasmussen,
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I. Y. Lee,
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XU Qiang,
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E. Y. Yeoh,
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W. C. Ma
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Abstract
The high spin states of the neutron-rich 109Tc nucleus are reinvestigated by observing prompt γ-rays from the spontaneous fission of 252Cf. The previously known yrast band based on the 7/2+ state is updated. A side band built on the 11/2+ state is expanded and a new band based on the 15/2+ state is identified. Band crossing in the yrast band occurs around ≈0.36 MeV. This band crossing is associated with the alignment of two h11/2 neutrons according to the cranked shell model calculations. The band based on the 11/2+ state is proposed as a candidate for the one-phonon γ-vibrational band, and the band built on the 15/2+ state is proposed as a candidate for the two-phonon γ-vibrational band. Other characteristics for the observed bands are discussed.
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Cite this article:
GU Long, ZHU Sheng-Jiang, J. H. Hamilton, A. V. Ramayya, J. K. Hwang, S. H. Liu, WANG Jian-Guo, Y. X. Luo, J. O. Rasmussen, I. Y. Lee, XU Qiang, E. Y. Yeoh, W. C. Ma. Collective Band Structures and Identification of One-Phonon and Two-Phonon γ-Vibrational Bands in 109Tc[J].
Chin. Phys. Lett., 2010, 27(6): 062501.
DOI: 10.1088/0256-307X/27/6/062501
GU Long, ZHU Sheng-Jiang, J. H. Hamilton, A. V. Ramayya, J. K. Hwang, S. H. Liu, WANG Jian-Guo, Y. X. Luo, J. O. Rasmussen, I. Y. Lee, XU Qiang, E. Y. Yeoh, W. C. Ma. Collective Band Structures and Identification of One-Phonon and Two-Phonon γ-Vibrational Bands in 109Tc[J]. Chin. Phys. Lett., 2010, 27(6): 062501. DOI: 10.1088/0256-307X/27/6/062501
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GU Long, ZHU Sheng-Jiang, J. H. Hamilton, A. V. Ramayya, J. K. Hwang, S. H. Liu, WANG Jian-Guo, Y. X. Luo, J. O. Rasmussen, I. Y. Lee, XU Qiang, E. Y. Yeoh, W. C. Ma. Collective Band Structures and Identification of One-Phonon and Two-Phonon γ-Vibrational Bands in 109Tc[J]. Chin. Phys. Lett., 2010, 27(6): 062501. DOI: 10.1088/0256-307X/27/6/062501
GU Long, ZHU Sheng-Jiang, J. H. Hamilton, A. V. Ramayya, J. K. Hwang, S. H. Liu, WANG Jian-Guo, Y. X. Luo, J. O. Rasmussen, I. Y. Lee, XU Qiang, E. Y. Yeoh, W. C. Ma. Collective Band Structures and Identification of One-Phonon and Two-Phonon γ-Vibrational Bands in 109Tc[J]. Chin. Phys. Lett., 2010, 27(6): 062501. DOI: 10.1088/0256-307X/27/6/062501
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