Multi-quasiparticle isomers involving proton-particle and neutron-hole configurations in 131I and 133I

H. Watanabe; K. Ogawa; G. J. Lane; G. D. Dracoulis; A. P. Byrne; P. Nieminen; F. G. Kondev; M. P. Carpenter; R. V.F. Janssens; T. Lauritsen; D. Seweryniak; S. Zhu; P. Chowdhury

doi:10.1142/S0217732310000368

Multi-quasiparticle isomers involving proton-particle and neutron-hole configurations in ¹³¹I and ¹³³I

H. Watanabe^*, K. Ogawa, G. J. Lane, G. D. Dracoulis, A. P. Byrne, P. Nieminen, F. G. Kondev, M. P. Carpenter, R. V.F. Janssens, T. Lauritsen, D. Seweryniak, S. Zhu, P. Chowdhury

^*Corresponding author for this work

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Abstract

The nuclei ¹³¹I and ¹³³I have been populated in multi-nucleon transfer reactions between ¹³⁶Xe ions and various targets, and their structure investigated by time-correlated γ-ray coincidence spectroscopy and the measurement of γ-ray angular correlations. A 19/2^- isomer at 1918 keV, with a half-life of 24(1) s, has been identified in ¹³¹I, as well as nanosecond isomers with J^π = 23/2⁺ in both isotopes. A T_1/2 = 25(3) ns isomer at 4308 keV in ¹³¹I is suggested to have J^π = (31/2^-, 33/2^-) and is primarily attributed to the coupling of an odd proton in the d_5/2 or g_7/2 orbit with the (π²)₀+(νh_11/2^-3d _3/2^-1)₁₅- configuration in ¹³⁰Te, responsible for the 15^- isomer in that nucleus. The observed level properties are compared with predictions of a shell-model calculation.

Original language	English
Pages (from-to)	1800-1803
Number of pages	4
Journal	Modern Physics Letters A
Volume	25
Issue number	21-23
DOIs	https://doi.org/10.1142/S0217732310000368
Publication status	Published - 30 Jul 2010

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Watanabe, H., Ogawa, K., Lane, G. J., Dracoulis, G. D., Byrne, A. P., Nieminen, P., Kondev, F. G., Carpenter, M. P., Janssens, R. V. F., Lauritsen, T., Seweryniak, D., Zhu, S., & Chowdhury, P. (2010). Multi-quasiparticle isomers involving proton-particle and neutron-hole configurations in ¹³¹I and ¹³³I. Modern Physics Letters A, 25(21-23), 1800-1803. https://doi.org/10.1142/S0217732310000368

@article{466acfeb539948c691e896a095e97860,

title = "Multi-quasiparticle isomers involving proton-particle and neutron-hole configurations in 131I and 133I",

abstract = "The nuclei 131I and 133I have been populated in multi-nucleon transfer reactions between 136Xe ions and various targets, and their structure investigated by time-correlated γ-ray coincidence spectroscopy and the measurement of γ-ray angular correlations. A 19/2- isomer at 1918 keV, with a half-life of 24(1) s, has been identified in 131I, as well as nanosecond isomers with Jπ = 23/2+ in both isotopes. A T1/2 = 25(3) ns isomer at 4308 keV in 131I is suggested to have Jπ = (31/2-, 33/2-) and is primarily attributed to the coupling of an odd proton in the d5/2 or g7/2 orbit with the (π2)0+(νh11/2-3d 3/2-1)15- configuration in 130Te, responsible for the 15- isomer in that nucleus. The observed level properties are compared with predictions of a shell-model calculation.",

keywords = "High spin, isomer, shell-model",

author = "H. Watanabe and K. Ogawa and Lane, {G. J.} and Dracoulis, {G. D.} and Byrne, {A. P.} and P. Nieminen and Kondev, {F. G.} and Carpenter, {M. P.} and Janssens, {R. V.F.} and T. Lauritsen and D. Seweryniak and S. Zhu and P. Chowdhury",

year = "2010",

month = jul,

day = "30",

doi = "10.1142/S0217732310000368",

language = "English",

volume = "25",

pages = "1800--1803",

journal = "Modern Physics Letters A",

issn = "0217-7323",

publisher = "World Scientific Publishing Co. Pte Ltd",

number = "21-23",

}

Watanabe, H, Ogawa, K, Lane, GJ, Dracoulis, GD, Byrne, AP, Nieminen, P, Kondev, FG, Carpenter, MP, Janssens, RVF, Lauritsen, T, Seweryniak, D, Zhu, S & Chowdhury, P 2010, 'Multi-quasiparticle isomers involving proton-particle and neutron-hole configurations in ¹³¹I and ¹³³I', Modern Physics Letters A, vol. 25, no. 21-23, pp. 1800-1803. https://doi.org/10.1142/S0217732310000368

TY - JOUR

T1 - Multi-quasiparticle isomers involving proton-particle and neutron-hole configurations in 131I and 133I

AU - Watanabe, H.

AU - Ogawa, K.

AU - Lane, G. J.

AU - Dracoulis, G. D.

AU - Byrne, A. P.

AU - Nieminen, P.

AU - Kondev, F. G.

AU - Carpenter, M. P.

AU - Janssens, R. V.F.

AU - Lauritsen, T.

AU - Seweryniak, D.

AU - Zhu, S.

AU - Chowdhury, P.

PY - 2010/7/30

Y1 - 2010/7/30

N2 - The nuclei 131I and 133I have been populated in multi-nucleon transfer reactions between 136Xe ions and various targets, and their structure investigated by time-correlated γ-ray coincidence spectroscopy and the measurement of γ-ray angular correlations. A 19/2- isomer at 1918 keV, with a half-life of 24(1) s, has been identified in 131I, as well as nanosecond isomers with Jπ = 23/2+ in both isotopes. A T1/2 = 25(3) ns isomer at 4308 keV in 131I is suggested to have Jπ = (31/2-, 33/2-) and is primarily attributed to the coupling of an odd proton in the d5/2 or g7/2 orbit with the (π2)0+(νh11/2-3d 3/2-1)15- configuration in 130Te, responsible for the 15- isomer in that nucleus. The observed level properties are compared with predictions of a shell-model calculation.

AB - The nuclei 131I and 133I have been populated in multi-nucleon transfer reactions between 136Xe ions and various targets, and their structure investigated by time-correlated γ-ray coincidence spectroscopy and the measurement of γ-ray angular correlations. A 19/2- isomer at 1918 keV, with a half-life of 24(1) s, has been identified in 131I, as well as nanosecond isomers with Jπ = 23/2+ in both isotopes. A T1/2 = 25(3) ns isomer at 4308 keV in 131I is suggested to have Jπ = (31/2-, 33/2-) and is primarily attributed to the coupling of an odd proton in the d5/2 or g7/2 orbit with the (π2)0+(νh11/2-3d 3/2-1)15- configuration in 130Te, responsible for the 15- isomer in that nucleus. The observed level properties are compared with predictions of a shell-model calculation.

KW - High spin

KW - isomer

KW - shell-model

UR - http://www.scopus.com/inward/record.url?scp=77954827445&partnerID=8YFLogxK

U2 - 10.1142/S0217732310000368

DO - 10.1142/S0217732310000368

M3 - Article

SN - 0217-7323

VL - 25

SP - 1800

EP - 1803

JO - Modern Physics Letters A

JF - Modern Physics Letters A

IS - 21-23

ER -

Multi-quasiparticle isomers involving proton-particle and neutron-hole configurations in ¹³¹I and ¹³³I

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