First identification of excited states in Ba117 using the recoil- β -delayed proton tagging technique

Ding, B.; Liu, Z.; Seweryniak, D.; Woods, P. J.; Wang, H. L.; Yang, J.; Liu, H. L.; Davids, C. N.; Carpenter, M. P.; Davinson, T.; Janssens, R. V. F.; Page, R. D.; Robinson, A. P.; Shergur, J.; Sinha, S.; Zhu, S.; Tang, X. D.; Wang, J. G.; Huang, T. H.; Zhang, W. Q.; Sun, M. D.; Liu, X. Y.; Lu, H. Y.

doi:10.1103/PhysRevC.95.024301

Title: First identification of excited states in ${}^{117}{Ba}$ using the recoil- $β$ -delayed proton tagging technique

Journal Article · Wed Feb 01 00:00:00 EST 2017 · Physical Review C

DOI:https://doi.org/10.1103/PhysRevC.95.024301· OSTI ID:1374889

Ding, B. ^[1]; Liu, Z. ^[1]; Seweryniak, D. ^[2]; Woods, P. J. ^[3]; Wang, H. L. ^[4]; Yang, J. ^[4]; Liu, H. L. ^[5]; Davids, C. N. ^[2]; Carpenter, M. P. ^[2]; Davinson, T. ^[3]; Janssens, R. V. F. ^[2]; Page, R. D. ^[6]; Robinson, A. P. ^[2]; Shergur, J. ^[7]; Sinha, S. ^[2]; Zhu, S. ^[2]; Tang, X. D. ^[1]; Wang, J. G. ^[1]; Huang, T. H. ^[1]; Zhang, W. Q. ^[1] more »

Chinese Academy of Sciences, Lanzhou (China)
Argonne National Lab. (ANL), Argonne, IL (United States)
Univ. of Edinburgh, Edinburgh (United Kingdom)
Zhengzhou Univ., Zhengzhou (China)
Xi'an Jiaotong Univ., Xi'an (China)
Univ. of Liverpool, Liverpool (United Kingdom)
Univ. of Maryland, College Park, MD (United States)
Chinese Academy of Sciences, Lanzhou (China); Univ. of Chinese Academy of Sciences, Beijing (China); Lanzhou Univ., Lanzhou (China)
Chinese Academy of Sciences, Lanzhou (China); Univ. of Chinese Academy of Sciences, Beijing (China)

Excited states have been observed for the first time in the neutron-deficient nucleus ¹¹⁷Ba using the recoil-decay tagging technique following the heavy-ion fusion-evaporation reaction ⁶⁴Zn(⁵⁸Ni, 2p3n)¹¹⁷Ba. Prompt γ rays have been assigned to ¹¹⁷Ba through correlations with β-delayed protons following the decay of A = 117 recoils. Through the analysis of the γ–γ coincidence relationships, a high-spin level scheme consisting of two bands has been established in ¹¹⁷Ba. Based on the systematics of the level spacings in the neighboring barium isotopes, the two bands are proposed to have νh_11/2[532]5/2^– and νd_5/2[413]5/2⁺ configurations, respectively. Lastly, the observed band-crossing properties are interpreted in the framework of cranked shell model.

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Research Organization:: Argonne National Lab. (ANL), Argonne, IL (United States)

Sponsoring Organization:: USDOE Office of Science (SC), Nuclear Physics (NP); National Natural Science Foundation of China (NSFC); Chinese Academy of Sciences (CAS); United Kingdom Science and Technology Facilities Council

Grant/Contract Number:: AC02-06CH11357

OSTI ID:: 1374889

Alternate ID(s):: OSTI ID: 1342446

Journal Information:: Physical Review C, Vol. 95, Issue 2; ISSN 2469-9985

Publisher:: American Physical Society (APS)Copyright Statement

Country of Publication:: United States

Language:: English

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Cited by: 4 works

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