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

Abstract

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.

Authors:
 [1];  [1];  [2];  [3];  [4];  [4];  [5];  [2];  [2];  [3];  [2];  [6];  [2];  [7];  [2];  [2];  [1];  [1];  [1];  [1] more »;  [8];  [9];  [9] « less
  1. Chinese Academy of Sciences, Lanzhou (China)
  2. Argonne National Lab. (ANL), Argonne, IL (United States)
  3. Univ. of Edinburgh, Edinburgh (United Kingdom)
  4. Zhengzhou Univ., Zhengzhou (China)
  5. Xi'an Jiaotong Univ., Xi'an (China)
  6. Univ. of Liverpool, Liverpool (United Kingdom)
  7. Univ. of Maryland, College Park, MD (United States)
  8. Chinese Academy of Sciences, Lanzhou (China); Univ. of Chinese Academy of Sciences, Beijing (China); Lanzhou Univ., Lanzhou (China)
  9. Chinese Academy of Sciences, Lanzhou (China); Univ. of Chinese Academy of Sciences, Beijing (China)
Publication Date:
Research Org.:
Argonne National Lab. (ANL), Argonne, IL (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Nuclear Physics (NP) (SC-26); National Natural Science Foundation of China (NNSFC); Chinese Academy of Sciences (CAS); United Kingdom Science and Technology Facilities Council
OSTI Identifier:
1374889
Alternate Identifier(s):
OSTI ID: 1342446
Grant/Contract Number:
AC02-06CH11357
Resource Type:
Journal Article: Accepted Manuscript
Journal Name:
Physical Review C
Additional Journal Information:
Journal Volume: 95; Journal Issue: 2; Journal ID: ISSN 2469-9985
Publisher:
American Physical Society (APS)
Country of Publication:
United States
Language:
English
Subject:
73 NUCLEAR PHYSICS AND RADIATION PHYSICS

Citation Formats

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., and Lu, H. Y. First identification of excited states in Ba117 using the recoil- β -delayed proton tagging technique. United States: N. p., 2017. Web. doi:10.1103/PhysRevC.95.024301.
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. First identification of excited states in Ba117 using the recoil- β -delayed proton tagging technique. United States. doi:10.1103/PhysRevC.95.024301.
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., and Lu, H. Y. Wed . "First identification of excited states in Ba117 using the recoil- β -delayed proton tagging technique". United States. doi:10.1103/PhysRevC.95.024301. https://www.osti.gov/servlets/purl/1374889.
@article{osti_1374889,
title = {First identification of excited states in Ba117 using the recoil- β -delayed proton tagging technique},
author = {Ding, B. and Liu, Z. and Seweryniak, D. and Woods, P. J. and Wang, H. L. and Yang, J. and Liu, H. L. and Davids, C. N. and Carpenter, M. P. and Davinson, T. and Janssens, R. V. F. and Page, R. D. and Robinson, A. P. and Shergur, J. and Sinha, S. and Zhu, S. and Tang, X. D. and Wang, J. G. and Huang, T. H. and Zhang, W. Q. and Sun, M. D. and Liu, X. Y. and Lu, H. Y.},
abstractNote = {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 νh11/2[532]5/2– and νd5/2[413]5/2+ configurations, respectively. Lastly, the observed band-crossing properties are interpreted in the framework of cranked shell model.},
doi = {10.1103/PhysRevC.95.024301},
journal = {Physical Review C},
number = 2,
volume = 95,
place = {United States},
year = {Wed Feb 01 00:00:00 EST 2017},
month = {Wed Feb 01 00:00:00 EST 2017}
}

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