| Title | Identification of the Lowest T=2, J(pi)=0(+) Isobaric Analog State in Co-52 and Its Impact on the Understanding of beta-Decay Properties of Ni-52 |
| Authors | Xu, X. Zhang, P. Shuai, P. Chen, R. J. Yan, X. L. Zhang, Y. H. Wang, M. Litvinov, Yu. A. Xu, H. S. Bao, T. Chen, X. C. Chen, H. Fu, C. Y. Kubono, S. Lam, Y. H. Liu, D. W. Mao, R. S. Ma, X. W. Sun, M. Z. Tu, X. L. Xing, Y. M. Yang, J. C. Yuan, Y. J. Zeng, Q. Zhou, X. Zhou, X. H. Zhan, W. L. Litvinov, S. Blaum, K. Audi, G. Uesaka, T. Yamaguchi, Y. Yamaguchi, T. Ozawa, A. Sun, B. H. Sun, Y. Dai, A. C. Xu, F. R. |
| Affiliation | Chinese Acad Sci, Inst Modern Phys, Key Lab High Precis Nucl Spect, Lanzhou 730000, Peoples R China. Chinese Acad Sci, Inst Modern Phys, Ctr Nucl Matter Sci, Lanzhou 730000, Peoples R China. Chinese Acad Sci, Grad Univ, Beijing 100049, Peoples R China. GSI Helmholtzzentrum Schwerionenforsch, Planckstr 1, D-64291 Darmstadt, Germany. Max Planck Inst Kernphys, Saupfercheckweg 1, D-69117 Heidelberg, Germany. Natl Lab Heavy Ion Accelerator Facil Lanzhou, Res Ctr Hadron Phys, Hefei 230026, Peoples R China. Univ Sci & Technol China, Hefei 230026, Peoples R China. Univ Paris 11, Univ Paris Saclay, CNRS IN2P3, CSNSM, F-91405 Orsay, France. RIKEN, RIKEN Nishina Ctr, Saitama 3510198, Japan. Univ Tsukuba, Inst Phys, Ibaraki 3058571, Japan. Beihang Univ, Sch Phys & Nucl Energy Engn, Beijing 100191, Peoples R China. Shanghai Jiao Tong Univ, Dept Phys & Astron, Shanghai 200240, Peoples R China. Peking Univ, Sch Phys, State Key Lab Nucl Phys & Technol, Beijing 100871, Peoples R China. Chinese Acad Sci, Inst Modern Phys, Key Lab High Precis Nucl Spect, Lanzhou 730000, Peoples R China. Litvinov, YA (reprint author), GSI Helmholtzzentrum Schwerionenforsch, Planckstr 1, D-64291 Darmstadt, Germany. |
| Keywords | ISOCHRONOUS MASS-SPECTROMETRY RELATIVISTIC HEAVY-IONS COULOMB ENERGIES NUCLEI CHARGE SPECTROSCOPY SYMMETRY |
| Issue Date | 2016 |
| Publisher | PHYSICAL REVIEW LETTERS |
| Citation | PHYSICAL REVIEW LETTERS.2016,117(18). |
| Abstract | Masses of Co-52g,Co-52m were measured for the first time with an accuracy of similar to 10 keV, an unprecedented precision reached for short-lived nuclei in the isochronous mass spectrometry. Combining our results with the previous beta-gamma measurements of Ni-52, the T = 2, J(pi) = 0(+) isobaric analog state (IAS) in Co-52 was newly assigned, questioning the conventional identification of IASs from the beta-delayed proton emissions. Using our energy of the IAS in Co-52, the masses of the T = 2 multiplet fit well into the isobaric multiplet mass equation. We find that the IAS in Co-52 decays predominantly via gamma transitions while the proton emission is negligibly small. According to our large-scale shell model calculations, this phenomenon has been interpreted to be due to very low isospin mixing in the IAS. |
| URI | http://hdl.handle.net/20.500.11897/458673 |
| ISSN | 0031-9007 |
| DOI | 10.1103/PhysRevLett.117.182503 |
| Indexed | SCI(E) |
| Appears in Collections: | 物理学院 核物理与核技术国家重点实验室 |
