Sun, Y (reprint author), Shanghai Jiao Tong Univ, Dept Phys & Astron, Shanghai 200240, Peoples R China.
; Sun, Y (reprint author), Shanghai Jiao Tong Univ, CICIFSA, Shanghai 200240, Peoples R China.
; Sun, Y (reprint author), Chinese Acad Sci, Inst Theoret Phys, State Key Lab Theoret Phys, Beijing 100190, Peoples R China.
文章类型:
Article
英文摘要:
Pairing from different fermions, neutrons and protons, is unique in nuclear physics. The fingerprint for the isoscalar T = 0 neutron-proton (np) pairing has however remained a question. We study this exotic pairing mode in excited states of rotating N approximate to Z nuclei by applying the state-of-the-art shell-model calculations for Ru-88 and the neighboring Ru-90,Ru-92 isotopes. We show that the T = 0 np pairing is responsible for the distinct rotational behavior between the N = Z and N > Z nuclei. Our calculation suggests a gradual crossover from states with mixed T =1 and T = 0 pairing near the ground state to those dominated by the T = 0 np pairing at high spins. It is found that the T = 0 np pairing plays an important role in enhancing the high-spin collectivity, thereby reducing shape variations along the N = Z line. (C) 2016 Elsevier B.V. All rights reserved.
类目[WOS]:
Physics, Nuclear
关键词[WOS]:
SYMMETRY
项目资助者:
National Natural Science Foundation of China [11575112, 11135005]
; 973 Program of China [2013CB834401, 2016YFA0400501]
; Open Project Program of the State Key Laboratory of Theoretical Physics, Institute of Theoretical Physics, Chinese Academy of Sciences, China [Y5KF141CJ1]
; Italian Ministry of Foreign Affairs and International Cooperation
Kaneko, K,Sun, Y,de Angelis, G. Enhancement of high-spin collectivity in N = Z nuclei by the isoscalar neutron-proton pairing[J]. NUCLEAR PHYSICS A,2017,957:144-153.
