报告题目: New results on chirality in the A?130 mass region
报 告 人: 吕冰锋 Bingfeng Lv ( University of Paris-Sud/Paris Saclay)
Chirality is a property that has important consequences in fields of science as diverse as biology, chemistry, and physics. In nuclear physics, chirality is an exotic rotational phenomenon in triaxially deformed nucleus. It is a dynamic collective mode that may appear in a nucleus which rotates about an axis out of the three principal planes of the ellipsoidal nuclear shape. Recently, evidence for multiple chiral doublet bands has been observed for the first time in the nuclei 135,136,137Nd, we have succeeded to identify several new pairs of chiral bands in these nuclei, which bring an important contribution to the consolidation of the multiple chiral bands (MχD) phenomenon. The observed bands were investigated using newly developed theoretical models, like CDFT, multi-j particle-rotor model (PRM) multi-j triaxial projected shell model (TPSM). Calculated results support the chiral interpretation of the observed bands, which correspond to shapes with maximum triaxiality induced by different multi-quasiparticle configurations in these nuclei.
吕冰锋，目前巴黎第十一大学/巴黎萨克雷大学博士后。先后在兰州大学获学士学位，中国科学院近代物理研究所获硕士学位，巴黎第十一大学/巴黎萨克雷大学获博士学位。目前主要从事实验原子核物理研究，研究领域包括原子核手征对称性，原子核激发态寿命，原子核奇异转动，超形变，远离稳定线丰质子区核结构等，特别是在原子核手征性实验研究中，首次在偶偶核中发现了多重手征带，并且观测到了五对手征双重带，是截至目前在所有手性原子核中观测到对数最多的，已发表Physical Review C, Physics Letters B等论文10余篇。