The g-factor measurement as an ultimate test for nuclear chirality  

作　　者：Ernest Grodner Michał Kowalczyk Julian Srebrny Leszek Próchniak Chrystian Droste Jan Kownacki Maciej Kisieliński Krzysztof Starosta Takeshi Koike 

机构地区：[1]National Centre for Nuclear Research,05-540Świerk,Poland [2]Heavy Ion Laboratory,University of Warsaw,Pasteura 5a,02-093 Warsaw,Poland [3]Faculty of Physics,University of Warsaw,Pasteura 5,02-093 Warsaw,Poland [4]Simon Fraser University,8888 University Drive Burnaby,B.C.Canada V5A 1S6 [5]Department of Physics,Tohoku University,Sendai,Miyagi 980-8577,Japan

出　　处：《Frontiers of physics》2024年第3期1-10,共10页物理学前沿（英文版）

摘　　要：We present results of a series of experiments aimed at finding the most direct fingerprints of a phenomenon of nuclear chirality. These experiments brought a detailed knowledge of the so called partner bands in 132La, 128Cs and 126Cs including absolute values of E2 and M1 transition probabilities obtained through the DSA (Doppler Shift Attenuation) method. Considering the indirect character of observables such as energies and transition rates we proposed measurement of the g-factor of a chosen state as a direct, ultimate test of chirality. Our experiment on the bandhead of partner bands in 128Cs showed feasibility of this approach. Measured value of the g-factor which suggests non-chiral character of this state leads to another puzzle in the chirality studies — how the chirality emerges with increasing spin of levels along a partner band.

关 键 词：nuclear chirality electromagnetic transitions electromagnetic moments level lifetimes 

分 类 号：O57[理学—粒子物理与原子核物理]