Open AccessEvolution of the yrast-band structure in 76 Sr nuclei within microscopic theory
Author(s) -
Shi Zhu-yi,
Tong Hong,
Huan Zhang,
Weiyi Hong,
Lei Yu-Xi,
Zhao Xing-Zhi,
Ni Shao-Yong
Publication year - 2009
Publication title -
wuli xuebao
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.199
H-Index - 47
ISSN - 1000-3290
DOI - 10.7498/aps.58.4542
Subject(s) - yrast , physics , excitation , nucleus , nuclear structure , nucleon , coupling (piping) , angular momentum , momentum (technical analysis) , phase transition , electronic band structure , atomic physics , condensed matter physics , quantum mechanics , excited state , materials science , finance , economics , metallurgy , biology , microbiology and biotechnology
A new viewpoint is proposed for understanding the quantum phase transition from a higher-ordered excitation model to other lower-ordered one, which suggests that a nucleus populated at high-momentum state decouples firstly to the yrast-band with the E2-trasitions mode, and then to the coexist region, wherein the structure-energy is released, the change in the nucleon coupling intensity ensues, finally the basic state of the lower-ordered excitation model is reconstructed, the evolution of basic states structure is accomplished. Therefore this is a smooth and calm transition. Using an example of the 76 Sr nucleus, the problem is discussed carefully.