高能物理与核物理
高能物理與覈物理
고능물리여핵물리
HIGH ENERGY PHYSICS AND NUCLEAR PHYSICS
2001年
6期
526-532
,共7页
余雷%刘树新%雷奕安%曾谨言
餘雷%劉樹新%雷奕安%曾謹言
여뢰%류수신%뢰혁안%증근언
正常变形全同带单极与四极对力推转的Nilsson轨道粒子数守恒方法
正常變形全同帶單極與四極對力推轉的Nilsson軌道粒子數守恆方法
정상변형전동대단겁여사겁대력추전적Nilsson궤도입자수수항방법
用处理对力的粒子数守恒方法分析了稀土区正常变形奇核-偶核全同带的物理机制. 这些全同带的奇粒子均处于推转的低j高Ω Nilsson轨道. 相反,建立在高j闯入轨道上的奇A核转动带的转动惯量,无例外都比相邻偶核基态带的转动惯量大得多. 观测到的转动惯量随角频率的变化(带交叉前)可以在粒子数守恒的计算中很好地重现. 计算中无自由参数. 单极对力强度与Y20四极对力强度由结合能奇偶差与带首转动惯量奇偶差确定.
用處理對力的粒子數守恆方法分析瞭稀土區正常變形奇覈-偶覈全同帶的物理機製. 這些全同帶的奇粒子均處于推轉的低j高Ω Nilsson軌道. 相反,建立在高j闖入軌道上的奇A覈轉動帶的轉動慣量,無例外都比相鄰偶覈基態帶的轉動慣量大得多. 觀測到的轉動慣量隨角頻率的變化(帶交扠前)可以在粒子數守恆的計算中很好地重現. 計算中無自由參數. 單極對力彊度與Y20四極對力彊度由結閤能奇偶差與帶首轉動慣量奇偶差確定.
용처리대력적입자수수항방법분석료희토구정상변형기핵-우핵전동대적물리궤제. 저사전동대적기입자균처우추전적저j고Ω Nilsson궤도. 상반,건립재고j틈입궤도상적기A핵전동대적전동관량,무예외도비상린우핵기태대적전동관량대득다. 관측도적전동관량수각빈솔적변화(대교차전)가이재입자수수항적계산중흔호지중현. 계산중무자유삼수. 단겁대력강도여Y20사겁대력강도유결합능기우차여대수전동관량기우차학정.
The microscopic mechanism of the identical odd- and even-mass number nuclear bands in normally deformed rare-earth nuclei was investigated using the particle-number conserving (PNC) method for treating nuclear pairing correlation. It was found that the odd particle of an odd-A identical band always occupied a cranked low j and high Ω Nilsson orbital (e.g. proton [404]7/2, [402]5/2). On the contrary, if the odd particle occupies an intruder high j orbital (e.g. neutron [633]7/2, proton [514]9/2), the moment of inertia of the odd-A band was much larger than that of neighboring even-even ground state band. The observed variation of moment of inertia (below bandcrossing) was reproduced quite well by the PNC calculation, in which no free parameter was involved. The strengths of monopole and Y20 quadrupole interactions were determined by the experimental odd-even differences in binding energy and bandhead moment of inertia.