摘要
用密度矩阵理论和计算机模拟较详细地讨论了自旋I=3/2核四极共振(NQR)粉末体系对梳状脉冲的响应以及偏共振效应的影响.在偏共振强度(包括谱线的非均匀增宽)较小的条件下.由它获得的谱与二维章动谱是相似的.但是实验所需时间能够减少近两个数量级.
The response of an I=3/2 nuclear quadrupole resonance(NQR) system to a comb-pulse train is calculated by means of the density matrix theory and computer simulations. The influence of the off-resonance( including inhomogeneous line broadening) upon the comb-pulse NQR powder line shape is also discussed in detail. It was found that under the condition of small off-resonance, the comb-pulse NQR spectrum is analogous to that obtained with the two-dimensional nutation NQR technique, but the time required to perform the comb-pulse experiment is nearly two orders less than that required by the latter.
出处
《物理学报》
SCIE
EI
CAS
CSCD
北大核心
1996年第4期681-688,共8页
Acta Physica Sinica
基金
上海市科学技术委员会"青年科技启明星重点培养计划"资助的课题
