Decay of nuclear magnetization by diffusion in a parabolic magnetic field: An exactly solvable model.
Decay of nuclear magnetization by diffusion in a parabolic magnetic field: An exactly solvable model.
复制标题
抛物线磁场中扩散引起的核磁化强度衰减：一个精确可解的模型。
DOI：
10.1103/physrevb.46.3465
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发表时间：
1992
影响因子：
3.7
通讯作者：
S. Pn
中科院分区：
文献类型：
--
作者：
P. LeDoussal;S. Pn
在场（B 0 + g1 z+ g2 z2）z中扩散的自旋的横向磁化强度衰减的精确表达式表明，支配这个问题的自然长度尺度lc =（8D/γ g2）1/4，与之相联系的频率Ω=4D/lc.这里D是扩散常数，γ是旋磁比。Lc是在长时间时磁化包的大小，即，Ω o t>>1
An exact expression for the decay of the transverse magnetization of spins diffusing in a field (B 0 +g 1 z+g 2 z 2 )z reveals that a natural length scale l c =(8D/γg 2 ) 1/4 , and a frequency associated with it Ω=4D/l c govern the problem. Here D is the difusion constant and γ is the gyromagnetic ratio. l c is the size of the packet of magnetization at long times, i.e., Ω o t>>1