NMR-modulated neutron scattering
NMR-modulated neutron scattering
复制标题
DOI：
10.1016/s0009-2614(03)00256-2
复制
发表时间：
2003-04-14
影响因子：
2.8
通讯作者：
Buckingham, AD
中科院分区：
文献类型：
--
作者：
Buckingham, AD
研究了将核磁共振与中子散射相结合来探索共振核散射长度的自旋相关性的可能性。在核磁共振中，一个圆周率脉冲反转共振核的磁化；第二个圆周率脉冲恢复磁化，该序列可以重复。倒转的核自旋调制了极化中子的散射，并可以提供类似于通过同位素替代获得的信息。但与同位素替代不同的是，缓慢的构象变化，就像蛋白质所表现的那样，原则上可以通过核磁共振调制来遵循。除非使用增强的核取向，否则调制强度将很弱。(C)2003 Elsevier Science B.V.保留所有权利。
The possibility of combining NMR with neutron scattering to exploit the spin dependence of the scattering length of a resonant nucleus is investigated. In NMR a pi pulse inverts the magnetization of the resonant nuclei; a second pi pulse restores the magnetization and the sequence could be repeated. The inverting nuclear spins modulate the scattering of polarized neutrons and could provide information similar to that obtainable through isotope substitution. But unlike isotope substitution, slow conformational changes, like those exhibited by proteins, could in principle be followed using NMR modulation. The modulated intensity will be weak unless enhanced nuclear orientation is used. (C) 2003 Elsevier Science B.V. All rights reserved.