Revisiting spin-lattice relaxation time measurements for dilute spins in high-resolution solid-state NMR spectroscopy
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- 作者：Riqiang Fua ; rfu@magnet.fsu.edu" class="auth_mail" title="E-mail the corresponding author ; Jun Lib ; Jingyu Cuic ; Xinhua Pengc ; d ; xhpeng@ustc.edu.cn" class="auth_mail" title="E-mail the corresponding author
- 关键词：Solid-state NMR ; Solomon equations ; Spin&ndash ; lattice relaxation time ; Cross relaxation
- 刊名：Journal of Magnetic Resonance
- 出版年：2016
- 出版时间：July 2016
- 年：2016
- 卷：268
- 期：Complete
- 页码：107-113
- 全文大小：998 K
文摘
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Solomon equations are revisited for describing spin–lattice relaxation processes.
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Heteronuclear cross relaxation affects the recovery trajectory of the dilute spins.
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Heteronuclear cross relaxation effect is scaled by initial I and S magnetizations.
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This effect leads to inaccurate measured T1 values even when T1S is larger than T1H.
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Accurate T1S values can be obtained by suppressing heteronuclear cross relaxation effect.