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Updated: Jul 17, 2026

Measuring the Spin-Lattice Relaxation Magnetic Field Dependence of Hyperpolarized [1-13C]pyruvate
11:57

Measuring the Spin-Lattice Relaxation Magnetic Field Dependence of Hyperpolarized [1-13C]pyruvate

Published on: September 13, 2019

NMR R1 rho ローティングフレームのリラクゼーションで,無線周波数フィールドが弱い

Francesca Massi1, Eric Johnson, Chunyu Wang

  • 1Department of Biochemistry and Molecular Biophysics, Columbia University, 630 West 168th Street, New York, New York 10032, USA.

Journal of the American Chemical Society
|February 20, 2004
PubMed
まとめ

新しいNMR実験により,弱い無線周波数フィールドを使用して,化学交換運動を正確に測定することができます. これは,運動過程の利用可能な時間スケールを拡張することによって,生物学的マクロ分子の研究を進めます.

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¹H NMR: Interpreting Distorted and Overlapping Signals

Spin systems where the difference in chemical shifts of the coupled nuclei is greater than ten times J are called first-order spin systems. These nuclei are weakly coupled, and their chemical shifts and coupling constant can generally be estimated from the well-separated signals in the spectrum.
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Atomic Nuclei: Nuclear Relaxation Processes

In the absence of an external magnetic field, nuclear spin states are degenerate and randomly oriented. When a magnetic field is applied, the spins begin to precess and orient themselves along (lower energy) or against (higher energy) the direction of the field. At equilibrium, a slight excess population of spins exists in the lower energy state. Because the direction of the magnetic field is fixed as the z-axis,  the precessing magnetic moments are randomly oriented around the z-axis. This...
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Double Resonance Techniques: Overview

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