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POLARIZATION MOVEMENT BY CORRELATION RELAXATION OF SOLUTION NMR OF VERY LARGE MOLECULE
POLARIZATION MOVEMENT BY CORRELATION RELAXATION OF SOLUTION NMR OF VERY LARGE MOLECULE
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机译：甚大分子溶液NMR的相关弛豫实现极化运动
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摘要
PROBLEM TO BE SOLVED: To obtain a polarization moving element of a high sensitivity usable as a fundamental element for various composite nuclear magnetic resonance experiment including a macromolecule by eliminating a reverse pulse operating at a spin of a nucleus during a period between 90 degree-pulses for exciting nuclei I, S. SOLUTION: A reverse pulse operating at a spin of a nucleus S is selected to be eliminated during a period T between 90 degree-pulses exciting spins of a nucleus I and the nucleus S or between two 90 degree-pulses operating at a spin or the nucleus I. A length of the period T [sin h(RCT)2+Sin(πJIST)2]1/2 exp (-RIT) becomes minimum (wherein RC is a lateral correlation relaxation speed, RI is a total lateral relaxation speed of the nucleus I, and JIS is a scalar binding constant). Thus, an essential feature of a magnetization moving (INEPT) method through a spin to spin binding can be combined with advantages of a correlation relaxation induction polarization movement (CRIPT) by omitting a rebound image and reverse pulse during the period T.
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