Patent · US Expired

Method for increasing resolution in solid-state NMR spectra of abundant nuclei

US5229718A · kind A · utility

4Cited by
10References
16Claims
0Family size

Assignee

Inventor

Key dates

Filing dateJan 17, 1991
Grant dateJul 20, 1993
Priority date—
Expiry dateJan 17, 2011

Classification

  • Technology area (CPC G)Physics
  • CPC primaryG01R33/4641
  • WIPO fieldMeasurement
  • WIPO sectorInstruments

Abstract

A multiple-pulse RF pulse sequence reduces homonuclear dipolar coupling more efficiently relative to other known pulse sequences and is relatively insensitive to inhomogeneous RF fields, pulse imperfections and transmitter misadjustments so that it can be used on less sophisticated instruments and does not require long setup times. The inventive RF pulse sequence is constructed from selected sets of known six-pulse cycles called dipolar decoupled inversion pulses or composite inversion pulses. The dipolar decoupled inversion pulses are, in turn, constructed from standard solid echo pulse pairs. The six-pulse cycles are selected so that zero-order term of the average dipolar Hamiltonian is zero.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.