The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 23, 1985
Filed:
Nov. 01, 1982
Richard R Ernst, Winterthur, CH;
Spectrospin AG, , CH;
Abstract
For recording three-dimensional nuclear magnetic resonance spectra the nuclear spin-system must be excited by three 90.degree. pulses, with variation of the pulse intervals t.sub.1 and t.sub.m. Instead of varying the two pulse intervals separately, which would be required for recording the two time dimensions defined by t.sub.1 and t.sub.m, the mixing time t.sub.m is simultaneously varied proportionally to the evolution period each time the measurement is repeated with a varied evolution period t.sub.1, so that t.sub.m =.kappa.t.sub.1. K is so selected that the interesting mixing time period is completely covered by the predetermined number of measurements taken with different evolution times. The variation of t.sub.m is reflected by the shape of the resonance lines and can be determined also by reverse transformation of the individual resonance lines into the time domain. A spectrometer for carrying out this method may conveniently be adapted to permit setting of the pulse interval t.sub.1 and the proportionality factor K, to form therefrom automatically the second pulse interval t.sub.m.