skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Method And Apparatus For High Resolution Ex-Situ Nmr Spectroscopy

Abstract

A method and apparatus for ex-situ nuclear magnetic resonance spectroscopy for use on samples outside the physical limits of the magnets in inhomogeneous static and radio-frequency fields. Chemical shift spectra can be resolved with the method using sequences of correlated, composite z-rotation pulses in the presence of spatially matched static and radio frequency field gradients producing nutation echoes. The amplitude of the echoes is modulated by the chemical shift interaction and an inhomogeneity free FID may be recovered by stroboscopically sampling the maxima of the echoes. In an alternative embodiment, full-passage adiabatic pulses are consecutively applied. One embodiment of the apparatus generates a static magnetic field that has a variable saddle point.

Inventors:
 [1];  [2];  [3];  [4];  [1]
  1. (Berkeley, CA)
  2. (El Cerrito, CA)
  3. (Goettingen, DE)
  4. (Oakland, CA)
Publication Date:
Research Org.:
Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
OSTI Identifier:
879818
Patent Number(s):
US 6,674,282
Application Number:
10/218974
Assignee:
The Regents of the University of California (Oakland, CA) LBNL
DOE Contract Number:  
AC03-76SF00098
Resource Type:
Patent
Country of Publication:
United States
Language:
English

Citation Formats

Pines, Alexander, Meriles, Carlos A., Heise, Henrike, Sakellariou, Dimitrios, and Moule, Adam. Method And Apparatus For High Resolution Ex-Situ Nmr Spectroscopy. United States: N. p., 2004. Web.
Pines, Alexander, Meriles, Carlos A., Heise, Henrike, Sakellariou, Dimitrios, & Moule, Adam. Method And Apparatus For High Resolution Ex-Situ Nmr Spectroscopy. United States.
Pines, Alexander, Meriles, Carlos A., Heise, Henrike, Sakellariou, Dimitrios, and Moule, Adam. Tue . "Method And Apparatus For High Resolution Ex-Situ Nmr Spectroscopy". United States. https://www.osti.gov/servlets/purl/879818.
@article{osti_879818,
title = {Method And Apparatus For High Resolution Ex-Situ Nmr Spectroscopy},
author = {Pines, Alexander and Meriles, Carlos A. and Heise, Henrike and Sakellariou, Dimitrios and Moule, Adam},
abstractNote = {A method and apparatus for ex-situ nuclear magnetic resonance spectroscopy for use on samples outside the physical limits of the magnets in inhomogeneous static and radio-frequency fields. Chemical shift spectra can be resolved with the method using sequences of correlated, composite z-rotation pulses in the presence of spatially matched static and radio frequency field gradients producing nutation echoes. The amplitude of the echoes is modulated by the chemical shift interaction and an inhomogeneity free FID may be recovered by stroboscopically sampling the maxima of the echoes. In an alternative embodiment, full-passage adiabatic pulses are consecutively applied. One embodiment of the apparatus generates a static magnetic field that has a variable saddle point.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2004},
month = {1}
}

Patent:

Save / Share: