Title: Discrete magic angle turning system, apparatus, and process for in situ magnetic resonance spectroscopy and imaging

Abstract

Described are a "Discrete Magic Angle Turning" (DMAT) system, devices, and processes that combine advantages of both magic angle turning (MAT) and magic angle hopping (MAH) suitable, e.g., for in situ magnetic resonance spectroscopy and/or imaging. In an exemplary system, device, and process, samples are rotated in a clockwise direction followed by an anticlockwise direction of exactly the same amount. Rotation proceeds through an angle that is typically greater than about 240 degrees but less than or equal to about 360 degrees at constant speed for a time applicable to the evolution dimension. Back and forth rotation can be synchronized and repeated with a special radio frequency (RF) pulse sequence to produce an isotropic-anisotropic shift 2D correlation spectrum. The design permits tubes to be inserted into the sample container without introducing plumbing interferences, further allowing control over such conditions as temperature, pressure, flow conditions, and feed compositions, thus permitting true in-situ investigations to be carried out.

Inventors:

Hu, Jian Zhi ^[1]; Sears, Jr., Jesse A. ^[2]; Hoyt, David W ^[1]; Wind, Robert A ^[3]

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+ Show Inventor Affiliations

1. Richland, WA
2. (Kennewick, WA)
3. Kennewick, WA

Issue Date:

2009-05-19

Research Org.:

Pacific Northwest National Laboratory (PNNL), Richland, WA (United States)

Sponsoring Org.:

USDOE

OSTI Identifier:

963818

Patent Number(s):

7535224

Application Number:

11/754,660

Assignee:

RLO

Patent Classifications (CPCs):

G - PHYSICS G01 - MEASURING G01N - INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES

G - PHYSICS G01 - MEASURING G01R - MEASURING ELECTRIC VARIABLES

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G - PHYSICS G01 - MEASURING G01N - INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES

G01N24/08 - by using nuclear magnetic resonance
G01N24/081 - {Making measurements of geologic samples, e.g. measurements of moisture, pH, porosity, permeability, tortuosity or viscosity}

G - PHYSICS G01 - MEASURING G01R - MEASURING ELECTRIC VARIABLES

G01R33/307 - {specially adapted for moving the sample relative to the MR system, e.g. spinning mechanisms, flow cells or means for positioning the sample inside a spectrometer}
G01R33/3808 - {Magnet assemblies for single-sided MR wherein the magnet assembly is located on one side of a subject only
G01R33/46 - NMR spectroscopy
G01R33/48 - NMR imaging systems

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DOE Contract Number:  

AC06-76RL01830

Resource Type:

Patent

Country of Publication:

United States

Language:

English

Subject:

47 OTHER INSTRUMENTATION