Spinning angle optical calibration apparatus

Patent · Tue Jan 01 00:00:00 EST 1991

OSTI ID:867726

Beer, Stephen K ^[1]

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1. Morgantown, WV

An optical calibration apparatus is provided for calibrating and reproducing spinning angles in cross-polarization, nuclear magnetic resonance spectroscopy. An illuminated magnifying apparatus enables optical setting an accurate reproducing of spinning "magic angles" in cross-polarization, nuclear magnetic resonance spectroscopy experiments. A reference mark scribed on an edge of a spinning angle test sample holder is illuminated by a light source and viewed through a magnifying scope. When the "magic angle" of a sample material used as a standard is attained by varying the angular position of the sample holder, the coordinate position of the reference mark relative to a graduation or graduations on a reticle in the magnifying scope is noted. Thereafter, the spinning "magic angle" of a test material having similar nuclear properties to the standard is attained by returning the sample holder back to the originally noted coordinate position.

• Research Organization: National Energy Technology Laboratory (NETL), Pittsburgh, PA, Morgantown, WV (United States)
• Assignee: United States of America as represented by United States (Washington, DC)
• Patent Number(s): US 4996483
• OSTI ID: 867726
• Country of Publication: United States
• Language: English

Related Subjects

spinning
angle
optical
calibration
apparatus
provided
calibrating
reproducing
angles
cross-polarization
nuclear
magnetic
resonance
spectroscopy
illuminated
magnifying
enables
setting
accurate
magic
experiments
reference
mark
scribed
edge
sample
holder
light
source
viewed
scope
material
standard
attained
varying
angular
position
coordinate
relative
graduation
graduations
reticle
noted
thereafter
similar
properties
returning
originally
resonance spectroscopy
angular position
sample holder
magnetic resonance
light source
nuclear magnetic
sample material
optical calibration
coordinate position
reference mark
spinning angle
calibration apparatus
apparatus enables
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