We have begun the design and construction of a variable temperature magic angle spinning probe with illumination capability for a 500 MHz NMR spectrometer. The probe follows the transmission line design originally suggested by McKay, et al. to permit the use of high power decoupling fields. The insertion of a rigid borosilicate light guide through the inner conductor permits illumination of optically active samples without perturbing the transmission line. Gas lines will be vacuum jacketed and inside a dewar to permit experiments at cryogenic temperatures for signal enhancement and trapping of transient species. Reduction of the standing wave ratio along the transmission line will be achieved by modulation of the inner conductor diameter, thereby improving the probe efficiency. Isolation between the channels will be accomplished by tapping the transmission line at voltage nodes.

Agency
National Institute of Health (NIH)
Institute
National Center for Research Resources (NCRR)
Type
Biotechnology Resource Grants (P41)
Project #
5P41RR000995-23
Application #
6279719
Study Section
Project Start
1998-05-01
Project End
1999-04-30
Budget Start
1997-10-01
Budget End
1998-09-30
Support Year
23
Fiscal Year
1998
Total Cost
Indirect Cost
Name
Massachusetts Institute of Technology
Department
Type
DUNS #
City
Cambridge
State
MA
Country
United States
Zip Code
02139
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