Thank you for all your responses. I learned quite a bit. There are several
designs using small ID glass that I was unaware of. These include:
Yamada, H., Review of Scientific Instruments, vol. 45, pg. 640 (1974)
Wagner, G., FEBS Letters vol. 112, pg. 280 (1980)
Yonker, C. R., et al., J. Magn. Reson. Ser A, vol. 113, pg. 102 (1995)
And Gaemers et al., Chem. Soc. Rev. 1999, 28, 135 reviews NMR in
supercritical systems, which of course involves pressure.
Also, Joshua Wand gave a talk at the last ENC that showed some designs
reminiscent of Chris Roe's, but I think it is still unpublished. (Having
said that, someone will probably correct me.)
The above work is quite impressive, but not all of the above claim 4 kbar.
Also, since this group is doing 17O, they need a large filling factor for
adequate S/N and the above methods do not provide that. They have come to
the conclusion that they are going to have to bite the bullet and build a
"conventional" high pressure probe AKA a bomb. Having built one, I can see
why they were reluctant.
Finally I need to apologize for spelling Jiri Jonas's name wrong. I should
have known better.
Thanks again for all your responses!
Jeff
Jeffrey H. Walton
Assistant Research Physicist
One Shields Ave.
UCD NMR Facility, Bldg. MS1-D
University of California
Davis, CA 95616
(530) 752-7794 (office)
(530) 754-9064 (lab)
(530) 752-8109 (FAX)
jhwalton@ucdavis.edu
NMR Facility URL http://www.nmr.ucdavis.edu