Dear AMMRLers:
One of my NMR users would like to do double-quantum and triple-quantum filtered
23Na NMR. I am going to try it on our Bruker DPX400. Does someone have the pulse
sequences which work?
I wrote a double-quantum filtered sequence based on C. Chung and S. Wimperis,
JMR, 88, 440-447 (1990). I have not tried it.
Thanks for help.
Frank
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;avance-version
;1D double quantum filtered NMR for 23Na
;C. Chung and S. Wimperis, JMR, 88, 440-447 (1990)
#include <Avance.incl>
"d4=2.5 ms"
"p2=p1*2"
"d13=4u"
1 ze
2 d1
p1 ph1
d4
p2 ph2
d4
p1 ph1
d13
p1 ph3
go=2 ph31
wr #0
exit
ph1=0 1 2 3
ph2=0 1 2 3
ph3=0 0 0 0
ph31=0 2 0 2
;pl1 : f1 channel - power level for pulse
;p1 : f1 channel - 90 degree high power pulse
;d4: fixed evolution period
;p2 : f1 channel - 180 degree high power pulse
;d1 : relaxation delay; 1-5 * T1
;d13: short delay [4 usec]
;NS: 4 * n
;DS: 4
************************************
**********************************************************************
Zhe (Frank) Zhou, Ph.D.
NMR Facility Manager
Department of Chemistry, Louisiana State University
232 Choppin Hall, Baton Rouge, LA 70803-1804, USA
Email: frank.zhou_at_chem.lsu.edu
Office: (225)-388-3460, Lab: (225)-388-3373/(225)-388-3597
Departmental Fax: (225)-388-3458
http://www.chem.lsu.edu/web/facilities/FrankZhou/frank.html
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Received on Tue Aug 22 2000 - 13:50:54 MST