Estimate T1 for F19 on Bruker
Create a file.
‘rpar F19CPD all’
‘getprosol’
‘rga’->’zg’->’efp’-> phasing.
Move O1 close to the peak interested (~100 Hz away).
Get F19 spectrum again. The peak interested should in the center.
Write down ‘rg’, ‘O1p’.
Create a new file.
‘rpar T1ir_F19 all’
‘getprosol’
Set ‘rg’ and ‘O1p’ as determined from above.
Set ‘d7’= 50us.
‘zg’->’em, ft’-> phasing the peak down, and write down the phasing value ph0.
Double check the phasing: ‘FID’ -> ‘em, ft, pk(not apk)’ see if the peak is negative.
Change d7 = 2s, and get the spectrum with ‘zg, em, ft, pk’.
Change d7 again, and repeat the process, until get the idea that how much is the d7 for signal to zero.
Double d7, ‘zg, em, ft, pk’ to see if get a positive signal.
Then you are able to estimate T1:
T1 ~ 1.4*d7, where d7 corresponding the zero signal.
If you need more scans, make sure d1 > 5 T1.
If you need accurate T1, you should measure more data and to get T1 value with
fitting.