i like this post (click again to cancel)
0
i dont like this post (click again to cancel) remove favorite mark from this question (click again to restore mark)

We have been trying to get a 2D H-F experiment to work using the X 100 W amplifier on our Bruker NMR, but can't get it to work with either H or F even though we get a pretty decent RG value. Does anyone know the difference between the X 100 W and H 50 W amplifers?

asked Mar 23 '16 at 17:26

ysuh's gravatar image

ysuh
1


2 Answers:
i like this answer (click again to cancel)
0
i dont like this answer (click again to cancel)

Hello,

2D is a bit tricky to do!

X100W amplifier is for x nucleis and the H50W is for Proton and 19F lonely.

  1. Option there is a third amplifier in the spectrometer hidden - only for the Deuterium!! If you take this Option you can use a Special puslprogram, which shuts off the lock during measurement of 2H. You are using know the lock-channel for Deuterium detection. This Option is not so sensitive, ... take more scans, but you have not Change the cablings.

zg2h or zg2h.2 are the pulsprograms, ... please use the parameterset via rpar and getprosol.

  1. Option, there you have to Change the cablings manually - not only switching around in edasp or probehead - also you have to bypass the X-amplifier unit - there is a Deuterium stopp filter.

Take Version 1 - it is the easy going Version

Have a nice try!

Uli

link

answered May 04 '16 at 01:25

Ulrich%20Haunz's gravatar image

Ulrich Haunz
210

i like this answer (click again to cancel)
0
i dont like this answer (click again to cancel)

To do H/F double resonance there are a number of requirements.

  1. You need a probe that can be simultaneously tuned to H and F (BBFO and QNP will work)
  2. You need filters on the pre-amp inputs usually supplied with he system if you have a probe as described in point 1
  3. The QNP switch in the console (part of the routing) can switch the H and F transmitter outputs fast enough to do H/F 2D, but the pulse program has to explicitly be set up to do it.

Make cure all of you routing (software and cables) are set up so that the amplifier in use is using the QNP switch.

link

answered Jun 14 '16 at 11:55

Kirk%20Marat's gravatar image

Kirk Marat
711

Your answer
Please start posting your answer anonymously - your answer will be saved within the current session and published after you log in or create a new account. Please try to give a good answer, for discussions, please use comments and please do remember to vote (login to vote)
toggle preview

powered by CNPROG