Question

Hi this is Veera Mohan,

I have a doubt about setting an experiment, that is I need to run ROCSA solid state nmr experiment In that experiment we need to acquire the experiment separately in both real and imaginary modes, If anybody knows this one could you please send me the reply to the email mohanvrk@gmail.com, Our NMR machine is VARIAN UNITY INOVA.

regards, mohan

Answer 1

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Hi Veera, I've looked at the pulse sequence rocsa2d.c and it seems that quad selection is hardcoded into phase tables table2 - for X nucleus CP pulses and table13 - for the receiver.

The original records are:

static int table2[4] = {0,0,1,1};
static int table13[4] = {0,2,1,3};

I think what will achieve your goal is modifying those entries like so (and recompiling the sequence with seqgen command):

static int table2[4] = {0,0};
static int table13[4] = {0,2};

or

static int table2[4] = {1,1};
static int table13[4] = {1,3};

one of them should result in real data another in imaginary (not sure which one will be which :).

Disclaimer: I don't know anything about solids sequences and just applying guesswork here. Will appreciate if someone corrects me. Thanks.

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answered Aug 31 '10 at 11:24

Evgeny Fadeev
577●1

updated Aug 31 '10 at 11:29

Answer 2

0	Hi Evgeny-Fadeev, Thanking you very much for your answer I will be back to after trying for some results with you suggestions, regards, mohan link answered Sep 01 '10 at 18:51 MOHAN 11

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