On Mon, Mar 9, 2009 at 6:58 PM, Pierre-Yves Savard
<Pierre-Yves.Savard@xxxxxxxxxxxxx> wrote:
Hi,
I would like to know if the Rex values given in the xml result file of
relax 1.3 are expressed in s-1 or if it is the result of the following
formula: Rex/(2 * π * freq)**2?
The value is in 1/seconds (note this is actually rad/s but the rad is
hidden - hence why you don't call it Hertz). The field strength is
also noted in the results file, indicating that it is not the
field-strength free value of sigma_ex = Rex/omega**2.
The values I get (~3E-19) seem to come from the scaling equation, but in
the result file, these values are associated with a field strength:
<rex desc="Chemical exchange relaxation (800 MHz)"
ieee_754_byte_array="[197, 23, 28, 207, 173, 151, 0, 60]">
1.124351254e-19
Maybe the field strength associated with the values in the result file
are remnants of relax 1,.2, where Rex were given in s-1...
No, I would call that no very much chemical exchange at all. Model
selection should get rid of this model - unless of course the
equivalent model without Rex failed!
Regards,
Edward
Re: Rex value