Re: Re: confusion about some GSAS parameters

[prasunsc]

Dear all,
         So, for the case of a brag brenteno diffractometer without any 
monochromator, will the value for POLA should be fixed to zero??
         Another problem is that, negative value is coming in trns when i am 
refining it. is it physically acceptable?
                                                     thanking in advance....
                                                                             
prasun