For Panalytical X-Pert Pro XRD machine, there are 3 parameters are in play, step time, scan rate, and scan speed. Can anyone help me to get the relationship between these three? Like how can I calculate scan speed using step time and scan rate?
Dear Nilabja Kanti Sarkar ,
whereas the 'step time' (= time interval for the acquisition of the detector signal in e.g. [s]) and the 'scan speed' (= scan angle in theta per time interval e.g. in [deg/s]) are quite intuitive, there is nearly no information on how the 'scan rate' is defined.
Nevertheless in an manual (written by Scott. A. Speakman) I found the 'scan rate':
please see for example page 10 of:
http://prism.mit.edu/xray/documents/PAN%20OEC%20SOP.pdf *)
According to page 10 unfortunately this term covers both, the 'step time' and the 'scan speed' and is apparently a synonym for the duration of the total measurement time (total acquisition time) of the XRD pattern.
'step time' * 'number of steps' = 'total acquisition time'
'Scan speed' = 'step width'/ 'step time' = 'scan interval'/'total acquisition time'
But the term 'scan rate' does not show up here.
*) if this link does not work via a click, please copy that link and open it at a separate window page in your browser.
Best regards
G.M.
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