DISP Instruction
DISP E f' f" [#] mu [#]
The DISP instruction allows the dispersion and (optionally) the absorption
coefficient of a particular element E (the name may be optionally prefaced by
'$') to be read in without having to use the full form of the SFAC
instruction. It will typically be used for synchrotron data where the
wavelength does not correspond to the values (for Cu, Mo and Ag radiation)
for which these terms are stored in the program. All other terms on the SFAC
instruction are independent of the wavelength, so its short form may then be
used. DISP instructions, if present, MUST come between SFAC and UNIT.