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BT-1 High Resolution Powder Diffractometer
Instrument Response Function

BT1 Resolution for the function Q

BT-1 instrumental resolution as FWHM(Q) (Å-1) as a function of Q (Å-1) using each of the three monochromators and looking at both the 7' and 15' collimation.


Monochromator information

Monochromator in-pile
Collimation
(arcmin)
Monochr.
2Theta
Relative
Bragg
Intensities
Flux
(n s-1cm-2)
Wavelength
(Å)
Relative # of
reflections
Ge(311) 60' 75o 5.78 1,160,000 2.079 50
Ge(311) 15' 75o 2.86 570,000 2.079 50
Ge(311) 7' 75o 1.44 290,000 2.079 50
Cu(311) 60' 90o 1.84 870,000 1.540 100
Cu(311) 15' 90o 1.00 440,000 1.540 100
Cu(311) 7' 90o 0.54 230,000 1.540 100
Ge(733) 60' 120o 0.31 330,000 1.197 200
Ge(733) 15' 120o 0.20 200,000 1.197 200
Ge(733) 7' 120o 0.11 120,000 1.197 200


Last modified 15-December-2011 by website owner: NCNR (attn: )