The TOF-USANS Instrument for Japanese SNS - Spallation Neutron ...

Si (111)
Si (220)
Calculated characteristic of TOF-USANS for JSNS -2-
Intensity (arb. units)
Intensity (arb. units)
10 12
10 11
10 10
10 9
10 8
10 7
10 6
10 5
10 12
10 11
10 10
10 9
10 8
10 7
10 6
10 5
-10
-10
Central part of 2nd Si rocking curve
-5
-5
0
0
5
10
θ−θΒ (µrad)
5
10
θ−θΒ (µrad)
λ/1=0.255 nm
15
(111)
(333)
(444)
(555)
(777)
(888)
(999)
20
λ/1=0.255 nm
15
(220)
(440)
(660)
(880)
(10 10 0)
(12 12 0)
(14 14 0)
20
25
25
Intensity (arb. units)
Intensity (arb. units)
10 12
10 11
10 10
10 9
10 8
10 7
10 6
10 5
10 12
10 11
10 10
10 9
10 8
10 7
10 6
10 5
Central part of 2nd Si rocking curve in q-scale
10 -6
10 -6
10 -5
10 -5
10 -4
q (nm -1 )
10 -4
q (nm -1 )
λ/1=0.255 nm
10 -3
10 -3
(111)
(333)
(444)
(555)
(777)
(888)
(999)
λ/1=0.255 nm
(220)
(440)
(660)
(880)
(10 10 0)
(12 12 0)
(14 14 0)
We assumed that the reflectivity of the pre-monochrometer to the neutron which diffracts dynamically on Si crystals was equal.
10 -2
10 -2