Table 2. RESIK Crystal Characteristics

Section A A B B
Crystal No. 1 2 3 4
Material Si Quartz Si Quartz
Plane 111 1010 111 1010
Bent radius [mm] 1110 1450 1000 525
2d [Å] 6.27122 8.510558 6.27122 8.510558
Wavelength range - - - -
1st order [Å] 3.369-3.879 4.307-4.890 3.821-4.326 4.960-6.086
Average reflecting propertiesa - - - -
1st order l[Å] 3.579 4.599 4.073 5.523
Rc [mrad] 51 20 50 17
FWHM [mrad/arcsec] 84/17 62/13 113/23 94/19
Peak reflectivity [%] 51 24 36 13

a - from Cowan & Brennans Code (Brennan S. and Cowan P.L.: 1992, Rev. Sci. Instr., 63, 850), assuming perfect crystals. Thanks to Charlie Brown

 

Table 1: Diogeness Characteristics

Channel 1 2 3 4
Crystal Quartz ADP Beryl Quartz
Plane 1011 101 1010 1011
2d1 Å 6.6855 10.5657 15.9585 6.6875
lobs [ Å] 3.1779 5.0348 6.6492 3.1779
ltheor [ Å] 3.1781 5.0374 6.6488 3.1781
Line Ca XIX S XV  Si XIII CaXIX
lmin [ Å] 3.1436 4.9807 6.1126 2.9601
lmax [ Å] 3.3915 5.3721 6.7335 3.2123
RC [mrd] 91 91 15 90
FWHM [arcsec] 24.1 68.1 94.1 25.6

                                                                           RC - The total reflection coefficient.

 

Channel

1

2

3

4

Crystal

 

 

 

 

Plane

 

 

 

 

2d1Å