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Alkaline
Metals Biphthalate single crystals are used in x-ray spectral analysis
as analysing crystals in a long wave spectral area. The analysing crystals
serve to separate the X-radiation into spectrum. The usage of these
crystals enables a qualitative and quantitative analysis of light elements
(Fe, Al, Mg, F, Si), due to their lattice (of up to 2.6 nm). The plasticity
and high fissionability of these crystals facilitates the production
of fine plates (0.2 - 0.5 mm) for focusing analyzers. Biphthalate crystals
are stable in a vacuum.
| Potassium
Biphthalate |
KAP
|
C6H4
(COOH) (COOK) |
| Cesium
Biphthalate |
CsAP
|
C6H4
(COOH) (COOCs) |
| Rubidium
Biphthalate |
RbAP
|
C6H4
(COOH) (COORb) |
| Ammonium
Biphthalate |
NH4AP
|
C6H4
(COOH) (COONH4) |
By
increasing the cation radius, the reflection integral coefficient increases
as well. Therefore these crystals, for example CsAP, could be effectively
used for qualitative x-ray spectral analysis of various materials and
for overall spectra of remote astrophysical objects obtainment.
By decreasing the cation radius, the resolving capacity
of the method increases. The usage of such crystals, for example NH4AP,
as analysing crystals in x-ray spectrometers enables substantial extension
of their resolving capacity in 0.8 - 2.5 nm. |
MAIN
PROPERTIES:
| Crystal |
|
NH4AP |
KAP |
RbAP |
CsAP |
| Reflection
surface 2d, nm |
|
5.226
(001) |
2.664
(001) |
2.590
(001) |
2.568
(001) |
| Peak
reflection coefficient Pc, % |
Sik±,
0.712 nm |
10.0 |
5.0 |
20.0 |
20.0 |
|
Alk±,
0.834 nm |
7.5 |
12.0 |
15.0 |
17.0 |
|
Mgk±,
0.989 nm |
6.5 |
10.0 |
8.0 |
8.0 |
|
Nak±,
1.191 nm |
5.0 |
7.0 |
6.2 |
4.2 |
|
Cul±,
1.336 nm |
5.4 |
5.5 |
6.0 |
6.3 |
|
Fek±,
1.831 nm |
7.6 |
2.0 |
6.0 |
6.5 |
| Reflection
integral coefficient, Rc x 105 rad |
Sik±,
0.712 nm |
1.3 |
2.0 |
4.5 |
4.7 |
|
Alk±,
0.834 nm |
1.1 |
3.1 |
4.5 |
5.0 |
|
Mgk±,
0.989 nm |
1.2 |
3.3 |
4.8 |
4.8 |
|
Nak±,
1.191 nm |
1.3 |
3.8 |
4.9 |
5.7 |
|
Cul±,
1.336 nm |
1.4 |
4.2 |
5.3 |
6.0 |
|
Fek±,
1.831 nm |
1.8 |
4.9 |
9.0 |
10.0 |
We supply as-cut
blanks up to 100 x 50 x 25 mm3
as well as elements made upon customers' specification.
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