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DIAMOND X-RAY POLARIZER - combined with capillary optics (Kumakhov
optics) |
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APPLICATION AREA:
Compact high-
sensitive X-ray spectrometer
on the basis
of the polarized radiation of X-ray source |
Polarization at
coherent and incoherent scattering
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-
The ratio of the
energies for scattered
and primary X-ray photons,
-
The azimuth angle
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The angular dependence of the transmission
coefficient
for
a diamond board
(110)
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The scheme for generation and
monochromatization, and polarization
of the X-ray radiation
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Max
power
- 50 W
Max voltage
- 50
ęV
The anode’s material of the X-ray tube
- Cu, Mo
The spot size for the focus of X-ray tube
- no more 20
ěęě
X-ray tube
- sealed,
mirror anode
Mode of operation
- permanent
Total weight of the system
- no more 25
ęg
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D=300 mcm
Dq=4
mrad,
I=5 108 phot/ń,l=0,154
nm
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General view of a micro-focal X-ray source with a
poly-capillary half-lens
“Laboratory
synchrotron”
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G
– X-ray generator,
F
–
The shaper of the directed X-ray beam
on the basis of the poly-capillary
optics
D1
–
The semiconductor
spectrometer detector,
D2
– The adjustment scintillator
detector,
S1,S2
– Slit diaphragms,
sample
– The sample under investigation.
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Spectra of scattered radiation from a Sn foil
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The basic results of X-ray polarizer
The decreasing of a background at x-ray polarization:
E=8,05
kV
-
90
times
At band 4,5-8
kV
-
60 times
Intensity of the polarized X-ray radiation
at P=20 W -
2,5
×
106
phot/s
Peak reflection
coefficient
–
14%
The degree of X-ray polarization
–
99,85%
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