EN
BDER-KI-11K
Silicon detection block with thermoelectric cooling BDER-KI-11K.
It is designed to convert the energy of X-ray and low-energy gamma radiation quanta into electrical signals proportional in amplitude and amplify them for subsequent recording by spectrometric equipment.
MAIN ADVANTAGES:
- high energy resolution;
- excellent background characteristics;
- small dimensions and weight;
- does not require liquid nitrogen;
- arbitrary spatial orientation.
Application areas: nuclear energy, geology, metallurgy, environmental control systems, recycling, customs control and forensics.
Can be used as part of X-ray fluorescence analyzers for rapid determination of the elemental composition of a substance.
The detection unit is designed to operate in conditions corresponding to the UHL category 5.1 GOST 15150-69.
MAIN TECHNICAL CHARACTERISTICS:
| No. |
Name of the characteristic |
Meaning |
|
1 |
The area of the sensitive surface of the detector |
7 mm2 and 12 mm2 |
|
2 |
Thickness of the sensitive area of the detector |
300 microns |
|
3 |
Energy resolution of 5.9 keV with a shaping time constant of 10 µs for the detector: - with an area of 7 mm2 - with an area of 12 mm2 |
no more than 200 eV no more than 250 eV |
|
4 |
Energy resolution of 59.6 keV with a shaping time constant of 10 μs for the detector: -with an area of 7 mm2 -with an area of 12 mm2 |
no more than 200 eV no more than 250 eV |
|
5 |
Ratio of the peak height of total absorption for energy 5.9 keV to the level of continuous amplitude distribution for energy 3.5 keV (peak/background) |
not less than 800 |
|
6 |
Thickness of the entrance beryllium window: - standard - by special order |
25 microns 12 µm and 8 µm |
|
7 |
Conversion coefficient at load not less than 1 kOhm |
not less than 1 mV/keV |
|
8 |
Output impedance |
75±1 Ohm |
|
9 |
Output signal polarity |
negative |
|
10 |
Maximum detector bias voltage at current less than 1 µA |
100V |
|
11 |
Preamplifier supply voltage at maximum current 35 mA |
12V |
|
12 |
Maximum cooler current |
0.7A at 1.6V |
|
13 |
Weight |
no more than 0.25 kg |
|
14 |
Overall dimensions |
15x61x34 mm |
Fig. 1. Block connection diagram
Fig. 3 Efficiency of Si(Li) and Si-pin detectors depending on energy and thickness of Be-window
Fig. 2. Detection unit BDER-KI-11K
