Detection block BDMN-100 is intended to measure the parameters of neutron radiation fields in a wide range of neutron energies.
Output signal – a sequence of normalized, statistically distributed pulses contains measuring data about the power of the equivalent of ambient dose Ḣ * (10) (PED) of neutron radiation.

Energy range of registered neutron radiation

From 0,025 eV to 10,0 MeV

Sensitivity*, s-1·on 1 mkZv·h-1

0,5±0,12

upper limit of the measured PED of neutron radiation *, mkZv·h-1

1·105 mkZv·h-1

Energy dependence of sensitivity for typical neutron spectra *, %

40,0

Type of the detector

Plastic scintillator

+ ZnS(Ag)

Functionality control

light-emitting diode. A single impulse.

Overall dimensions, mm

320 х 254 х 250

Mass, kg

11,5

Connecting cable length, m

20,0 (may be increased up to 200 m)

Note * – radiation of the source Pu-α-Bе

ELECTRICAL CHARACTERISTICS

Power supply – dc voltage from 7,0 to 12,0 v. the consumed current is not more than 30 ma.

Designation of the block contacts (plug pc-10)

Contact

Signal designation

Commentaries

1

+ Uп

7,0 – 12,0 В

3

Control

It is set from the external device: a single pulse to the LED is formed in the block when applying a low-level (the rate of the decline is not specified) This single pulse  illuminates the ФЕУ. A single  output pulse appears at the output of the block. power supply is taken as the highest level

4

Output

Output:
BDMN-100: negative square-wave pulses with an amplitude of at least 4.5 V, duration (1,5 ± 0,5) s;
BDMN-100-01:  positive square-wave pulses of an amplitude of at least 4.5 V, duration (1,5 ± 0,5) s;
BDMN-100-02: Negative square-wave pulses of an amplitude of at least 11.5 V, duration (1,5 ± 0,5) s;
BDMN-100-03: positive square-wave pulses of an amplitude of at least 11.5 V,  duration (1,5 ± 0,5) ms

9

┴

Screen is connected to contact 10

10

General

General is connected to contact 9
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