SI9AM-1

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Alpha-Radiation Counter

SI9AM-1. Geiger-Muller counter of alpha-radiation


Main characteristics

Stable corona firing voltage

V

460 max

Working voltage

V

470

Plateau length

V

450 ÷ 520

Plateau slope

% / V

0,2 max

Efficiency to alpha radiation 5.15 MeV

%

34 min

Permissible background gamma radiation

count / μR

10000 max

Average corona current

μA

1 max

Metalized mica window area

cm2

7 - 8

Interelectrode capacitance

pF

1,7

Operating temperature range °С -40 ÷ +50

Life expectancy

count

2500

Weight

g

18

 

Overall dimensions

Counter of alpha-radiation SI9AM-1

The scheme of connection

Alpha-radiation counter SI9AM-1

R

6-8 МΩ

C1

30 – 50 pF

C2

8 – 12 pF (circuit capacitance)

PV

Voltmeter

A

Amplifier 30mV

BD

Counter

on top

Дополнительная информация