Made by Centronic Limited | Science Museum Group Collection

Model of gamma compensated ionisation chamber type RC6, made by 20th Century Electronics in 1967. The ionisation chamber contains two oppositely-charged electrodes arranged so that, when the gas is ionised (ie: by X-rays), the ions are drawn to the electrodes, creating a current. This is used as a measure of the intensity of the ionising radiation. The model was made for, and presented to, Gilbert Tomes by his workforce at 20th Century Electronics (Later Centronic Ltd)

Model of gamma compensated ionisation chamber type RC6

1967

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Model of BF3 neutron proportional Geiger counter

Boron steel balls for use in reactor safety systems

Presentation model of field ion microscope

Boron carbide pellets

Neutron Detector

Smart Ion Detector, made by Centronic Ltd., New Ad

Model of solid state radiation detector

Type M2N Geiger-Muller tube

Model of Harries 'sunflower' projection cathode ray tube

Pulse Fission Detector, c 1996

Model thin walled beta-sensitive Geiger-Muller tube

Model of travelling wave deflection cathode ray tube

Model of metal bodied end window Geiger-Muller tube

Model of stable isotope separation plant

Experimental type 2P Geiger-Muller tube

Model of REM/N neutron dose equivalent counter

All-metal end window Geiger-Muller tube assembly

Boron steel plate for use in reactor safety systems. Made by 20th Century Electronics 1958-70 on a large scale

Model of gamma compensated ionisation chamber type RC6

Model of fission Geiger counter type FC4

Type IB2 Geiger-Muller tube assembly

Isotope separation plant, 1977-1978.