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The functioning of the air wall chamber is like an electrical capacitor”. Explain how?

The functioning of the air wall chamber is like an electrical capacitor”. Explain how?


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An ionization chamber (air wall chamber)measures the charge from the number of ion pairs created within a gas caused by incident radiation.It consists of a gas-filled chamber with two electrodes; known as anode and cathode. The electrodes may be in the form of parallel plates (Parallel Plate Ionization Chambers: PPIC), or a cylinder arrangement with a coaxially located internal anode wire.

A voltage potential is applied between the electrodes to create an electric field in the fill gas. When gas between the electrodes is ionized by incident ionizing radiation, ion-pairs are created and the resultant positive ions and dissociated electrons move to the electrodes of the opposite polarity under the influence of the electric field. In such a way it acts as a electrical capacitor.

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