Forest SolidState Detectors

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Solid state detectors are basically materials in which a radiation sensitive region of mobile carriers is established with a voltage. A gas chamber in solid form.


What is a semi-conductor

Energy gap:


The energy gap is about 1 eV for a semi-conductor and about 6 eV for an Insulator. In a Conductor, there is no energy gap. The Valence and Conduction bands overlap.


Forest SemiConductorEnergyGap.gif

COnductor

Silcon is the most commonly used material for such detectors. Germanium, Gallium-Arsenide, and diamond are also used.

A min ionizing particle liberates about 300 fC (22000 electrons) in a 300 [math]\mu[/math] m thick piece of silicon.

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