scintillation counter

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Introduction

An instrument used to quantify radioactivity.

Principle

When gamma rays or ionizing particles are absorbed by a scintillator, a pulse of visible or near UV light is emitted. The light is then detected by a photomultiplier tube either directly or internally through a reflecting optic fiber.

Crystal scintillation:

Liquid scintillation

More general terms

Additional terms

References

  1. Clinical Diagnosis & Management by Laboratory Methods, 19th edition, J.B. Henry (ed), W.B. Saunders Co., Philadelphia, PA. 1996, pg 70