Needle Sources – Spectrum Techniques

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Needle sources are used to generate a point source of radiation inside cloud chambers for demonstrating alpha and beta radiation tracks. Three different types of isotopes are offered, a pure alpha emitter, a pure beta emitter and a combined alpha /beta emitter.

The sources are constructed by depositing a small, license exempt quantity of radioactive isotope onto the eye of a standard sewing needle which is mounted on a test tube stopper for insertion into the cloud chamber. The needle and stopper are placed into a test tube for protection during shipping and storage.

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Spectrum Techniques, established in 1993, specialises in the production of nuclear counting equipment and U.S. NRC ‘Exempt Quantity’ radioactive sources. The product lineup encompasses an extensiv...

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Needle sources Datasheet

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