Sectioned apparatus for thermoluminescent dating of pottery

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Science Museum Group Collection
© The Board of Trustees of the Science Museum, London

Science Museum Group Collection
© The Board of Trustees of the Science Museum, London

Apparatus (sectioned) for thermoluminescent dating of pottery, comprising a heating chamber, a photomultiplier and a gamma particle counter with a spare gamma counting ring

The photomultiplier converts thermoluminescent (TL) light to an electric current which is amplified.

By the judicious use of filters the unwanted infa-red radiation and the red and yellow light of background incandescence in the oven is eliminated, allowing only blue light to reach the cathode. Here the light is converted to electrons and the signal is amplified in the photomultiplier cells.

This electron signal is fed to a chart recorder producing a glow curve or plot of TL intensity versus temperature.

Details

Category:
Experimental Chemistry
Object Number:
1977-188
type:
thermoluminescence dating
taxonomy:
  • component - object
  • thermionic valve
  • vacuum valve
  • processes and techniques
  • measuring
  • dating
credit:
Professor E.T. Hall.