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Extending the dose range of the red 4034 PMMA dosimeter by Brian Whittaker; Roger Bett; Maureen E. Plested; Michael F. Watts is a Materials Science article available to read on EtoBox.

What is Extending the dose range of the red 4034 PMMA dosimeter about?

The working absorbed dose range of the radiation-processing dosimeter Harwell Red 4034 PMMA is normally quoted as 5-50 kilograys, because below a gamma radiation dose of 5 kGy spectrophotometric measurement precision deteriorates, and above 50 kGy the reduced slape of the optica1 absorbance versus dose curve, due to approaching saturation of the radiation induced colouration, would notionally cause significant increases in overall dose measurement uncertainty with increasing dose. However, dosimetric uncertainty studies are sparse, and there are no reported studies that would unequivocally support the choice of 5-50 kGy as the ideal range. Two batches of Red 4034 dosimeters have been studied over a wider gamma radiation dose range than normal, 1~100 kGy, and a mathematica] model has been used to interpret the resulting specific optica1 absorbance and standard deviation data

Who reads Extending the dose range of the red 4034 PMMA dosimeter?

Author

Brian Whittaker; Roger Bett; Maureen E. Plested; Michael F. Watts

Publisher

Elsevier Science; Elsevier ; Elsevier Ltd.; Elsevier BV (ISSN 0969-806X)

Published

1997

Language

EN

Field

Materials Science (Physical Sciences)