Harwell Dosimeters
Harwell Dosimeters Ltd
540 Becquerel Avenue
Harwell Science and Innovation Campus
DIDCOT, Oxfordshire
OX11 0TA
United Kingdom
Tel: +44 (0)1235 435704
Fax:+44 (0)1235 436313
E-mail: Harwell Dosimeters

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Dosimeter Systems for Radiation Processing

Harwell Dosimeters Limited manufacture dosimeters for the radiation processing industry.

Dosimeters

Dose Range

View Gammachrome YR specification 0.1 to 3kGy
View Amber 3042 specification 1 to 30kGy
View Red 4032 specification 5 to 50kGy

View response curves

Three types, Red 4034, Amber 3042, and Gammachrome YR are made from radiation-sensitive poly-methylmethacrylate (pmma) in the form of optically transparent pieces individually sealed in laminate sachets.

They darken when irradiated, and the radiation-induced darkening, accurately measurable by means of a spectrophotometer, is a function of the radiation dose absorbed. 

The fourth type are pellets made of the amino acid alanine in a wax matrix.  They are available as plain pellets, or individually sealed in aluminium blisters.

On irradiation a stable radical is produced, which enables delivered radiation dose to be measured using a paramagnetic resonance spectrometer.

Dosimeters

Dose Range

Alanine Pellets 10Gy to 100kGy
Radspin® Dosimeters 10Gy to 100kGy


HARWELL Dosimeters Ltd
540 Becquerel Avenue, Harwell Science and Innovation Campus,
DIDCOT, Oxfordshire OX11 0TA, United Kingdom

Tel: Orders and General Enquiries +44 (0)1235 435704
Tel: Special Requirements +44 (0)1235 435707
Fax: All fax +44 (0)1235 436313
E-mail: dosimeters@harwell-dosimeters.co.uk