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INTRODUCTION
Harwell Alanine Pellets Harwell Alanine Pellets When pellets containing the amino acid alanine are irradiated, stable free radicals are produced in concentration which depends on exposure. The measured response to microwaves of the pellet placed in a manetic field of a paramagnetic resonance spectrometer, is quantitively related to the radiation dose which the pellet absorbed. Dose Range Alanine Pellets has a functional dose range of 0.1 kGy to 70 kGy (0.01 kGy to 100kGy may also be achieved) which makes it idea for almost any range of irradiation processes. Material
A white cylindrical pellet of alanine in a wax binder. 90.9% Amino acid L-alpha alanine 9.1% Paraffin wax Dimensions Diameter: 4.82mm +/- 0.01mm (5mm to special order) Height: 2.8mm +/- 0.1mm Mass: 60mg +/- 2mg within the overall batch, +/- 0.6mg within a lot. (standard deviation 0.3mg) Packaging Two Formats: Plain Pellets, bulk packed Alanine Pellets Dosimeters, consisting of pellets sealed in bar coded labelled aluminium foil blisters, packed 1,000 per carton. Measurement Reproducibility Mass: CV 0.5% Irradiation response: CV 0.5% NPL irradiated. (not packed) Performance Each batch is verified by NPL comparision. Shelf-life Eight years from the date of release.
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