Sensitization of thermoluminescent dosimeter CaSO4:Dy by co-doping with Mn in particular proportion for measurement of low radiation doses and the method of preparation of CaSO4

Technology Description

It relates to a thermoluminescent phosphor for the measurement of low radiation doses, comprising calcium sulphate (CaSo4), Dysprosium(Dy) and manganese (Mn), wherein Dy and Mn are present as dopants. Thermoluminescent phosphor (CaSo4:Dy,Mn) is ultrasensitive, easy to prepare, can measure low radiation doses and cost effective. The procedure of preparation of CaSo4 is based on recrystallization method in which there is a chemical incorporation of the dopants Dysprosium and Manganese in the host matrix CaSO4.The ratio of the two dopant's quantities have been optimized so as to produce a sample of the highest thermoluminescent intensity CaSO4:Dy. It is less fading and has higher sensitivity. It can be used for radiation dosimetry (measurement of radiation doses) in those radiation areas where small radiation doses are involved (like medical imaging).

Institution: AIIMS

Category : Device

Cost effective : Yes

In vivo studies : No

Life of Patent : Not yet granted

Validation : Yes

Prototype : Bench scale-Yes

Public health relevance : Yes

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