This paper describes the design and development of new polymers for solid state nuclear track detection. A monomer triallyl phosphate (TAP) has been synthesized and cast homo/ copolymerized with allyl diglycol carbonate (ADC) to get transparent thin films of poly(triallyl phosphate) (PTAP) and poly(TAP-co-ADC) polymers respectively, which were successfully explored for the first time for detection of alpha particles and fission fragments. The polymerization kinetics studies were carried out to generate constant rate polymerization profile for TAP and TAP: ADC monomer mixture. Poly(TAP-co-ADC) copolymer in 3:7 wt./wt. ratio showed better radiation sensitivity as compared to indigenously prepared PADC and commercially available CR-39 detectors.

CR-39 is a solid state nu clear track de tec tor, chem i cally known as poly-allyl-diglycol-car bonate, widely used for per son nel neu tron mon i tor ing be cause of its sen si tiv ity to neu trons, excel lent op ti cal prop er ties that fa cil i tate the anal y sis and suf fi ciently long shelf life. Pres ently, this de tec tor is im ported and is be ing used for the per son nel neu tron mon i tor ing programme in In dia. Hence, an ef fort was made to wards the in dig e nous de vel op ment of these de tec tors. Dif fer ent chem i cal pro cesses for the in dig e nous de vel op ment of the poly-allyl-diglycol-carbon ate de tec tor, such as the syn the sis of allyl-diglycol-car bon ate mono mer and isopropylperoxydicarbonate as ini ti a tors for the poly mer iza tion pro cess, were car ried out and are reported in this pa per. A method for cast ing un bro ken poly-allyl-diglycol-car bon ate sheets sized 25 cm ´ 15 cm and of a thick ness be tween 500 µm and 800 µm was de vel oped. A lon ger poly mer iza tion pro cess also helps to in crease neu tron sen si tiv ity, re duce the min i mum de tection limit and in crease the sig nal-to-noise ra tio of the de tec tor. The study sug gests that it is pos si ble to de velop in dig e nous poly-allyl-diglycol-car bon ate de tec tors with a min i mum detec tion limit of 0.1 mSv and sig nal-to-noise ra tio of 8.0.

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