Improve mechanical strength of KCT-300 TL pellet

P-compound of 10mol%(about 7.8wt%) embedded CaSO4:Dy TL pellet(KCT-300) was developed by KAERI. KCT-300 has high sensitivity and good dosimetric characteristics than Teflon embedded CaSO4:Dy TL pellet. But, mechanical strength of KCT-300 is not good. Essentially the mechanical strength is improved with increased the P-compounds concentration, but TL sensitivity is decreased relatively. In the case of high P-compounds concentration, surface of KCT-300 is rugged after sintering. So, it is too difficult that improve the mechanical strength of KCT-300 as raise P-compounds concentrate. This paper presented the method for raise mechanical strength of KCT-300. In this research, high temperature treatment process after P-compounds embedded CaSO4:Dy TL phosphor added to fabrication process of KCT-300