semiconductor-based radiation detector

X선 영상장비를 이용해 촬영한 골프볼 내부 모습. 골프볼은 한덩어리가 아니라, 3개의 밀도가 다른 층으로 구성되어 있음을 볼 수 있다.

Schematic of a simple planar detection system . For completeness, we also show the signal chain and the evolution of currents and voltages. Reference: A. Owens, “Semiconductor Materials and Radiation Detection,” J. Synchrotron Radiation, Vol. 13, part 2 (2006) 143–150.

The Frisch grid is named after the austrian–british physicist Otto Robert Frisch.Basically it is a grid made of a conductive material that is typically placed between the cathode and anode in ionization chambers and is commonly on ground potential or weakly charged.The Frisch grid brings two advantages: The height of a puls measured in a ionizationchamber depends on the location of the primary i..

First CdMnTe ingot grown by seedless THM. It is one inch diameter and 3 inch length. We made 6 x 6x 12 mm3 virtual Frisch-grid detector with CdMnTe. Pulse height measurement with CdMnTe detector 6.7 % and 2.1 % energy resolution with Co-57 and Cs-137.