DIRECT CONVERSION X RAY DETECTOR

摘要

The invention relates to a radiation detector (100) comprising a converter element (102) for converting incident high-energy radiation (X) into charge signals. A cathode (101) and an array(104) of anodes (103) are disposed on different sides of the converter element(102) for generating an electrical field (E0, Ed) within it. The strength of said electrical field(E0, Ed) is increased in a first region(Rd) near the anode array(104) with respect to a second region(R0) remote from it. Such an increase may be achieved by doping the first region(Rd) with an electron acceptor. The increased field strength in the first region(Rd) favorably affects the sharpness of charge pulses generated by incident radiation.