Radiation is described as the particles or energies emitted through radioactive matter. The most common types of radiations are gamma rays, alpha particles, X-rays and beta particles. Radiation detectors refer to those devices that detect and transmit information about incoming radiation. They are useful in biology, medicine, physics and geology. Generally, radiation detectors are not capable of capturing radiated particles and they do not even observe the radiation itself. The detectors search for the trails which radiation has left behind. The objective behind the design of detectors is the creation of an environment where radiation signature can be easily written. This book brings forth some of the most innovative concepts and elucidates the unexplored aspects of detectors for particle radiation. It will serve as a valuable source of reference for graduate and postgraduate students.