Continuing in the tradition of its bestselling predecessors, this third edition illustrates the fundamentals of nuclear interactions and radiation detection with a multitude of examples and problems. It offers a clearly written, accessible introduction to nuclear instrumentation concepts. This edition provides a new chapter on the latest applications of radiation detection, including nuclear medicine, dosimetry, health physics, homeland security, and nuclear nonproliferation; updates numerous topics as needed; and incorporates many new references and a completely updated bibliography.