Imagine the Universe!
Imagine Home | Science |

X-ray Detectors

The proportional counter, to date the most widely used type of on-orbit X-ray detector, is a relative of the Geiger counter. It was first developed to detect charged particles and gamma-rays emitted by radioactive material here on Earth.

Imagine the Universe is a service of the High Energy Astrophysics Science Archive Research Center (HEASARC), Dr. Nicholas White (Director), within the Laboratory for High Energy Astrophysics at NASA's Goddard Space Flight Center.

The Imagine Team
Project Leader: Dr. Jim Lochner
All material on this site has been created and updated between 1997-2004.

CD Table of Contents