Standard Article

Gamma-Ray Spectrometers

  1. Andrew M. Sandorfi1,
  2. Christopher J. (Kim) Lister2,
  3. Craig Woody3

Published Online: 15 OCT 2009

DOI: 10.1002/3527600434.eap460.pub2

Encyclopedia of Applied Physics

Encyclopedia of Applied Physics

How to Cite

Sandorfi, A. M., Lister, C. J. and Woody, C. 2009. Gamma-Ray Spectrometers. Encyclopedia of Applied Physics. 773–796.

Author Information

  1. 1

    Thomas Jefferson National Accelerator Facility, Physics Division, Newport News, VA, USA

  2. 2

    Argonne National Laboratory, Physics Division, Argonne, IL, USA

  3. 3

    Brookhaven National Laboratory, Upton, NY, USA

Publication History

  1. Published Online: 15 OCT 2009


Gamma rays are the highest energy photons in the electromagnetic spectrum. Their detection techniques exploit the different mechanisms by which they interact with matter. Factors affecting the determination of their total energy, position, and arrival time are discussed, along with the trade-offs encountered in large detector arrays.


  • Bremsstrahlung;
  • calorimeter;
  • cascade shower;
  • Cherenkov radiation;
  • Compton scattering;
  • hermiticity;
  • pair production;
  • photoelectric absorption;
  • photomultiplier tube;
  • spectral quality