Skip to Main Content U.S. Department of Energy
Sensors & Electronics

Sensors & Electronics

Nuclear Radiation Sensors

Graphic of cargo volume, gamma-ray emissions, detector array and the flow to detector physics and data analysis algorithms

Nuclear Contraband Detector Instrument (429)

Problem: Need handheld instrument to identify gamma-ray emitting radioisotopes and to indicate direction to radiation source.

Project Activity Scope (from Technical Overview Chart): Interaction Mechanisms through Controls and Measurements.

PNNL Solution:

  • Used CdZnTe crystal detector array to detect gamma-ray emissions
  • Developed data analysis algorithms based on gamma-ray/detector interactions* and detector geometry to identify the radioisotopes in source and probable direction to the source
  • Analytically evaluated algorithms performance prior to implementation

(*Compton scattering.)

Capabilities Employed to Meet Client Needs: Modeling of gamma-rays with detector array material; algorithm development based on radiation/material interactions and array geometry; sensor interface development; system integration; lab testing.

Selected Links to Related Information:

Contact: Carolyn Seifert

Sensors & Electronics

Related Information

Search S&E

Nuclear Radiation Sensors

Nuclear Radiation Sensors

S&E Website Contacts