Measuring neutron fluences and gamma/x-ray fluxes with CCD cameras
- Los Alamos National Lab., NM (United States)
- Ministry of Defense, Aldermaston (United Kingdom). Atomic Weapons Establishment
- EG and G Energy Measurements, Inc., Goleta, CA (United States). Santa Barbara Operations
The capability to measure bursts of neutron fluences and gamma/x-ray fluxes directly with charge coupled device (CCD) cameras while being able to distinguish between the video signals produced by these two types of radiation, even when they occur simultaneously, has been demonstrated. Volume and area measurements of transient radiation-induced pixel charge in English Electric Valve (EEV) Frame Transfer (FT) charge coupled devices (CCDs) from irradiation with pulsed neutrons (14 MeV) and Bremsstrahlung photons (4--12 MeV endpoint) are utilized to calibrate the devices as radiometric imaging sensors capable of distinguishing between the two types of ionizing radiation. Measurements indicate {approx}.05 V/rad responsivity with {ge}1 rad required for saturation from photon irradiation. Neutron-generated localized charge centers or ``peaks`` binned by area and amplitude as functions of fluence in the 10{sup 5} to 10{sup 7} n/cm{sup 2} range indicate smearing over {approx}1 to 10% of CCD array with charge per pixel ranging between noise and saturation levels.
- Research Organization:
- Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)
- Sponsoring Organization:
- USDOE, Washington, DC (United States)
- DOE Contract Number:
- W-7405-ENG-36
- OSTI ID:
- 10103696
- Report Number(s):
- LA-UR-91-3526; CONF-911106-29; ON: DE92003863
- Resource Relation:
- Conference: 1991 Institute of Electrical and Electronic Engineers (IEEE) nuclear science symposium and medical imaging conference,Santa Fe, NM (United States),2-9 Nov 1991; Other Information: PBD: [1991]
- Country of Publication:
- United States
- Language:
- English
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Measuring neutron fluences and gamma/x-ray fluxes with CCD cameras
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Related Subjects
46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY
CHARGE-COUPLED DEVICES
PERFORMANCE
GAMMA RADIATION
MEASURING METHODS
X RADIATION
NEUTRON FLUENCE
SIGNALS
TELEVISION CAMERAS
BREMSSTRAHLUNG
IONIZING RADIATIONS
SIGNAL CONDITIONING
NOISE
426000
440103
COMPONENTS
ELECTRON DEVICES AND CIRCUITS
NUCLEAR SPECTROSCOPIC INSTRUMENTATION