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Microtron MT 25 as a source of neutrons
1Czech Metrology Institute, CZ-102 00 Prague 10, Czech Republic. mkralik@cmi.cz
The Review of Scientific Instruments
|September 4, 2012
Summary
The Microtron MT25 generates neutrons using photonuclear reactions for space applications. This study characterizes its neutron output for testing space-bound neutron-sensitive devices.
Area of Science:
- Nuclear Physics
- Radiation Detection
Background:
- Microtron MT25 facility utilizes electron acceleration to produce bremsstrahlung photons.
- Photonuclear reactions in Uranium (U) and Lead (Pb) targets are employed for neutron generation.
Purpose of the Study:
- Characterize the Microtron MT25 as a neutron source.
- Determine the spectral fluence and yield of neutrons produced.
- Assess the ambient dose equivalent rate for practical applications.
Main Methods:
- Neutron spectral fluence calculated using MCNPX code.
- Experimental determination of spectral fluence using a Bonner spheres spectrometer.
- Activation detectors (Mn tablets) and track detectors (CR-39 with B-10 radiator) used for neutron detection.
Main Results:
- Calculated and measured neutron spectral fluence were compared.
- Neutron yield from U and Pb targets was estimated.
- Ambient dose equivalent rate was determined at measurement points.
Conclusions:
- The Microtron MT25 is a viable neutron source for testing neutron-sensitive devices.
- Characterization data are crucial for calibrating and validating instruments for space missions.
- The study provides essential parameters for the safe and effective use of the MT25 facility.
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