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NEUTRON FIELD MEASUREMENT OF P(35)+Be SOURCE USING THE MULTI-FOIL ACTIVATION METHOD
Milan Stefanik1,2, Pavel Bem1, Mitja Majerle1
1Nuclear Physics Institute of The Czech Academy of Sciences p.r.i., 25068 Rez 130, Czech Republic.
Researchers characterized the neutron field from proton-beryllium interactions. The resulting neutron flux is suitable for radiation hardness studies and integral benchmark experiments for the International Fusion Material Irradiation Facility program.
Area of Science:
- Nuclear Physics
- Materials Science
Background:
- Neutron fields are crucial for materials research.
- Characterizing neutron fields is essential for radiation hardness studies.
Purpose of the Study:
- To investigate the neutron field generated by p+Be interactions.
- To determine neutron spectra for radiation hardness studies and integral benchmark experiments.
Main Methods:
- Multi-foil activation technique with dosimetry foils (Ni, Co, Au, In, Ti, Al, Y, Lu, Nb, Fe).
- Neutron energy spectra reconstruction using SAND-II unfolding code and EAF-2010 cross-section library.
- Monte Carlo MCNPX calculations for system simulation.
Main Results:
- Broad neutron spectra were determined at close source-to-sample distances.
- Fast neutron flux up to 10^10 cm^-2 s^-1 was measured.
- The neutron field was validated for use in radiation hardness studies.
Conclusions:
- The p+Be neutron field at 35 MeV is well-characterized.
- The neutron field is suitable for International Fusion Material Irradiation Facility (IFMIF) related integral benchmark experiments.
- The study provides essential data for fusion materials research.
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