title: Filtered epithermal quasi-monoenergetic neutron beams at research reactor facilities.
abstract: Filtered neutron techniques were applied to produce quasi-monoenergetic neutron beams in the energy range of 1.5-133keV at research reactors. A simulation study was performed to characterize the filter components and transmitted beam lines. The filtered beams were characterized in terms of the optimal thickness of the main and additive components. The filtered neutron beams had high purity and intensity, with low contamination from the accompanying thermal emission, fast neutrons and γ-rays. A computer code named "QMNB" was developed in the "MATLAB" programming language to perform the required calculations.
authors.affiliation: Physics Department, Faculty of Science, Zagazig University, Egypt. Electronic address: mohamedmansy_np@yahoo.com.
authors.forename: M S
authors.initials: MS
authors.lastname: Mansy
authors.affiliation: Physics Department, Faculty of Science, Zagazig University, Egypt.
authors.forename: I I
authors.initials: II
authors.lastname: Bashter
authors.affiliation: Reactor Physics Department, NRC, Atomic Energy Authority, Cairo, Egypt.
authors.forename: M S
authors.initials: MS
authors.lastname: El-Mesiry
authors.affiliation: Reactor Physics Department, NRC, Atomic Energy Authority, Cairo, Egypt.
authors.forename: N
authors.initials: N
authors.lastname: Habib
authors.affiliation: Reactor Physics Department, NRC, Atomic Energy Authority, Cairo, Egypt.
authors.forename: M
authors.initials: M
authors.lastname: Adib
keywords: BNCT; Cross-section; Epithermal neutrons; Neutron filters; Quasi mono-energetic beams; Reactor beams