Characterization of photo-neutrons produced by 150 MeV and 1 GeV electrons impinging on high Z-metallic targets for neutron resonance spectroscopyElTayeb ElSaady ; Afaf A. Nada ; Abu-Zeid, Hosnia ; Mustafa M. M. ElAshmawy
AbstractABSTRACT Monte Carlo calculations have been performed using MCNP code to study the generation, angular distribution and energy spectrum of photo-neutrons for 1 GeV and 150 MeV electron beam energies impinging on different thickness of Tungsten, Tantalum and Lead targets. It is noticed that the photo-neutron yield increases as the target thickness increases then saturates beyond an optimized thickness of the target. Moreover, the photo-neutron yield shows significant increase as the electron energy increases. At the optimized thickness, the angular distribution of photo-neutrons is found almost isotropic for 150 MeV electrons and anisotropic for 1 GeV electrons. Further, by increasing the electron energy and/or the target thickness the angular distribution is found to be forward peaked. The energy spectrum of photo-neutrons can be well described by a Maxwellian distribution for both electron energies. Such calculations can help in developing a photo-neutron source based time of flight facility (TOF) for elemental and isotopic identification via neutron resonance spectroscopy. Photo-neutron yields, angular distribution, mean energy, energy spectrum and nuclear temperature for 1 GeV and 150 MeV electron energies and different target materials are presented.
|Keywords||photo-neutron, angular distribution, Monte Carlo calculations, electron accelerator||Issue Date||May-2018||Publisher||The Egyptian Society of Nuclear Sciences and Applications (ESNSA) Indexed and abstracted in (emerging source citation index) Clarivate Analytics||Journal||The Arab Journal of Nuclear Sciences and Applications (ESNSA) Accepted||URI||http://research.asu.edu.eg/handle/123456789/167393|
Recommend this item
|بحث الطيب بعد وضعه في فورمات المجلة العربية التعديل الاخير2018.doc||131 kB||Microsoft Word||View/Open Request a copy|
Items in Ain Shams Scholar are protected by copyright, with all rights reserved, unless otherwise indicated.