Results 21 to 30 of about 943,309 (288)

The Unit of Neutron Flux [PDF]

open access: yesNature, 1961
A unit of neutron flux, the chad, is defined as follows: 1 chad = 10/sup 1//sup 2/ n/cm/sup 2/ sec. The flux in most existing or contemplated power reactors lies in the range of lO/sup 1//sup 2/ to lO/sup 1//sup 3/ n/cm/sup 2/ sec, the flux in zero energy reactors is generally about 10/sup 9/ n/cm/sup 2/ sec, and that encountered in subcritical ...
I. S. McGILL, D. C. MENZIES, M. R. PRICE
openaire   +1 more source

Simulation of neutron radiation effects in silicon avalanche photodiodes [PDF]

open access: yes, 2000
This thesis was submitted for the degree of Doctor of Philosophy and awarded by Brunel University.A new one-dimensional device simulation package developed for the simulation of neutron radiatiol!
Osborne, Mark David
core   +7 more sources

Evaluating the dependency of neutron spectra and absorbed dose rates on the collimation field size in fast neutron therapy

open access: yesHeliyon, 2021
The aim of this research was to investigate the relationship between the collimator aperture and fast-neutron flux, neutron-energy spectrum and absorbed dose rate.
A.M. Shehada   +2 more
doaj   +1 more source

Calculation of Thermal Neutron Diffusion Length in a Light Water Media using MCNP Code [PDF]

open access: yesمجله علوم و فنون هسته‌ای, 2023
One of the key parameters of neutron diffusing media is the thermal neutron diffusion length. The popular calculational method is founded on utilizing MCNP code and curve fitting of a mathematical function to the neutron flux distribution in the media ...
M. Arkani
doaj   +1 more source

A Detection Method of Atmospheric Neutron Profile for Single Event Effects Analysis of Civil Aircraft Design

open access: yesAtmosphere, 2022
High-energy particles such as neutron act as serious threats to electronic equipment on board aircraft via Single Event Effects (SEE), but atmospheric neutron flux profile which could cover civil aviation altitude is rarely observed.
Yang Song, Xiangzheng Tu, Zhengqiang Li
doaj   +1 more source

Impact of physical model error on state estimation for neutronics applications* [PDF]

open access: yesESAIM: Proceedings and Surveys, 2023
In this paper, we consider the inverse problem of state estimation of nuclear power fields in a power plant from a limited number of observations of the neutron flux. For this, we use the Parametrized Background Data Weak approach.
Taumhas Yonah Conjungo   +4 more
doaj   +1 more source

Neutron activation analysis of plantinum converter and furnace mattes using a D-T sealed tube neutron generator [PDF]

open access: yes, 2013
Neutron activation analysis (NAA) has been applied to furnace matte and converter matte samples with the objective of studying the natural variation in the elemental composition of the samples, with a view to characterize the samples for their source of ...
Majawa, Louis John
core   +1 more source

Optimization and analysis of neutron distribution on 30 MeV cyclotron-based double layer beam shaping assembly (DLBSA)

open access: yesЯдерна фізика та енергетика, 2019
Design and optimization of double layer Beam Shaping Assembly (DLBSA) has been conducted using the MCNPX code. The BSA is configured to comply with such a construction having typically a double moderator, a reflector, a collimator, and a filter.
Bilalodin   +5 more
doaj   +1 more source

Upsampling Monte Carlo neutron transport simulation tallies using a convolutional neural network

open access: yesEnergy and AI, 2023
The physical quantities calculated by nuclear reactor Monte Carlo simulations are typically recorded on a grid of two or three spatial dimensions and one dimension of neutron energy. Because of this, increasing the resolution of the calculated quantities
Andrew Osborne   +2 more
doaj   +1 more source

The effect of craters on the lunar neutron flux [PDF]

open access: yesJournal of Geophysical Research: Planets, 2015
AbstractThe variation of remotely sensed neutron count rates is measured as a function of cratercentric distance using data from the Lunar Prospector Neutron Spectrometer. The count rate, stacked over many craters, peaks over the crater center, has a minimum near the crater rim, and at larger distances, it increases to a mean value that is up to 1 ...
Eke, V. R.   +10 more
openaire   +4 more sources

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