Eskandari, Mohamad R. (1978). The Transfer Function for a Subcritical System Measured by Prompt Gamma Radiation. PHD thesis, Aston University.
Abstract
The source transfer function has been measured in a natural uranium-light water moderated sub-critical assembly as a function of source frequency and position. A square wave input of fast neutrons from the D-T reaction was supplied by a SAMES type J accelerator suitably modified for the purpose. Prompt gamma radiation from fission, energy above 2.5 Mev was detected with a sodium iodide scintillation counter and the time variation of the detector output was recorded on a multi-channel analyser used in the time sequence storage mode and synchronised with the source pulsing frequency. By Fourier analysing the recorded waveform the source transfer function was found. Two group diffusion theory was used to determine the spatially dependent source transfer function for a system similar to the experimental one. The computer programs ATEST and GAMMARESFU, were written to calculate the neutron flux in the core and also prompt fission gamma rays response function outside the subcritical assembly at chosen frequency and detector position. The method gave good agreement with the experiment.
| Divisions: | College of Engineering & Physical Sciences |
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| Additional Information: | Copyright © Eskandari, M. R, 1978. Eskandari, M. R asserts their moral right to be identified as the author of this thesis. This copy of the thesis has been supplied on condition that anyone who consults it is understood to recognise that its copyright rests with its author and that no quotation from the thesis and no information derived from it may be published without appropriate permission or acknowledgement. If you have discovered material in Aston Publications Explorer which is unlawful e.g. breaches copyright, (either yours or that of a third party) or any other law, including but not limited to those relating to patent, trademark, confidentiality, data protection, obscenity, defamation, libel, then please read our Takedown Policy and contact the service immediately. |
| Institution: | Aston University |
| Uncontrolled Keywords: | transfer function,subcritical system,gamma radiation |
| Last Modified: | 23 Jan 2025 09:36 |
| Date Deposited: | 13 Jan 2011 11:20 |
| Completed Date: | 1978 |
| Authors: |
Eskandari, Mohamad R.
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