| Autor: |
Masashi Wakisaka, Junichi Kaneko, Fumiyuki Fujita, S. Yoshida, Teruko Sawamura, K. Ochiai, Takeo Nishitani |
| Rok vydání: |
2005 |
| Předmět: |
|
| Zdroj: |
Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment. 554:347-355 |
| ISSN: |
0168-9002 |
| DOI: |
10.1016/j.nima.2005.06.082 |
| Popis: |
The process of neutron leaking from a 14 MeV neutron source facility was analyzed by calculations and experiments. The experiments were performed at the Fusion Neutron Source (FNS) facility of the Japan Atomic Energy Institute, Tokai-mura, Japan, which has a port on the roof for skyshine experiments, and a 3He counter surrounded with a polyethylene moderator of different thicknesses was used to estimate the energy spectra and dose distributions. The 3He counter with a 3-cm-thick moderator was also used for dose measurements, and the doses evaluated by the counter counts and the calculated count-to-dose conversion factor agreed with the calculations to within ∼30%. The dose distribution was found to fit a simple analytical expression, D ( r ) = Q D exp ( - r / λ D ) r and the parameters Q D and λ D are discussed. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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Full Text from ScienceDirect