書誌事項
- タイトル別名
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- Determination of Neutron Fluxes at the Self-shielded PET Cyclotron and the Electron Liniac Apparatus of Tokushima University Hospital Using Activation Foil Method
- イリョウヨウ ジコ シャヘイガタ PET サイクロトロン オヨビ デンシ リニアック ニ オケル チュウセイシソク ノ ハク ホウシャカホウ ニ ヨル ソクテイ
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Up till now, from a radiation safety management point of view, it has been discussed to construct guidelines on estimation of neutron fluxes produced via operating various medical small accelerators and to establish uniformly the clearance system related to having neutron activation effects into each accelerator facility.That is, it was the aim of this investigation to accumulate the data on estimation basis of neutron flux measurements at those medical small accelerators by an activation foil method.In this work, the neutron fluxes at the self-shielded PET cyclotron and the electron liniac apparatus of Tokushima University Hospital have been measured as the medical small accelerator.As a result, for the self-shielded PET cyclotron, it was found that the thermal neutron flux is (1.04±0.05) x107 cm-2s-1 and the fast neutron fluxes are distributed over the range 1x104 (the neutron energy En=9MeV) to 1x107 (En=1.5 MeV) cm-2s-1 into the radiation shelter, and while the thermal neutron fluxes would be distributed over the range 5.0x101 to 9.9x101 cm-2s-1 and then the fast neutron dose leakages were not detected outside there. For the 6/10 MV electron liniac apparatus, it was also found that nearly the same thermal neutron fluxes would be distributed all around the liniac room and those measured values are over the range (1.01±0.18) x103 to (1.32±0.10) x103cm-2s-1.
収録刊行物
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- 日本放射線安全管理学会誌
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日本放射線安全管理学会誌 7 (2), 138-147, 2008
JAPANESE SOCIETY OF RADIATION SAFETY MANAGEMENT
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詳細情報 詳細情報について
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- CRID
- 1390282680373971712
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- NII論文ID
- 130004175560
- 40016387353
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- NII書誌ID
- AA11693866
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- ISSN
- 18849512
- 13471503
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- NDL書誌ID
- 9744413
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- 本文言語コード
- ja
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- データソース種別
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- JaLC
- NDL
- CiNii Articles
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- 抄録ライセンスフラグ
- 使用不可