KUR Heavy Water Facility for Thermal Neutron Experiment
(Research Reactor Institute, Kyoto University)
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| Absorved dose by thermal neutron capture reactions | ||||||||||
| Thermal neutron fluence = 2.31E+09 n/cm2/sec | ||||||||||
| Elemental composition of ICRU (1980) soft tissue substitute (H=0.101, N=0.026, O=0.762) | ||||||||||
| Boron-10 (10B): Boron concentration=20ƒÊg/ml: Purity of 10B=96.35 %. | ||||||||||
| Water content in target volume: 70 % | ||||||||||
| Determination of gamma-ray dose: TLD dosimeter either in the empty sapmle tube (external gamma) or in the | ||||||||||
| sample tube filled with blood sample (total external+capture gamma dose) | ||||||||||
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| Reaction | Cross section | Particle energy | Absorbed dose | |||||||
| (barn) | (MeV) | (cGy) | 10B (-) | 10B (+) | ||||||
| 1H(n,ƒÁ)2D | ƒÐ=0.332 | ƒÁ | 2.229 | 4.50960E-02 | 48.429 | (%) | 12.352 | (%) | ||
| 2D | 0.0013 | 9.71620E-04 | 1.043 | (%) | 0.266 | (%) | ||||
| 14N(n,p)14C | ƒÐ=1.81 | p | 0.586 | 4.37520E-02 | 46.986 | (%) | 11.984 | (%) | ||
| 14C | 0.042 | 3.13580E-03 | 3.368 | (%) | 0.859 | (%) | ||||
| 17O(n,ƒ¿)14C | ƒÐ=0.24 | ƒ¿ | 1.42 | 1.26000E-04 | 0.135 | (%) | 0.035 | (%) | ||
| 14C | 0.4 | 3.54930E-05 | 0.038 | (%) | 0.010 | (%) | ||||
| 10B(n,ƒ¿,ƒÁ)7Li (93.7%) | ƒÐ=3837 | ƒ¿ | 1.474 | 1.59360E-01 | 0 | (%) | 43.648 | (%) | ||
| 7Li | 0.841 | 9.09220E-02 | 0 | (%) | 24.904 | (%) | ||||
| ƒÁ | 0.478 | 1.39880E-03 | 0 | (%) | 0.383 | (%) | ||||
| 10B(n,ƒ¿)7Li (6.3%) | ƒÐ=3837 | ƒ¿ | 1.778 | 1.29240E-02 | 0 | (%) | 3.540 | (%) | ||
| 7Li | 1.015 | 7.37800E-03 | 0 | (%) | 2.021 | (%) | ||||
| Total | 100 | (%) | 100 | (%) | ||||||
| 10B(+): Presence of 10B; 10B(-): Absence of 10B | . | |||||||||
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