p<SUP>11</SUP>B核融合反応プラズマからの中性子発生
スポンサーリンク
概要
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It is presented to estimate yields of neutron and radioactive nucleus (<SUP>7</SUP>Be, <SUP>12</SUP>B, <SUP>10</SUP>C, <SUP>11</SUP>C, <SUP>14</SUP>C, <SUP>13</SUP>N) per one p<SUP>11</SUP>B fusion reaction by the following 15 reactions : <SUP>11</SUP>B (p, n) <SUP>11</SUP>C, <SUP>11</SUP>B (α, n) <SUP>14</SUP>N, <SUP>11</SUP>B (α, p) <SUP>14</SUP>C, (α, n) of the structure material (SUS316) bombarded by α-particles, (γ, n) of the same and <SUP>11</SUP>B (γ, n) <SUP>10</SUP>B by 16MeV γ -ray of <SUP>11</SUP>B (p, γ) <SUP>12</SUP>C, <SUP>10</SUP>B (p, n) <SUP>10</SUP>C, <SUP>10</SUP>B (α, n) <SUP>13</SUP>N, <SUP>10</SUP>B (p, γ) nc, <SUP>10</SUP>B (p, α) <SUP>7</SUP>Be, <SUP>11</SUP>B (d, n) <SUP>12</SUP>C, <SUP>11</SUP>B (d, 2n) <SUP>11</SUP>C, <SUP>11</SUP>B (d, p) <SUP>12</SUP>B, <SUP>10</SUP>B (d, n) <SUP>11</SUP> 10B (d, n) C and D (d, n) <SUP>3</SUP>He, in the p<SUP>11</SUP>B fusion plasma with impurities of <SUP>10</SUP>B and D. Result shows that the neutron yields by the other 7 reactions than<SUP>11</SUP>B (p, n) <SUP>11</SUP>C, <SUP>11</SUP>B (α, n) <SUP>14</SUP>N, SUS316 (γ, n) and <SUP>11</SUP>B (d, n) <SUP>12</SUP>C can be neglected (< 10<SUP>-7</SUP>). Neutron yield and averaged energy by the above 4 main reactions are 2.27×10<SUP>-3</SUP> and 2.49 MeV, and, 9.62×10<SUP>-5</SUP> and 3.93 MeV from the plasma of T<SUB>i</SUB>=300keV and T<SUB>i</SUB>/T<SUB>e</SUB>=1, and T<SUB>i</SUB>/T<SUB>e</SUB>=200, respectively.