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首页> 外文期刊>The journal of physical chemistry, A. Molecules, spectroscopy, kinetics, environment, & general theory >Influence of Superfluidity on Recombination Reactions of H + T → HT and T + T → T_2 in ~3He-~4He Quantum Media under Saturated Vapor Pressure at 1.6 K
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Influence of Superfluidity on Recombination Reactions of H + T → HT and T + T → T_2 in ~3He-~4He Quantum Media under Saturated Vapor Pressure at 1.6 K

机译：超流体对在1.6 K饱和蒸气压下〜3He-〜4He量子介质中H + T→HT和T + T→T_2的复合反应的影响

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摘要

An influence of superfluidity on chemical reaction has been studied in the recombination reactions of hydrogen (H) and tritium (T) atoms, H + T → HT and T + T → T_2, in ~3He-~4He mixture solutions at 1.6 K. The reactive species, H and T atoms, were produced in the mixture through the nuclear reaction, ~3He + n → p(H) + T. Experimental yield ratio of HT to T_2 was 110 ± 17 in normal-fluid solution. However, in superfluid solution, the value decreased to 60 with a decrease in atomic fraction of ~3He. A two-fluid model was applied to estimate the contribution of superfluidity. The calculated yield of HT to T_2 in the superfluid component became almost a constant value of 56 ± 14 over the whole range of superfluid solution studied. On the basis of preferential formation of HT over T_2 and a computer simulation of relative rate constants, formation of hydrogen isotope bubbles and their tunneling recombination were proposed.
机译：在1.6 K的〜3He-〜4He混合溶液中，氢（H）和tri（T）原子（H + T→HT和T + T→T_2）的重组反应中研究了超流体对化学反应的影响。通过核反应在混合物中生成了反应性物种H和T原子〜3He + n→p（H）+T。在正常流体溶液中，HT与T_2的实验产率为110±17。但是，在超流体溶液中，原子分数降低约3He，该值降至60。应用了两种流体模型来估计超流体的贡献。在所研究的超流体溶液的整个范围内，超流体组分中HT对T_2的计算产率几乎变为恒定值56±14。在HT优先于T_2形成和相对速率常数的计算机模拟的基础上，提出了氢同位素气泡的形成及其隧穿复合。

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