Radiolysis of aqueous solutions with pulsed helium ion beams Yield of (SCN)2-formed by scavenging OH as a function of SCN-concentration
Radiolysis of aqueous solutions with pulsed helium ion beams Yield of (SCN)2-formed by scavenging OH as a function of SCN-concentration
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用脉冲氦离子束辐射分解水溶液 通过清除 OH 形成的 (SCN)2- 的产率与 SCN 浓度的函数关系
DOI：
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发表时间：
1997
期刊：
影响因子：
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通讯作者：
T. Murakami
中科院分区：
文献类型：
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作者：
N. Chitose;Y. Katsumura;Z. Zuo;Masafumi Domae;K. Ishigure;T. Murakami
测定了G[(SCN)2-]在脉冲24mev He2+离子辐射溶解KSCN水溶液中的浓度依赖性。在0.1 mol dm-3以下，He2+的产率随浓度的增加而增加，在测量的浓度范围内，21 MeV He2+的产率小于电子束。结果已与报道的来自不同清除剂的GOH进行了比较。数据不符合高清除能力。结果表明，产物产率不等于GOH，因为部分产物在高清除能力的轨道内反应中消失，特别是在高线性能量转移（LET）辐射分解中。通过确定性扩散动力学计算定性地证实了这一点。
The concentration dependence of G[(SCN)2-] in the radiolysis of aqueous KSCN solutions with pulsed 24 MeV He2+ ions has been measured. The yield increased with increasing concentration below 0.1 mol dm-3, and in the measured concentration range the yield for 21 MeV He2+ was smaller than for an electron beam. The results have been compared with the reported GOH derived from various scavengers. The data did not agree at high scavenging capacity. It was suggested that the product yields do not equal GOH because part of the products disappear by intra-track reactions at high scavenging capacity particularly in high linear energy transfer (LET) radiolysis. It was confirmed qualitatively by the deterministic diffusion kinetic calculations.