75 Se (T 1/2 = 120 d), 73g Se (T 1/2 = 7.1 h) and 72 Se (T 1/2 = 8.4 d) are important radioisotopes of selenium, being used in tracer studies, PET investigations and as a generator parent, respectively. Cross section data for the formation of those radionuclides in proton and deuteron induced reactions on 75 As were critically analyzed up to about 70 MeV. A well-developed evaluation methodology was applied to generate the statistically fitted cross sections, based on the critically analyzed literature experimental data and the theoretical cross section values of three nuclear model codes ALICE-IPPE, TAYLS 1.9, and EMPIRE 3.2. Using the fitted cross sections the integral yield of each radionuclide was calculated. For the estimation of impurities, the integral yield of each radionuclide was compared with the yields of the other two radionuclides over a given energy region, and therefrom the energy range was suggested for the high purity production of each of the radionuclides 75 Se, 73 Se and 72 Se. For production of the very important non-standard positron emitter 73 Se via the 75 As(p,3n) 73 Se reaction, the optimum energy range was deduced to be E p = 40 → 30 MeV, with a thick target yield of 1441 MBq/μAh and the 72,75 Se impurity level of <0.1%.

中文翻译：

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评价 75As 质子和氘核引发反应的核反应截面数据，特别强调 73Se 的产生

75 Se (T 1/2 = 120 d)、73g Se (T 1/2 = 7.1 h) 和 72 Se (T 1/2 = 8.4 d) 是硒的重要放射性同位素，用于示踪研究、PET 研究和分别作为生成器的父级。在高达约 70 MeV 的 75 As 上的质子和氘核诱导反应中形成这些放射性核素的横截面数据进行了严格分析。基于批判性分析的文献实验数据和三个核模型代码 ALICE-IPPE、TAYLS 1.9 和 EMPIRE 3.2 的理论横截面值，采用成熟的评估方法来生成统计拟合的横截面。使用拟合的横截面计算每种放射性核素的积分产额。对于杂质的估计，将每种放射性核素的积分产率与给定能量区域内其他两种放射性核素的产率进行比较，从中建议能量范围用于放射性核素 75 Se、73 Se 和 72 Se 中的每一种的高纯度生产。对于通过 75 As(p,3n) 73 Se 反应生产非常重要的非标准正电子发射体 73 Se，推导出最佳能量范围为 E p = 40 → 30 MeV，厚靶产率为 1441 MBq /μAh 和 <0.1% 的 72,75 Se 杂质水平。