Rotermund Brian M, Mezyk Stephen P, Sperling Joseph M, Beck Nicholas B, Wineinger Hannah, Cook Andrew R, Albrecht-Schönzart Thomas E, Horne Gregory P
Department of Chemistry, Colorado School of Mines, Golden, Colorado 80401, United States.
Department of Chemistry and Biochemistry, Florida State University, Tallahassee, Florida 32306, United States.
J Phys Chem A. 2024 Jan 25;128(3):590-598. doi: 10.1021/acs.jpca.3c07404. Epub 2024 Jan 12.
Despite the availability of transuranic elements increasing in recent years, our understanding of their most basic and inherent radiation chemistry is limited and yet essential for the accurate interpretation of their physical and chemical properties. Here, we explore the transient interactions between trivalent californium ions () and select inorganic radicals arising from the radiolytic decomposition of common anions and functional group constituents, specifically the dichlorine (Cl) and sulfate (SO) radical anions. Chemical kinetics, as measured using integrated electron pulse radiolysis and transient absorption spectroscopy techniques, are presented for the reactions of these two oxidizing radicals with ions. The derived and ionic strength-corrected second-order rate coefficients () for these radiation-induced processes are ( + Cl) = (8.28 ± 0.61) × 10 M s and ( + SO) = (9.50 ± 0.43) × 10 M s under ambient temperature conditions (22 ± 1 °C).
尽管近年来超铀元素的可得性有所增加，但我们对其最基本和内在的辐射化学的理解仍然有限，然而这对于准确解释其物理和化学性质至关重要。在此，我们探索三价锎离子（）与由常见阴离子和官能团成分的辐射分解产生的选定无机自由基之间的瞬态相互作用，特别是二氯（Cl）和硫酸根（SO）自由基阴离子。本文介绍了使用积分电子脉冲辐解和瞬态吸收光谱技术测量的这两种氧化自由基与离子反应的化学动力学。在环境温度条件（22±1°C）下，这些辐射诱导过程的推导和离子强度校正的二级速率系数（）为（+ Cl）=（8.28±0.61）×10 M s和（+ SO）=（9.50±0.43）×10 M s。
