ARC Centre of Excellence for Antimatter-Matter Studies, Flinders University, GPO Box 2100, Adelaide, South Australia 5001, Australia.
J Chem Phys. 2012 Jun 28;136(24):244301. doi: 10.1063/1.4729466.
Cross section data for electron scattering from DNA are important for modelling radiation damage in biological systems. Triply differential cross sections for the electron impact ionization of the highest occupied outer valence orbital of tetrahydrofurfuryl alcohol, which can be considered as an analogue to the deoxyribose backbone molecule in DNA, have been measured using the (e,2e) technique. The measurements have been performed with coplanar asymmetric kinematics at an incident electron energy of 250 eV, an ejected electron energy of 20 eV, and at scattered electron angles of -5°, -10°, and -15°. Experimental results are compared with corresponding theoretical calculations performed using the molecular 3-body distorted wave model. Some important differences are observed between the experiment and calculations.
电子与 DNA 散射的截面数据对于生物系统中辐射损伤的建模非常重要。使用（e，2e）技术测量了可被视为 DNA 脱氧核糖骨架分子类似物的四氢糠醇的最高占据外层价轨道的电子碰撞离化的三重微分截面。在入射电子能量为 250 eV、出射电子能量为 20 eV 以及散射电子角度为-5°、-10°和-15°的情况下，采用共面非对称运动学进行了测量。实验结果与使用分子三体散射波模型进行的相应理论计算进行了比较。实验和计算之间观察到了一些重要的差异。
