Theoretical and computational methods for simulating the creation of ionization tracks by fast ions in solids were applied to the passage of α-particles in CsI, an inorganic scintillator commonly used for radiation detection. The methods were implemented in a Monte Carlo program to simulate the interaction of α-particles, with incident energies of up to 1 MeV, with CsI. The simulations followed the fate of individual electron-hole pairs and included the formation of Frenkel pairs and thus allowed for a detailed description of the microscopic structure of ionization and defect tracks created by incident radiation. Simulations were also performed with γ-rays of the same energy to compare and contrast the ionization tracks obtained with both types of particles. Intrinsic properties such as the mean energy per electron-hole pair, Fano factor, maximum theoretical light yield, and spatial distributions of electron-hole pairs were computed for both α-particles and γ-rays. α-Particles created cylindrical tracks that were initially aligned with the incident direction and with initial radii of a few tens of nanometers, whereas γ-rays showed significant scattering, resulting in probability distributions with lower intensities and much greater radial extents.

用于模拟固体中快速离子产生电离轨迹的理论和计算方法被应用于CsI中的α粒子通过，CsI是一种常用于辐射检测的无机闪烁体。该方法在Monte Carlo程序中实现，以模拟入射能量高达1 MeV的α粒子与CsI的相互作用。模拟遵循单个电子-空穴对的命运，包括弗伦克尔对的形成，因此可以详细描述电离的微观结构和入射辐射产生的缺陷轨迹。还使用相同能量的γ射线进行了模拟，以比较和对比两种类型的粒子获得的电离轨迹。本征特性，例如每个电子-空穴对的平均能量，Fano因子，计算了最大理论光产量，并计算了α粒子和γ射线的电子-空穴对的空间分布。α粒子创建了最初与入射方向对齐且初始半径为几十纳米的圆柱轨迹，而γ射线显示出显着的散射，从而导致概率分布具有较低的强度和更大的径向范围。