This work is a further development of our method, published in 2018, for computer analysis of micrographs taken from a plastic detector CR-39, etched after irradiation with a beam of ¹²C ions of energy 216 MeV/amu in the radiobiological research chamber of the ITEP-TWAC accelerator-storage complex. The aim of this work is to study geometric and optical parameters of pits in the etched plastic. This study is based on a new concept of reduced radii, which are the radii of the cross-section of inclined conical micro- and nano-pits at the points of intersection of their longitudinal axes and the etching surface of the detector; formulas for their calculations are derived. One CR-39 plate was irradiated in a radiobiological chamber filled with air, and eight plates were exposed at different depths of the chamber filled with water (phantom). 275,070 images of etched pores were found and analyzed in the plates. Differential frequency distributions of the reduced radii and depths of the pits and their average values on the etched surfaces of the plates are obtained. Formulas for nanodensitometry, microdensitometry, and macrodensitometry of pit images on micrographs are deduced. The dependences of the differential distributions and averaged values of pits optical densities on the ions passed ranges in the water phantom are calculated. Pairwise fittings by linear functions of the mutual dependences of the averaged values from each other and from the specific energy losses of ions are performed. It is shown that the most accurate linear fit is for the optical density-pit depth relationship.

这项工作是我们方法的进一步发展，该方法于2018年发布，用于对从塑料探测器CR-39拍摄的显微照片进行计算机分析，该探测器在用¹²束光束照射后被蚀刻ITEP-TWAC加速器-存储复合体的放射生物学研究室中的能量离子为216 MeV / amu。这项工作的目的是研究蚀刻塑料中凹坑的几何和光学参数。这项研究基于减小半径的新概念，即倾斜锥形微坑和纳米坑在其纵轴与检测器蚀刻表面相交点处的横截面半径；推导了它们的计算公式。在充满空气的放射生物学室中照射一块CR-39板，在充满水的室的不同深度处暴露八块板（幻影）。在板上发现并分析了275,070张蚀刻孔的图像。获得减小的半径和凹坑深度的差分频率分布及其在板的蚀刻表面上的平均值。推导了显微照片上凹坑图像的纳米光密度法，微光密度法和宏观光密度法的公式。计算出微分分布和凹坑光密度平均值对水模中离子通过范围的依赖性。通过线性函数对平均值和离子的特定能量损失之间的相互依赖性进行成对拟合。结果表明，最精确的线性拟合是针对光密度-凹坑深度的关系。计算出微分分布和凹坑光密度平均值对水模中离子通过范围的依赖性。通过线性函数对平均值和离子的特定能量损失之间的相互依赖性进行成对拟合。结果表明，最精确的线性拟合是针对光密度-凹坑深度的关系。计算出微分分布和凹坑光密度平均值与水模中离子通过范围的关系。通过线性函数对平均值和离子的特定能量损失之间的相互依赖性进行成对拟合。结果表明，最精确的线性拟合是针对光密度-凹坑深度的关系。