Title: Geometric and optical properties of pits in CR-39 plastic etched after irradiation by 216 MeV or amu 12C beam at different depths of water-chamber

Abstract

This work belongs to the direction of multilateral research of the system of the accelerated beam 12C plus the CR-39 plastic detector. The use of a highly sensitive plastic detector, on the one hand, makes it possible to study the properties of the ion beam, on the other hand, it makes it possible to investigate the results of the action of the beam on the plastic detector itself. Both results are very important for numerous physical studies medical applications, but in addition to these studies, the second result allows changing the properties of surfaces and the internal structure of materials by irradiation with ions, which can be important for the field of Materials Science. Beam of 216 MeV/amu 12C ions irradiated CR-39 plates in biochamber at the TWAC-ITEP accelerator. The plates were etched and dried. A system microscope-computer made about 50 scanned micrographs from each surface of eight plastic plates irradiated in different depths of biochamber filled by water (main experiment) and of one plate irradiated in the same biochamber but filled by air (auxiliary experiment).