Analyze the positive ion detector in terms of thickness

Nanodosimetry is a technique that measures the energy deposited by ionizing radiation in low pressure gas volume which correlates the number of ionization produced in nanometric scale of the DNA. In the modern field of nanodosimetry, the structure of the PCB technology based positive ion detector play a more prominent role to improve its efficiency. Hence, the present study analyzes the variation in efficiency of the PCB technology based detector in terms of its thickness. In our study, the copper strips, cathode material and insulating material of the PCB technology based detector proposed by Bashkirov et al., were modified and it is used for further analysis. The detector 1 was constructed to have 3.220 mm thickness which includes 3.0 mm dielectric materials and 0.220 mm gold. The detector 2 was constructed to have 3.483 mm thickness which includes 3.261 mm dielectric materials and 0.222 mm gold. These two detectors were characterized by Nanodosimeter under Propane and argon medium at 0 to 10 Torr pressure using Am-241 and Co-60 sources. It is concluded that as the thickness of the PCB technology based positive ion detector increases, the ion collection efficiency is also increased. This is due to the increase in dielectric materials thickness which enhances the ion impact ionization.