“…For this purpose, PM-355 sample irradiated with α-particles was selected. N and M values of the PM-355 nuclear track detector film used in present work are compared with materials known to have proven to be a sensitive nuclear track detector by having a good carbon atoms per conjugation length value such as (N=5.4, M=106) [22], (M=80 ) [23], (N=4, M=67) [24], (N=~5 ) [25], present work (N=~5, M=90.77), All the values for the PM-355 nuclear track detector above are measured before etching time except present work has been done under etching time. It is noticed that the PM-355 nuclear track detector film has a carbon atoms per conjugation length (N) and the number of the carbon atom per clusters (M) values large than these detectors, which means that our technique have a better SSNT detectors properties compared to these materials.…”