Linear Energy Transfer of Alpha particles in different gaseous media using the Nuclear Track Detectors CR39

In this work, the interaction of alpha particles with nuclear track detectors (CR-39 detectors) was studied. The peak of Bragg was verified by the notice of the variation of the Alpha tracks diameters, according to the change in the detector-source distance, recorded by these detectors. The experiences show that the diameter of the track was related with the theoretical linear energy transfer which confirms the occurrence of the Bragg peak when Alpha particles interact with the detector. A vacuum chamber was fabricated to study the interaction of alpha particles with several types of gas, distances, and vacuum rate, and to verify the Bragg-Kliman rule for gases which have an atomic weight close to that for air. (author)