Ionization of Fluorocarbon Gases by U234 Alpha-Particles

Ionization defect for alpha particles in various gases

The ionization produced by the Li7* and o<-particles from the reaction BlO(njo<)Li7* as they were stopped in argonj argon-nitrogen~ and argoncarbon dioxide gas mixtures was measured. A gridded parallel-plate ionization chamber employing electron collection was used. Plutonium alpha particles were used for calibration and the ionization electron pulses were amplified and sorted-with an electroni...

Bayesian Analysis of Alpha-Particles and Protons Nanodosimetric Ionization Distributions

Radiobiological data suggest that track quality depends on the statistical properties of ionization events in a biologically significant site of nanometric size. Such statistical properties can be studied experimentally with a track-nanodosimetric counter based on single electron detection mounted on a beam line of the Tandem-Alpi INFN Legnaro National Laboratories particle accelerator complex ...

Ionization of liquid argon by a particles

From an analysis of electron pulses in liquid argon produced by a particles the average energy required to form an ion pair is evaluated, assurmng JaEk’s theory of columnar recombination is valid. The mean value of 26.0 ev found in this way agrees well with the corresponding value of 26.4 ev for a particles m argon gas. Application of Jaffk’s theory to the liquid state is discussed, and from th...

Exposure of school children to alpha particles

Background: A substantial part of the public’s natural radiation dose is due to the inhalation of radon gas. Most of the exposure occurs indoors where the airborne concentration of radon and its decay products is usually higher than outdoors. Materials and Methods: Radon activity concentration has been measured twice in 50 classrooms in 5 levels (10 each) during summer and winter using solid-st...

Multiple Ionization of Rare Gases by H+ and He+ Impact