title: Track studies in water vapor using a low-pressure cloud chamber. II. Microdosimetric measurements.
abstract: A low-pressure cloud chamber has been adapted to operate with pure water vapor. Photographs were obtained of tracks arising from the passage of ionizing radiation. The sources used were low-energy X rays, 242Cm alpha particles, and low-energy protons. Distributions of lineal energy, radial distances around an ion track, and interdroplet distances were measured and compared with the predictions of Monte Carlo calculations. After allowing for diffusion and the limitations of the geometry of the system, the measured and calculated distributions were found to be in good agreement.
authors.affiliation: A.E.A. Technology, Harwell Laboratory, Didcot, Oxon, United Kingdom.
authors.forename: G P
authors.initials: GP
authors.lastname: Stonell
authors.forename: M
authors.initials: M
authors.lastname: Marshall
authors.forename: J A
authors.initials: JA
authors.lastname: Simmons
mesh_terms: D000512:Alpha Particles; D004583:Electrons; D009010:Monte Carlo Method; D011522:Protons; D011874:Radiometry / Q000295:instrumentation / Q000379:methods*; D014835:Volatilization; D014867:Water; D014965:X-Rays
chemical_list: D011522:Protons; D014867:Water