Is. Kim et al., OBSERVATION OF THE TRAPPING OF RADIOACTIVE INERT-GAS RADON ON OXIDE GLASS SURFACES - MACROPOROUS SCINTILLATING-GLASS-FIBER BUNDLE ALPHA-DETECTOR, Nuclear instruments & methods in physics research. Section A, Accelerators, spectrometers, detectors and associated equipment, 390(3), 1997, pp. 419-422
We report the observation of the trapping of radioactive inert gas rad
on (Rn-222) on oxide glass under ambient air temperature and pressure
of 300 K and 760 Torr, respectively. Radon diffuses from the source, t
hrough two macroporous scintillating-glass-fiber bundle alpha detector
s in series, to the end of the linear closed system filled with ambien
t air. The strategy is to provide radon atoms and alphas emitted from
radon and its progeny with large accessible scintillating glass surfac
e areas for efficient trapping and detection, respectively. Diffusion-
only transport mechanism could not explain the experimental observatio
ns, strongly suggesting the trapping of radioactive inert gas radon (R
n-222) on oxide glass.