KrCl barrier-discharge excilamps: Energy characteristics and applications (Review)

Abstract

The results of investigations of planar and coaxial barrier-discharge KrCl excilamps (λ ~ 222 nm) are reviewed. Brief information on the developed structures of radiators and power-supply units and the results of life tests are presented. The kinetics of the processes in the working gaseous medium, the possible methods for improving the energy parameters of KrCl excilamps, and prospects of their applications are reported.

Far-UVC light: A new tool to control the spread of airborne-mediated microbial diseases

“…We used a bank of three excimer lamps containing a Kr-Cl gas mixture that predominantly emits at 222 nm 25 , 26 . The exit window of each lamp was covered with a custom bandpass filter designed to remove all but the dominant emission wavelength as previously described 15 .…”

Far-UVC light: A new tool to control the spread of airborne-mediated microbial diseases

“…We used a bank of three excimer lamps containing a Kr-Cl gas mixture that predominantly emits at 222 nm 26,27 . The exit window of each lamp was covered with a custom bandpass filter designed to remove all but the dominant emission wavelength as previously described 15 .…”

Predicting airborne coronavirus inactivation by far-UVC in populated rooms using a high-fidelity coupled radiation-CFD model

“…Used for over a hundred years, UVGI-based disinfection traditionally relies on cancer-causing 254 nm UVC light thereby rendering it incompatible for use around people. Fortuitously, recent advances in UV lamp technology, in particular excimer lamps [6][7][8] and light-emitting diodes [9][10][11] , now permit narrow bandwidth, short wavelength UVC (207-222 nm) to be generated. As these far-UVC wavelengths cannot penetrate either the human stratum corneum or ocular tear layer 12 , they are not carcinogenic or cataractogenic [13][14][15][16][17] and can therefore be safely used in people-facing applications 18 .…”