title: Improved detection of ultraviolet radiation with gas-filled phototubes through photoionization of excited atoms.
abstract: Using dc biases higher than those recommended by manufacturers, it is possible to exploit photoionization of excited atoms to obtain high sensitivities to uv radiation using gas-filled phototubes. Spectral response, nonlinearity of response, and dc bias effects are discussed. Comparisons are made with uv semiconductor detectors, and suggestions for future research are made. If a photocathode is used in a gas tube such devices are quite sensitive to both visible and uv radiation.
authors.forename: N S
authors.initials: NS
authors.lastname: Kopeika
authors.forename: R
authors.initials: R
authors.lastname: Gellman
authors.forename: A P
authors.initials: AP
authors.lastname: Kushelevsky