The nature of the photosensitivity of Geiger counters

✍ Scribed by H.O. Albrecht; C.E. Mandeville

• Publisher: Elsevier Science
• Year: 1958
• Tongue: English
• Weight: 466 KB
• Volume: 265
• Category: Article
• ISSN: 0016-0032
• DOI: 10.1016/0016-0032(58)90390-9

✦ Synopsis

Some aspects of the photosensitivity of the Gelger counter are discussed. Methods for increasing response to ultraviolet and near ultraviolet photons are described. The photosensitivity is traced to formation of a surface film upon the inner wall of the cathode ; that is, a quasi-metalllc alkyl coating is assumed to be formed. Relatively short wave radiation of sufficient energy to form free radicals in hydrogen and organic quenching gases is required to increase ("activate") the sensitivity.