No CrossRef data available.
The action of β and γ rays on rock salt crystals
Published online by Cambridge University Press: 24 October 2008
Extract
1. Many insulating crystals, such as rock salt, after exposure to high energy radiation, e.g. X-rays, β-rays, ultra-violet light or γ rays, acquire, as a result of this treatment, two new properties: (i) a new absorption band, usually situated in the visible spectrum, well separated from the continuous absorption in the far ultra-violet, and, when intense, giving visible coloration to the crystal in ordinary light; (ii) the power of showing what has been termed the inner photo-electric effect, i.e. when subjected to an electric field and then illuminated with light in the region of the new absorption band, the “activated” crystal gives an instantaneous response in the form of a small electronic conduction; in the dark or for light outside this band it is still non-conducting (Fig. 1).
- Type
- Research Article
- Information
- Mathematical Proceedings of the Cambridge Philosophical Society , Volume 30 , Issue 1 , January 1934 , pp. 62 - 69
- Copyright
- Copyright © Cambridge Philosophical Society 1934
References
* Hilsch, and Pohl, , Zeit. f. Phys. 64, 606 (1930)CrossRefGoogle Scholar; Hughes and Du Bridge, Photo-electric Phenomena; Nix, Reviews of Mod. Phys. Oct. 1932; Pohl, , Naturw. 21, 264 (1933).CrossRefGoogle Scholar
† Gyulai, , Zeit. f. Phys. 33, 251 (1925).CrossRefGoogle Scholar
* Joffé, , Physics of Crystals (McGraw, Hill; 1928).Google Scholar
† Burbidge, , Nature, 132, p. 677 (1933).CrossRefGoogle Scholar
‡ Ussataja, and Hochberg, , Zeit. f. Phys. 46, 88 (1927).CrossRefGoogle Scholar
§ Tartakowsky, , Zeit. f. Phys. 60, 830 (1930)CrossRefGoogle Scholar; Kalabuchow, and Fischelew, , Zeit. f. Phys. 75, 282 (1933).CrossRefGoogle Scholar
* A guard ring electrode was initially used but found unnecessary; the insulation of the sides, scraped clean, was very high at the temperatures used.
* Flechsig, , Zeit.f.Phys. 46, 788 (1927)CrossRefGoogle Scholar; Kalabuchow, , Zeit.f.Phys. 80, 534 (1933).CrossRefGoogle Scholar
† Joffé, loc. cit.
‡ Seeliger, Graetz'sHdbh. d. Elektr. iii, 397Google Scholar; Flechsig, loc. cit.
§ Gudden, and Pohl, , Zeit. f. Phys. 31, 651 (1925).CrossRefGoogle Scholar
* Smakula, , Zeit. f. Phys. 63, 762 (1930)CrossRefGoogle Scholar; Hilsch and Pohl, loc. cit.; Smekal, , Ber. Int. Kong. Phot. Dresden (1931).Google Scholar
† Kronig, and Penney, , Proc. Roy. Soc. 130, 499 (1931)CrossRefGoogle Scholar; Wilson, A. H., Nature, 130, 913 (1932)CrossRefGoogle Scholar; Gurney, , Proc. Roy. Soc. 141, 209 (1933).CrossRefGoogle Scholar
* Hilsch and Pohl, loc. cit. p. 620.
† Mollivo, , Gött. Nachr. p. 97, 1931Google Scholar; Fröhlich, , Zeit. f. Phys. 80, 819 (1932).CrossRefGoogle Scholar