New After-Glow Color Images from Some Rock Slices Irradiated with .GAMMA.-Rays

Autor:	Motoshi Kojima, Shuei Sakaue, Tetsuo Hashimoto, Tadashi Sakai
Rok vydání:	1991
Předmět:	Radiation Optics Materials science business.industry Color image Color changes Gamma ray Irradiation Solid material business Phosphorescence Luminescence Dose rate
Zdroj:	RADIOISOTOPES. 40:219-225
ISSN:	1884-4111 0033-8303
Popis:	A new observation method of colored luminescence or after-glow (phosphorescence), emitted from rock slices immediately after γ-ray irradiation, has been developed using a normal color-film. The film was directly faced to the irradiated slices for a relatively short period like 2-5 min in a black bag. According to this simple procedure, the resultant photographs showed unexpectedly colorful images depending on the mineral constituents in slices. The intensities of the after-glow color images (referred to as AGCI) were found to be dependent on the dose rates rather than total doses. In the AGCI, the apparent variations of emission intensity were observed even within individual minerals as well as color changes affected by thermal metamorphism. A qualitative decay behavior has been clearly seen in the successive AGCI results. The proposed conventional AGCI technique is considered to become a promising tool applicable to varieties of mineralogical investigations as well as the additional information concerning the intrinsic physical properties of other solid materials.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::592e24d8bde67f1ce9c47c914b0fb6cc https://doi.org/10.3769/radioisotopes.40.6_219 Zobrazit plný text záznamu