The colouration of CaF 2 crystals by keV AND GeV ions

Autor:	J. D. Comins, A. G. Kozakiewicz, A.T. Davidson, Trevor E. Derry, Christina Trautmann, K. Schwartz
Rok vydání:	2002
Předmět:	Nuclear and High Energy Physics Radiation Chemistry Metal ions in aqueous solution Analytical chemistry Electron Condensed Matter Physics Ion Colloid Ion implantation Absorption band General Materials Science Absorption (chemistry) Atomic physics Magnesium ion
Zdroj:	Radiation Effects and Defects in Solids. 157:637-641
ISSN:	1029-4953 1042-0150
DOI:	10.1080/10420150215811
Popis:	CaF 2 crystals have been implanted with a variety of ions of widely different energies and mass. Effects have been monitored using optical absorption in the range 120-750 v nm. This includes the vacuum UV region. For 100 v keV ions (Al, Mg, Kr) we observe extrinsic colloid bands in the case of implanted metal ions at high fluences (10 17 v ions v cm 2 ) but no colour centres (F, F 2 etc). For GeV ions (U, Ni) we observe prominent absorption bands in the visible region at fluences of 10 12 v ions v cm m 2 attributed to extrinsic calcium colloids. New optical features are discussed including an absorption band near 185 v nm in the VUV and bands at 604 v nm and 672 v nm in the visible region.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::1fc21db2021b634a7f655a978f871d95 https://doi.org/10.1080/10420150215811 Zobrazit plný text záznamu Plný text ve formátu PDF