Photostimulated detection of defect formation in BaF2 under irradiation of synchrotron radiation

Autor:	Toru Tsujibayashi, Shuji Asaka, Junpei Azuma, Hiroshi Itoh, Osamu Arimoto, Masayuki Watanabe, Masao Kamada, Shunsuke Nakanishi
Rok vydání:	2012
Předmět:	Photoexcitation Chemistry Physics::Optics Synchrotron radiation Electron Irradiation Radiation Atomic physics Photon energy Condensed Matter Physics Luminescence Spectroscopy Electronic Optical and Magnetic Materials
Zdroj:	physica status solidi (b). 250:396-401
ISSN:	0370-1972
DOI:	10.1002/pssb.201248301
Popis:	We have investigated the defect formation processes of BaF2 single crystals under vacuum ultraviolet radiation with the use of combination spectroscopy of synchrotron radiation (SR) and laser. The defect formation efficiency was measured as a function of excitation photon energy of SR by means of a laser-induced luminescence method. It was found that the efficiency depends significantly on the excitation photon energy. We show that the dependence can be explained in terms of the diffusive motion of hot conduction electrons generated by the photoexcitation. The relationship between the defect formation and the energy relaxation of core excitons is also discussed.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::ef5514ac42a4bcabc71ef9cc854f8c79 https://doi.org/10.1002/pssb.201248301 Zobrazit plný text záznamu Plný text