Soft-X-ray emission insulators : spectator versus normal emission

We investigate the excitation energy dependence of the boron [ital K] soft-x-ray emission of B[sub 2]O[sub 3] and hexagonal-BN using synchrotron radiation. When exciting into the core exciton state the spectra are shifted to lower energy by 1.5 and 1.8 eV, respectively. This shift is found to be a r...

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Veröffentlicht in:	Physical review letters 1993-01, Vol.70 (2), p.238-241
Hauptverfasser:	O'BRIEN, W. L, JIA, J, DONG, Q.-Y, CALLCOTT, T. A, MIYANO, K. E, EDERER, D. L, MUELLER, D. R, KAO, C.-C
Format:	Artikel
Sprache:	eng
Schlagworte:	360204 > Ceramics, Cermets, & Refractories-- Physical Properties AUGER EFFECT BORON COMPOUNDS BORON NITRIDES BORON OXIDES BRANCHING RATIO CHALCOGENIDES CHEMICAL ANALYSIS CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY Condensed matter: electronic structure, electrical, magnetic, and optical properties DATA ANALYSIS ELECTRONIC STRUCTURE Exact sciences and technology EXCITONS K SHELL MATERIALS SCIENCE NITRIDES NITROGEN COMPOUNDS NONDESTRUCTIVE ANALYSIS Optical properties and condensed-matter spectroscopy and other interactions of matter with particles and radiation Other interactions of matter with particles and radiation OXIDES OXYGEN COMPOUNDS PHONONS Physics PNICTIDES QUASI PARTICLES 665100 > Nuclear Techniques in Condensed Matter Physics > (1992-) SCREENING SPECTRAL SHIFT X-RAY EMISSION ANALYSIS X-RAY FLUORESCENCE ANALYSIS
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Beschreibung
Zusammenfassung:	We investigate the excitation energy dependence of the boron [ital K] soft-x-ray emission of B[sub 2]O[sub 3] and hexagonal-BN using synchrotron radiation. When exciting into the core exciton state the spectra are shifted to lower energy by 1.5 and 1.8 eV, respectively. This shift is found to be a result of phonon relaxation and differences in initial-and final-state electronic screening.
ISSN:	0031-9007 1079-7114
DOI:	10.1103/physrevlett.70.238