کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
9845904 | 1526522 | 2005 | 4 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
VUV spectroscopy of pure LiCaAlF6 crystals
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
فیزیک و نجوم
ابزار دقیق
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
Reflection, excitation and luminescence spectra of as-grown and X-ray irradiated high-purity LiCaAlF6 crystals were studied in the temperature range of 10-300Â K using synchrotron radiation in VUV. The intrinsic luminescence of samples at 10Â K consists of a non-elementary broad band with maximum at 4.4Â eV under excitation at 11.45Â eV. It is ascribed to the radiative decay of self-trapped excitons. The energy gap is estimated to be 12.65Â eV in LiCaAlF6. Under interband excitation a red shift of luminescence was observed. The electron-hole recombination leads to the emission peaking at 3.7Â eV. The excitation processes and origin of overlapping emissions of LiCaAlF6 are discussed.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment - Volume 537, Issues 1â2, 21 January 2005, Pages 291-294
Journal: Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment - Volume 537, Issues 1â2, 21 January 2005, Pages 291-294
نویسندگان
M. Kirm, M. True, S. Vielhauer, G. Zimmerer, N.V. Shiran, I. Shpinkov, D. Spassky, K. Shimamura, N. Ichinose,