Browsing by Subject "Radiometry"
Now showing items 1-9 of 9
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Article
Alpha radiometry of uranium in surface and ground waters by liquid scintillation counting after separation of the radionuclide by cation exchange
(2008)The alpha radioactivity of surface and ground water samples has been determined by liquid scintillation counting (LSC) after chemical preparation of the samples by cation exchange using the Chelex 100 resin. The method ...
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Conference Object
Applications of negative-refractive-index transmission-line (NRI-TL) metamaterials in planar antennas and their feed networks
(2007)Negative-refractive-index transmission-line (NRI-TL) metamaterials and introduced and their fundamental properties are described. Following this, various applications using NRI-TLs are shown and their salient characteristics ...
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Article
Diagnostics of nonradiative defects in the bulk and surface of brewster-cut Ti:sapphire laser materials using photothermal radiometry
(1997)The understanding of the problem of nonradiative energy conversion in solid-state laser materials is a key factor in improving the overall efficiency of solid-state lasers. Furthermore, the reduction of the heat generated ...
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Article
Lithological and seasonal variations in radon concentrations in Cypriot groundwaters
(2010)The paper presents and discusses radon activity concentrations in Cypriot groundwater systems as a function of the background lithology and seasonal/meteorological conditions using an airborne radon monitoring system (ARM) ...
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Article
Photothermal radiometry on nickel (pigmented aluminium oxide) selective solar absorbing surface coatings
(1998)Photothermal radiometry (PTR) is applied to characterize nickel-pigmented aluminium oxide solar absorbing coatings. A modulated laser beam is used to heat the solar samples. The subsequent emission of thermal radiation is ...
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Article
Seasonal variation of the alpha-radioactivity concentration in natural water systems in Cyprus
(2011)The study deals with the seasonal variation of the total alpha-radioactivity and the U-238/234 radioactivity concentration of ground waters in Cyprus. The radiometric measurements were performed after pre-concentration and ...
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Article
Single-Ended Infrared Photothermal Radiometric Measurement of Quantum Efficiency and Metastable Lifetime in Solid-State Laser Materials: The Case of Ruby (Cr3+: Al2O3)
(1993)A new, simple, and self-consistent frequency-scanned photothermal radiometric (PTR) detection scheme was applied to the measurement of the metastable state de-excitation parameters of a ruby laser rod. From the extrema of ...
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Article
Uranium analysis in Cypriot groundwaters by total alpha-radiometry and alpha-spectroscopy
(2011)Two different alpha-radiometric methods (e.g. alpha-spectroscopy and alpha-particle counting) have been applied to the determination of uranium in Cypriot groundwater samples after separation of the radionuclides by cation ...
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Doctoral Thesis Open Access
Φωτοθερμικός χαρακτηρισμός ημιαγωγών και ηλιακών επιλεκτικών επιφανειών
(Πανεπιστήμιο Κύπρου, Σχολή Θετικών και Εφαρμοσμένων Επιστημών / University of Cyprus, Faculty of Pure and Applied Sciences, 1999)Η εργασία αυτή έχει σαν στόχο τον χαρακτηρισμό υλικών υψηλής τεχνολογίας με δυο μη καταστροφικές τεχνικές, την Φωτοθερμική Ραδιομετρία (PTR) και την Φωτο-Διαμορφωμένη Θερμική Ανακλαστικότητα (PMTR). Στην μεγαλύτερη της ...