Počet záznamů: 1
Detectors of Gamma Rays and Alpha Particles Based on Ta-Doped InP Converted to the Semi-Insulating State by Annealing
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SYSNO ASEP 0341437 Druh ASEP J - Článek v odborném periodiku Zařazení RIV J - Článek v odborném periodiku Poddruh J Článek ve WOS Název Detectors of Gamma Rays and Alpha Particles Based on Ta-Doped InP Converted to the Semi-Insulating State by Annealing Tvůrce(i) Žďánský, Karel (URE-Y)
Gorodynskyy, Vladyslav (URE-Y)
Pekárek, Ladislav (FZU-D)Zdroj.dok. IEEE Transactions on Nuclear Science. - : Institute of Electrical and Electronics Engineers - ISSN 0018-9499
Roč. 56, č. 5 (2009), s. 2997-3001Poč.str. 5 s. Jazyk dok. eng - angličtina Země vyd. US - Spojené státy americké Klíč. slova radiation detection ; semiconductor doping ; crystal growth Vědní obor RIV BM - Fyzika pevných látek a magnetismus CEP KAN400670651 GA AV ČR - Akademie věd KAN401220801 GA AV ČR - Akademie věd IBS2067354 GA AV ČR - Akademie věd CEZ AV0Z20670512 - URE-Y (2005-2011) AV0Z10100520 - FZU-D (2005-2011) UT WOS 000271100600031 DOI 10.1109/TNS.2009.2027902 Anotace InP crystals were synthesized with a Ta admixture grown by the Czochralski technique, and wafers cut from the grown crystals were converted to the SI state by high-temperature annealing. The good detection performance of such material-based detectors has been tested with alpha-particles from a Am-241 source (5.48 MeV). The charge collection efficiency (CCE) of 84% and relative energy resolution at full width at half maximum (FWHM) of 5% were obtained at room temperature 295 K (RT). Low-energy gamma-photons of 122 keV from a Co-57 source and gamma-photons from a Cs-137 source were detected at 242 K, 272 K, and 295 K, respectively. The values of CCE 88% and FWHM 16 keV of 122 keV photons and CCE 87% and FWHM 48 keV of gamma-photons of 662 keV were obtained at reduced temperatures. A pulse-height spectrum of 662 keV gamma-photons registered at room temperature is also shown in this work. Pracoviště Ústav fotoniky a elektroniky Kontakt Petr Vacek, vacek@ufe.cz, Tel.: 266 773 413, 266 773 438, 266 773 488 Rok sběru 2010
Počet záznamů: 1