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Measurement of X-ray spectra using a Lu2(SiO4)O-multipixel-photon detector with changes in the pixel number.
Yamaguchi, Satoshi; Sato, Eiichi; Oda, Yasuyuki; Nakamura, Ryuji; Oikawa, Hirobumi; Yabuushi, Tomonori; Ariga, Hisanori; Ehara, Shigeru.
Afiliación
  • Yamaguchi S; Department of Radiology, School of Medicine, Iwate Medical University, 19-1 Uchimaru, Morioka, Iwate 020-0023, Japan. Electronic address: dresato@iwate-med.ac.jp.
  • Sato E; Department of Physics, Iwate Medical University, 2-1-1 Nishitokuta, Yahaba, Iwate 028-3694, Japan.
  • Oda Y; Department of Physics, Iwate Medical University, 2-1-1 Nishitokuta, Yahaba, Iwate 028-3694, Japan.
  • Nakamura R; Department of Radiology, School of Medicine, Iwate Medical University, 19-1 Uchimaru, Morioka, Iwate 020-0023, Japan.
  • Oikawa H; Department of Radiology, School of Medicine, Iwate Medical University, 19-1 Uchimaru, Morioka, Iwate 020-0023, Japan.
  • Yabuushi T; Department of Radiology, School of Medicine, Iwate Medical University, 19-1 Uchimaru, Morioka, Iwate 020-0023, Japan.
  • Ariga H; Department of Radiology, School of Medicine, Iwate Medical University, 19-1 Uchimaru, Morioka, Iwate 020-0023, Japan.
  • Ehara S; Department of Radiology, School of Medicine, Iwate Medical University, 19-1 Uchimaru, Morioka, Iwate 020-0023, Japan.
Appl Radiat Isot ; 103: 25-30, 2015 Sep.
Article en En | MEDLINE | ID: mdl-26046520
To measure X-ray spectra with high count rates, we developed a detector consisting of a Lu2(SiO4)O [LSO] crystal with a decay time of 40 ns and a multipixel photon counter (MPPC). The photocurrents flowing through the MPPC are converted into voltages and amplified by a high-speed current-voltage amplifier, and event pulses from the amplifier are sent to a multichannel analyzer to measure spectra. We used three MPPCs of 100, 400 and 1600 pixels/mm(2), and the MPPCs were driven under pre-Geiger mode at a temperature of 20 °C. At a tube voltage of 100 kV and a tube current of 5.0 µA, the maximum count rate was 12.8 kilo-counts per second. The event-pulse widths were 200 ns, and the energy resolution was 53% at 59.5 keV using a 100-pixel MPPC.
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Fotometría / Radiometría / Rayos X / Procesamiento de Señales Asistido por Computador / Amplificadores Electrónicos / Lutecio Tipo de estudio: Diagnostic_studies / Evaluation_studies Idioma: En Revista: Appl Radiat Isot Asunto de la revista: MEDICINA NUCLEAR / SAUDE AMBIENTAL Año: 2015 Tipo del documento: Article Pais de publicación: Reino Unido
Texto completo
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Fotometría / Radiometría / Rayos X / Procesamiento de Señales Asistido por Computador / Amplificadores Electrónicos / Lutecio Tipo de estudio: Diagnostic_studies / Evaluation_studies Idioma: En Revista: Appl Radiat Isot Asunto de la revista: MEDICINA NUCLEAR / SAUDE AMBIENTAL Año: 2015 Tipo del documento: Article Pais de publicación: Reino Unido