Development of a microcalorimeter with transition edge sensor for detection of LX rays emitted by transuranium elements
| Autor: | Takahiro Umeno, Makoto Maeda, Koji Takasaki, Keiichi Tanaka, Keisuke Maehata, Keisuke Nakamura, Takashi Yasumune, Takumaro Momose, Kenji Ishibashi |
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| Rok vydání: | 2011 |
| Předmět: |
Photon
Calorimetry Radiation Dosage Phase Transition Operating temperature Radiation Monitoring Humans Radiology Nuclear Medicine and imaging Irradiation Titanium Physics Range (particle radiation) Americium Radiation Radiological and Ultrasound Technology Spectrometer X-Rays Bilayer Temperature Public Health Environmental and Occupational Health X-ray Equipment Design General Medicine Gold Transition edge sensor Atomic physics |
| Zdroj: | Radiation Protection Dosimetry. 146:88-91 |
| ISSN: | 1742-3406 0144-8420 |
| Popis: | A transition edge sensor (TES) microcalorimeter has been developed for use as an energy dispersive X-ray spectrometer. The TES microcalorimeter is a thermal detector that enables one to determine the energy of an incident photon by measuring the resultant increase in temperature. In this work, a Ti/Au TES microcalorimeter was developed to measure LX rays emitted by transuranium elements. The phase transition temperature was set at ~200 mK by using a bilayer structure composed of a 110-nm-thick Au layer and a 40-nm-thick Ti layer. An Au of 5 µm thickness was deposited on the Ti/Au bilayer to achieve an absorption efficiency of 35-80 % for the energy range of LX rays (10-25 keV). The developed TES microcalorimeter was irradiated with LX rays emitted by an (241)Am source at an operating temperature of 140 mK. An energy resolution of ~80 eV (full width at the half maximum) was obtained for L(β1)X ray of 17.75 keV. |
| Databáze: | OpenAIRE |
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