Innovative analysis method for plutonium isotopes with utilizing the alpha-ray spectroscopy and the intensity ratio of L X-ray emission.

• Project/Area Number: 24360397
• Research Category: Grant-in-Aid for Scientific Research (B)
• Allocation Type: Partial Multi-year Fund
• Section: 一般
• Research Field: Nuclear engineering
• Research Institution: Kyushu University
• Principal Investigator: Mahatma Keisuke 九州大学, 工学(系)研究科(研究院), 准教授 (30190317)
• Co-Investigator(Kenkyū-buntansha): TAKASAKI Koji 国立研究開発法人日本原子力研究開発機構, 大洗研究開発センター安全管理部, 次長 (00446444) ; MITSUDA Kazuhisa 国立研究開発法人宇宙航空研究開発機構, 宇宙科学研究所, 教授 (80183961)
• Co-Investigator(Renkei-kenkyūsha): IYOMOTO Naoko 九州大学, 大学院工学研究院, 准教授 (40508173) ; SHIGYO Nobuhiro 九州大学, 大学院工学研究院, 助教 (40304836)
• Project Period (FY): 2012-04-01 – 2016-03-31
• Project Status: Completed (Fiscal Year 2015)
• Budget Amount: ¥18,200,000 (Direct Cost: ¥14,000,000、Indirect Cost: ¥4,200,000); Fiscal Year 2015: ¥3,640,000 (Direct Cost: ¥2,800,000、Indirect Cost: ¥840,000); Fiscal Year 2014: ¥4,550,000 (Direct Cost: ¥3,500,000、Indirect Cost: ¥1,050,000); Fiscal Year 2013: ¥5,330,000 (Direct Cost: ¥4,100,000、Indirect Cost: ¥1,230,000); Fiscal Year 2012: ¥4,680,000 (Direct Cost: ¥3,600,000、Indirect Cost: ¥1,080,000)
• Keywords: マイクロカロリーメータ / 超伝導転移端センサー / プルトニウム同位体分析 / L X線スペクトル計測 / 高エネルギー分解能 / α線スペクトル計測 / マイクロカロリメータ / LX線スペクトル計測 / 超伝導相転移端センサー / 原子力計測・放射線物理 / 放射線工学・ビーム科学

Outline of Final Research Achievements

We proposed a new method of analyzing Pu isotopes with using the energy spectrum alpha-rays and the intensity ratio of L X-rays. It is required to obtain high-reliable data of the emission probability of L X-rays in α decay of Pu isotopes and Am-241. Spectroscopic measurements of L X-rays emitted from a mixture source of Pu-238/239 and Am-241 were conducted with TES microcalorimeters which were developed in this work. The value of full-width at half maximum energy resolution was found to be better than 50 eV at peaks appear in experimental energy spectrum of L X-rays. Main peaks of L X-rays were clearly identified in the experimental energy spectrum. High-reliable data of the emission probability of L X-rays in α decay of Pu isotopes and Am-241 are expected to be obtained by precise analysis of the experimental energy spectrum.

Research Products

• [Journal Article] Peak identification of L X-ray spectra of elemental Np and U (2015)
  • Author(s): M. Maeda, K. Maehata, N. IYOMOTO, K. ISHIBASHI, K Takasaki, K. Nakamura, K. Aoki, K. Mitsuda, K Tanaka, Y. Yamanaka
  • Journal Title: Journal of Nuclear Science and Technology Volume: 52 Pages: 509-513
  • DOI: 10.1080/00223131.2014.957744
  • Peer Reviewed / Acknowledgement Compliant
• [Journal Article] Response of a Superconducting Transition-Edge Sensor Microcalorimeter with a Mushroom-shaped Absorber to L X-rays Emitted by Transuranium Elements (2015)
  • Author(s): K. Maehata, M. Maeda, N. IYOMOTO, K. ISHIBASHI, K. Nakamura, K. Aoki, K. Takasaki, K. Mitsuda, K. Tanaka
  • Journal Title: IEICE Transactions on Electronics Volume: E98.C Issue: 3 Pages: 178-185
  • DOI: 10.1587/transele.E98.C.178
  • NAID: 130004841701
  • ISSN: 0916-8524, 1745-1353
  • Peer Reviewed / Acknowledgement Compliant
• [Journal Article] Spectroscopic measurement of L X-rays emitted by transuranium elements by using TES Microcalorimeter (2014)
  • Author(s): Makoto Maeda, et. al.
  • Journal Title: Journal of Low Temperature Physics Volume: (印刷中) Issue: 5-6 Pages: 1046-1052
  • DOI: 10.1007/s10909-013-1012-5
  • Peer Reviewed
• [Journal Article] Development of 4-Pixel-Array TES Microcalorimeters with Mushroom-Shaped Absorbers with Insulating Layers Supporting Overhang Regions (2014)
  • Author(s): K. Maehata, N. Iyomoto, M. Maeda, S. Ezaki, A. Takano, S. Matsumura, T. Hara, K. Mitsuda, N. Y. Yamasaki, K. Tanaka
  • Journal Title: Journal of Low Temperature Physics Volume: (印刷中) Issue: 3-4 Pages: 578-583
  • DOI: 10.1007/s10909-014-1113-9
  • Peer Reviewed
• [Journal Article] SPECTROSCOPIC MEASUREMENT OF L X-RAYS EMITTED BY TRANSURANIUM ELEMENTS BY TES MICROCALORIMETER (2014)
  • Author(s): Makoto Maeda, Keisuke Maehata, Naoko IYOMOTO, Kenji ISHIBASHI, Koji Takasaki, Keisuke Nakamura, Katsunori Aoki, Kazuhisa Mitsuda, Keiichi Tanaka
  • Journal Title: Radiation Detectors and Their Uses, High Energy Accelerator Research Organization KEK Proceedings Volume: 2013-9 Pages: 63-71
  • Peer Reviewed
• [Presentation] TES型マイクロカロリーメータを用いた超ウラン元素L X線の分析 (2016)
  • Author(s): 杉本哲也, 前畑京介, 伊豫本直子, 石橋 健二, 中村圭佑, 森下祐樹, 高崎浩司, 満田和久
  • Organizer: 日本原子力学会2016年春の年会
  • Place of Presentation: 東北大学川内キャンパス
  • Year and Date: 2016-03-27
• [Presentation] TES型マイクロカロリーメータによる244Cm線源のL X線スペクトル計測 (2016)
  • Author(s): 前畑京介, 杉本哲也, 伊豫本直子, 石橋 健二, 中村圭佑, 森下祐樹, 高崎浩司, 満田和久
  • Organizer: 第63回応用物理学会春季学術講演会
  • Place of Presentation: 東京工業大学大岡山キャンパス
  • Year and Date: 2016-03-19
• [Presentation] ANALYSIS OF L X-RAY SPECTRA OF TRANSURANIUM ELEMENTS MEASURED BY A MICROCALORIMETER (2016)
  • Author(s): T. Sugimoto, K. Nakamura, M. Maeda, K. Maehata, N. IYOMOTO, K. ISHIBASHI, K. Takasaki, K. Mitsuda
  • Organizer: The First Symposium on Radiation Detectors and Their Uses
  • Place of Presentation: 高エネルギー加速器研究機構つくばキャンパス
  • Year and Date: 2016-01-19
• [Presentation] TES型マイクロカロリーメータを用いた超ウラン元素LX線スペクトル測定 (2015)
  • Author(s): 中村圭佑, 前田 亮, 森下祐樹, 高崎浩司, 前畑京介, 伊豫本直子, 石橋 健二, 満田和久
  • Organizer: 日本原子力学会2015年秋の大会
  • Place of Presentation: 茨城大学日立キャンパス
  • Year and Date: 2015-09-10
• [Presentation] Development of a Microcalorimeter for Measurement of L X-Rays Emitted from Transuranium Elements (2014)
  • Author(s): K. Nakamura, M. Maeda, K. Maehata, N. IYOMOTO, K. ISHIBASHI, K. Takasaki, K. Mitsuda
  • Organizer: 2014 IEEE Nuclear Science Symposium and Medical Imaging Conference with the 21st Symposium on Room--Temperature Semiconductor X--Ray and Gamma--Ray Detectors
  • Place of Presentation: Washington State Convention Center, Seattle Washington, USA
  • Year and Date: 2014-11-09 – 2014-11-15
• [Presentation] TES型マイクロカロリーメータを用いた超ウラン元素LX線スペクトル高精度分光分析に係る研究 (2014)
  • Author(s): 中村圭佑
  • Organizer: 日本原子力学会2014年春の年会
  • Place of Presentation: 東京都市大学世田谷キャンパス
• [Presentation] TES型マイクロカロリーメータによる241Am、238Pu及び239Pu線源のLX線スペクトル計測 (2014)
  • Author(s): 前畑京介
  • Organizer: 2014年第61回応用物理学会春季学術講演会
  • Place of Presentation: 青山学院大学相模原キャンパス
  • Invited
• [Presentation] TES型マイクロカロリーメータを用いた超ウラン元素LX線分光分析 (2013)
  • Author(s): 前田 亮
  • Organizer: 2013年第60回応用物理半会春季学術講演会
  • Place of Presentation: 神奈川工科大学
  • Year and Date: 2013-03-30
• [Presentation] TES型マイクロカロリーメータを用いた超ウラン元素LX線分光分析 (2013)
  • Author(s): 前田 亮
  • Organizer: 日本原子力学会2013年廖の年会
  • Place of Presentation: 近畿大学東大阪キャンパス
  • Year and Date: 2013-03-27
• [Presentation] プルトニウム定量評価のための超ウラン元素LX線スペクトルの解析 (2013)
  • Author(s): 前田 亮
  • Organizer: 2013年第74回応用物理学会秋季学術講演会
  • Place of Presentation: 同志社大学京田辺キャンパス
• [Presentation] 高分解能超ウラン元素LX線スペクトルの解析 (2013)
  • Author(s): 前田 亮
  • Organizer: 日本原子力学会2013年秋の大会
  • Place of Presentation: 八戸工業大学
• [Presentation] Spectroscopic measurement of L X-rays emitted by transuranium elements by using TES Microcalorimeter (2013)
  • Author(s): M. Maeda
  • Organizer: 15th International Workshop on Low Temperature Detectors
  • Place of Presentation: The Pasadena Convention Center, Pasadena, California
• [Presentation] Development of 4-pixel array TES microcalorimeters with a mushroom shaped absorber supported by an insulating layer in an overhang region (2013)
  • Author(s): K. Maehata
  • Organizer: 15th International Workshop on Low Temperature Detectors
  • Place of Presentation: The Pasadena Convention Center, Pasadena, California
• [Presentation] 超ウラン元素LX線スペクトル計測用4ビクセルTES型X線検出器の開発 (2012)
  • Author(s): 前田 亮
  • Organizer: 日本原子力学会2012年秋の大会
  • Place of Presentation: 広島大学東広島キャンパス
  • Year and Date: 2012-09-20
• [Presentation] 超ウラン元素LX線計測用4ビクセル全面吸収体認S型マイクロカロリーメータの開発 (2012)
  • Author(s): 前田 亮
  • Organizer: 2012年秋第73回応用物理学会学術講演会
  • Place of Presentation: 愛媛大学城北地区
  • Year and Date: 2012-09-13