Development of Measurement Technique of Fast Neutron Flux with Nuclear Emulsion in the Underground Laboratory

• Project/Area Number: 23740185
• Research Category: Grant-in-Aid for Young Scientists (B)
• Allocation Type: Multi-year Fund
• Research Field: Particle/Nuclear/Cosmic ray/Astro physics
• Research Institution: Nagoya University
• Principal Investigator: MORISHIMA Kunihiro 名古屋大学, エコトピア科学研究所, 研究員 (30377915)
• Project Period (FY): 2011 – 2012
• Project Status: Completed (Fiscal Year 2013)
• Budget Amount: ¥3,250,000 (Direct Cost: ¥2,500,000、Indirect Cost: ¥750,000); Fiscal Year 2012: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000); Fiscal Year 2011: ¥2,080,000 (Direct Cost: ¥1,600,000、Indirect Cost: ¥480,000)
• Keywords: 高速中性子 / 原子核乾板 / 感度制御 / 中性子 / 素粒子 / 自動解析 / 素粒子実験 / 自動飛跡読み取り

Research Abstract

Nuclear emulsion is high sensitive photographic film used for detection of three-dimensional trajectory of charged particles. The principle of the measurement of fast neutron with nuclear emulsion is the detection of proton recoiled by neutron. However, electron tracks scattered by gamma rays are also recorded in the nuclear emulsion. These electron tracks are major background for fast neutron measurement. We developed new nuclear emulsion by adding a tiny amount of the rhodium into the silver bromide crystals in order to control the sensitivity and achieved high performance of electron background rejection. We can use this new emulsion to measure fast neutron flux in the underground experiment.

Research Products

• [Journal Article] Development of 14-MeV neutron measurement with nuclear emulsion for D-T burning plasma diagnostics (2013)
  • Author(s): K. Morishima, M. Isobe, H. Tomita, T. Nakano, M. Nakamura, M. Sasao
  • Journal Title: Plasma Fusion Res Volume: Volume 8 Pages: 2402164-2402164
  • NAID: 130004942932
• [Journal Article] Development of Automated Nuclear Emulsion Analyzing System (2013)
  • Author(s): K. Morishima, K. Hamada, R. Komatani, T. Nakano, K. Kodama
  • Journal Title: Radiation Measurements Volume: 50 Pages: 237-237
• [Journal Article] Development of Fusion Neutron Pinhole Imaging using Nuclear Emulsions for Energetic Ion Diagnostics (2013)
  • Author(s): H. Tomita, F. Yamashita, Y. Yamamoto, H. Minato, K. Morishima, Y. Sakai, M. Isobe, K. Ogawa, T. Nakano, M. Nakamura, J. Kawarabayashi, T. Iguchi, K. Ochiai and M. Cheon
  • Journal Title: Plasma Fusion Res Volume: Volume 8 Pages: 2406095-2406095
  • NAID: 130005076171
• [Journal Article] Fast neutron detection under intense gamma-ray fields with novel nuclear emulsion technique (2013)
  • Author(s): K. Ishihara, K. Takagi, H. Minato, J. Kawarabayashi, H. Tomita, S. Maeda, T. Naka, K. Morishima, T. Nakano, M. Nakamura, T. Iguchi
  • Journal Title: Radiation Measurements Volume: 55 Pages: 79-82
• [Journal Article] 原子核乾板による高エネルギー中性子計測 (2011)
  • Author(s): 森島邦博
  • Journal Title: 放射線 Volume: Vol.37, No.3 Pages: 173-178
  • NAID: 10029794193
• [Presentation] 高速中性子検出用原子核乾板の開発 (2014)
  • Author(s): 待井翔吾、森島邦博、中竜大、桑原謙一
  • Organizer: 2014年度日本写真学会年次大会
  • Place of Presentation: 千葉
• [Presentation] 高速中性子トラッキング検出器の開発(1)原子核乾板 (2014)
  • Author(s): 待井翔吾、浅田貴志、中竜大、中野敏行、森島邦博、吉本雅浩
  • Organizer: 日本物理学会69回年次大会
  • Place of Presentation: 東海大学
• [Presentation] 高速中性子トラッキング検出器の開発(2)読み取りシステム (2014)
  • Author(s): 吉本雅浩、浅田貴志、中竜大、中野敏行、待井翔吾、森島邦博
  • Organizer: 日本物理学会69回年次大会
  • Place of Presentation: 東海大学
• [Presentation] 高速中性子検出用原子核乾板の開発 (2014)
  • Author(s): 待井翔吾、森島邦博、中竜大、桑原謙一
  • Organizer: 2014年度日本写真学会年次大会
  • Place of Presentation: 千葉大学
• [Presentation] 高速中性子トラッキング検出器の開発（１）原子核乾板 (2014)
  • Author(s): 待井翔吾、浅田貴志、中竜大、中野敏行、森島邦博、吉本雅浩
  • Organizer: 日本物理学会第69回年次大会
  • Place of Presentation: 東海大学
• [Presentation] 高速中性子トラッキング検出器の開発（２）読み取りシステム (2014)
  • Author(s): 吉本雅浩、浅田貴志、中竜大、中野敏行、待井翔吾、森島邦博
  • Organizer: 日本物理学会第69回年次大会
  • Place of Presentation: 東海大学
• [Presentation] Development of fast neutron detector with nuclear emulsion (2013)
  • Author(s): Kunihiro Morishima、Shogo Machii、Tatsuhiro Naka、Kenichi Kuwabara
  • Organizer: ISETS2013
  • Place of Presentation: Nagoya
• [Presentation] 中性子とガンマ線の識別能力向上を目指した原子核乳剤の開発 (2013)
  • Author(s): 待井翔吾、桑原謙一、森島邦博
  • Organizer: 2013年度日本写真学会秋季研究発表会
  • Place of Presentation: 京都
• [Presentation] Development of fast neutron and proton detector in high gamma ray field and its applications (2013)
  • Author(s): Kunihiro Morishima
  • Organizer: Workshop on Nuclear Track Emulsion and its Future
  • Place of Presentation: Romania
• [Presentation] 高速自動解析に適した中性子検出用原子核乾板の開発 (2013)
  • Author(s): 森島邦博
  • Organizer: 日本写真学会
  • Place of Presentation: 千葉
• [Presentation] Development of an Automated Nuclear Emulsion Analyzing System and its applications (2013)
  • Author(s): K. Morishima
  • Organizer: QFPU Final International Forum
  • Place of Presentation: Gifu, Japan
• [Presentation] Development of fast neutron detector with nuclear emulsion (2013)
  • Author(s): Kunihiro Morishima, Shogo Machii, Tatsuhiro Naka, Kenichi Kuwabara
  • Organizer: ISETS2013
  • Place of Presentation: Nagoya University
• [Presentation] 中性子とガンマ線の識別能力向上を目指した原子核乳剤の開発 (2013)
  • Author(s): 待井翔吾、桑原謙一、森島邦博
  • Organizer: 2013年度日本写真学会秋季研究発表会
  • Place of Presentation: 京都工芸繊維大学
• [Presentation] Development of 14MeV neutron measurement with nuclear emulsion for D-T burning plasma diagnostics (2012)
  • Author(s): K. Morishima, M. Isobe, H. Tomita, T. Nakano, M. Nakamura, M. Sasao
  • Organizer: 22nd International Toki Conference
  • Place of Presentation: Gifu, Japan
• [Presentation] 原子核乾板による地下環境中性子フラックス測定技術の開発 (2012)
  • Author(s): 森島邦博、中竜大、浅田貴志、中野敏行、佐藤修、中村光廣、De Lellis Giovanni 、Sirignano Chiara、D'Ambrosio Nicola
  • Organizer: 日本物理学会
  • Place of Presentation: 京都
• [Presentation] Nuclear Emulsion Scanning Facility and Development of Ultra High Speed System in Nagoya University (2012)
  • Author(s): K. Morishima
  • Organizer: The XXV International Conference on Neutrino Physics and Astrophysics, Neutrino
  • Place of Presentation: Kyoto, Japan
• [Presentation] 原子核乾板自動解析システムの開発と応用 (2012)
  • Author(s): 森島邦博
  • Organizer: 18th ICEPP Symposium
  • Place of Presentation: 長野
• [Presentation] Development of 14MeV neutron measurement with nuclear emulsion for D-T burning plasma diagnostics (2012)
  • Author(s): K. Morishima, M. Isobe, H. Tomita, T. Nakano, M. Nakamura, M. Sasao
  • Organizer: 22nd International Toki Conference
  • Place of Presentation: 土岐
• [Presentation] Nuclear Emulsion Scanning Facility and Development of Ultra High Speed System in Nagoya University (2012)
  • Author(s): K. Morishima
  • Organizer: The XXV International Conference on Neutrino Physics and Astrophysics, Neutrino 2012
  • Place of Presentation: 京都
• [Presentation] Development of Automated Nuclear Emulsion Analyzing System and Its Application (2011)
  • Author(s): K. Morishima, K. Hamada, R. Komatani, T. Nakano, K. Kodama
  • Organizer: 25th International Conference on Nuclear Tracks in Solids
  • Place of Presentation: Puebla, Mexico
• [Presentation] 原子核乾板を用いた中性子検出技術の開発 (2011)
  • Author(s): 森島邦博、増田光、駒谷良輔、中野敏行
  • Organizer: 日本物理学会
  • Place of Presentation: 弘前
• [Presentation] 原子核乾板を用いた中性子計測技術の開発 (2011)
  • Author(s): 森島邦博
  • Organizer: 日本写真学会
  • Place of Presentation: 東京
• [Presentation] 原子核乾板を用いた中性子検出技術の開発 (2011)
  • Author(s): 森島邦博、中竜大、中野敏行
  • Organizer: 日本物理学会
  • Place of Presentation: 弘前大学
• [Presentation] Development of Automated Nuclear Emulsion Analyzing System (2011)
  • Author(s): K. Morishima, K. Hamada, R. Komatani, T. Nakano, K. Kodama
  • Organizer: 25th International Conference on Nuclear Tracks in Solids
  • Place of Presentation: メキシコ、プエブラ