Isotope Separation of 48Ca Double Beta Decay Nuclei

• Project/Area Number: 21740183
• Research Category: Grant-in-Aid for Young Scientists (B)
• Allocation Type: Single-year Grants
• Research Field: Particle/Nuclear/Cosmic ray/Astro physics
• Research Institution: Osaka University
• Principal Investigator: UMEHARA Saori Osaka University, 核物理研究センター, 助教 (10379282)
• Project Period (FY): 2009 – 2010
• Project Status: Completed (Fiscal Year 2010)
• Budget Amount: ¥4,550,000 (Direct Cost: ¥3,500,000、Indirect Cost: ¥1,050,000); Fiscal Year 2010: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000); Fiscal Year 2009: ¥3,120,000 (Direct Cost: ¥2,400,000、Indirect Cost: ¥720,000)
• Keywords: 同位体濃縮 / 二重ベータ崩壊 / カルシウム48 / カルシウム

Research Abstract

Among double beta decay nuclei, ^<48>Ca has an advantage for a double beta decay measurement. Enrichment of ^<48>Ca will further improve sensitivity for a neutrino-less double beta decay measurement. We have studied ^<48>Ca enrichment with chemical isotope separation by using crown ether and obtained enriched ^<48>Ca. This technique will be applied for improvement of sensitivity of a double beta decay detector.

Research Products

• [Journal Article] Mass dependence of calcium isotope fractionations in crown-ether resin chromatography (2010)
  • Author(s): Y.Fujii, S.Umehara, 他
  • Journal Title: Isotopes in Environmental and Health Studies 46 Pages: 233-241
  • Peer Reviewed
• [Journal Article] Study of double beta decay of Ca-48 by CANDLES (2010)
  • Author(s): S.Umehara, 他
  • Journal Title: AIP Conf.Proc 1235 Pages: 287-293
  • Peer Reviewed
• [Journal Article] Study of 48Ca double beta decay with CANDLES (2010)
  • Author(s): I.Ogawa, S.Umehara, 他
  • Journal Title: J.Phys. Conf.Ser 203
  • Peer Reviewed
• [Journal Article] Mass dependence of calcium isotope fractionations in crown-ether resin chromatography (2010)
  • Author(s): Y.Fujii, S.Umehara
  • Journal Title: Isotopes in Environmental and Health Studies Volume: 46 Pages: 233-241
  • Peer Reviewed
• [Journal Article] Study of double beta decay of Ca-48 by CANDLES (2010)
  • Author(s): S.Umehara
  • Journal Title: AIP Conf.Proc. Volume: 1235 Pages: 287-293
  • Peer Reviewed
• [Journal Article] Study of 48Ca double beta decay with CANDLES (2010)
  • Author(s): I.Ogawa, S.Umehara
  • Journal Title: J.Phys.Conf.Ser. Volume: 203
  • Peer Reviewed
• [Presentation] CANDLESによる二重ベータ崩壊の研究(48)-検出器の開発状況- (2011)
  • Author(s): 梅原さおり
  • Organizer: 第66回 日本物理学会
  • Place of Presentation: 新潟
• [Presentation] CANDLESによる二重ベータ崩壊の研究(44)-地下実験室における検出器の開発状況- (2010)
  • Author(s): 梅原さおり
  • Organizer: 日本物理学会2010年秋季大会
  • Place of Presentation: 福岡
  • Year and Date: 2010-09-14
• [Presentation] クラウンエーテル樹脂を用いたカルシウム同位体分離(5)クロマトグラフィーによる長距離泳動実験 (2010)
  • Author(s): 梅原さおり
  • Organizer: 日本原子力学会2010年春の年会
  • Place of Presentation: 茨城大学水戸
  • Year and Date: 2010-03-26
• [Presentation] クラウンエーテル樹脂を用いたカルシウム同位体分離 (5)クロマトグラフィーによる長距離泳動実験 (2010)
  • Author(s): 梅原さおり
  • Organizer: 日本原子力学会2010年春の年会
  • Place of Presentation: 茨城大学 水戸
  • Year and Date: 2010-03-26
• [Presentation] CANDLESによる二重ベータ崩壊の研究-CANDLESプロジェクトの開発状況- (2010)
  • Author(s): 梅原さおり
  • Organizer: 日本物理学会第65回年次大会
  • Place of Presentation: 岡山大学岡山
  • Year and Date: 2010-03-21
• [Presentation] CANDLESによる二重ベータ崩壊の研究-CANDLESフロジェクトの開発状況 (2010)
  • Author(s): 海原さおり
  • Organizer: 日本物理学会第65回年次大会
  • Place of Presentation: 岡山大学 岡山
  • Year and Date: 2010-03-21
• [Presentation] クラウンエーテル樹脂を用いたカルシウム同位体分離 (2010)
  • Author(s): 梅原さおり
  • Organizer: 第8回同位体科学研究会
  • Place of Presentation: 産業総合技術研究所東京
  • Year and Date: 2010-03-05
• [Presentation] クラウンエーテル樹脂を用いたカルシウム同位体分離 (2010)
  • Author(s): 海原さおり
  • Organizer: 第8回同位体科学研究会
  • Place of Presentation: 産業総合技術研究所 東京
  • Year and Date: 2010-03-05
• [Presentation] Neutrino-less double beta decay of 48Ca studied by CaF2 Scintillator (2009)
  • Author(s): Saori Umehara
  • Organizer: CTP International Conference On Nuclear Physics in LHC Era
  • Place of Presentation: Luxor, Egypt
  • Year and Date: 2009-11-19
• [Presentation] Neutrino-less double beta decay of ^<48>Ca studied by CaF_2 Scintillator (2009)
  • Author(s): Saori Umehara
  • Organizer: CTP International Conference On Nuclear Physics in LHCEra
  • Place of Presentation: Luxor, Egypt
  • Year and Date: 2009-11-19
• [Presentation] Study of Double Beta Decay of 48Ca with CANDLES (2009)
  • Author(s): Saori Umehara
  • Organizer: The 7^<th> Japan-China Joint Nuclear Physics Symposium
  • Place of Presentation: Univ. of Tsukuba, Ibaraki
  • Year and Date: 2009-11-12
• [Presentation] Study of Double Beta Decay of ^<48>Ca with CANDLES (2009)
  • Author(s): Saori Umehara
  • Organizer: The 7^<th> Japan-China Joint Nuclear Physics Symposium
  • Place of Presentation: Univ. of Tsukuba Ibaraki
  • Year and Date: 2009-11-12
• [Remarks]
  • URL: http://wwwkm.phys.sci.osaka-u.ac.jp/index-j.html