초록 ▼

<의료방사선 측정표준 개발>
- 선형가속기 고에너지 엑스선 국가표준 (6, 8, 10, 15, 25 MV) 확립
- 진단방사선(IEC 빔) 측정표준 개발
- 유방촬영엑스선 물흡수선량 절대측정
- CT 이미지 CRM 개발

<방사능 측정표준 확립 및 측정기술 개발>
- 베타+/전자포획/베타- 혼합붕괴 디지털 동시계수방법개발 (⁶⁴Cu)
- 난분석 핵종 방사능표준 기술 개발
- 4π γ계수법 개발 (¹³⁷Cs)
- 감마선트랙킹 신호분해 기술개발

<의료방사선 측정표준 개발>
- 선형가속기 고에너지 엑스선 국가표준 (6, 8, 10, 15, 25 MV) 확립
- 진단방사선(IEC 빔) 측정표준 개발
- 유방촬영엑스선 물흡수선량 절대측정
- CT 이미지 CRM 개발

<방사능 측정표준 확립 및 측정기술 개발>
- 베타+/전자포획/베타- 혼합붕괴 디지털 동시계수방법개발 (⁶⁴Cu)
- 난분석 핵종 방사능표준 기술 개발
- 4π γ계수법 개발 (¹³⁷Cs)
- 감마선트랙킹 신호분해 기술개발
- 에어본방사능 측정표준 확립
- 대기낙진 중 저준위 Cs 동위원소 측정기술 개발 및 감시
- 원전 해체 대비 콘크리트 중 ³H 측정기술 개발/확립
- 환경/식품 방사능 분석기관 숙련도 시험

<중성자 측정 표준 확립 및 측정 기술 개발>
- 열중성자 표준장 확립: 골드 포일 방사능 절대 측정법 개발
- 단색 중성자 플루언스 측정 기술 개발: 2.5 MeV 중성자 에너지 측정 기술 개발
- 중성자 방출률 측정범위 확장: 미니 망간용액조를 이용한 중성자 방출률 측정
- 국제비교 : 중성자 개인선량당량 교정 능력 국제비교 주관 / 중성자 방출률 측정 참여

(출처:보고서 요약서 3p)

Abstract ▼

Ⅳ. Results

< Medical Ionizing Radiation >
◦International comparison of the absorbed dose to water for radiation therapy
－ Absolute measurement of the absorbed dose to water for LINAC high-energy x-ray beams
－ International comparison with NMIJ by comparing the on-site calibration coe

Ⅳ. Results

< Medical Ionizing Radiation >
◦International comparison of the absorbed dose to water for radiation therapy
－ Absolute measurement of the absorbed dose to water for LINAC high-energy x-ray beams
－ International comparison with NMIJ by comparing the on-site calibration coefficients N_D,W of the transfer chambers
◦Absolute measurement of mammography x-ray
－ Absolute measurement of absorbed dose to water based on ionometry
－ Evaluation of the conversion factor, air kerma-to-water absorbed dose by means of Monte Carlo simulation and Absolute measurement of absorbed dose to water
◦Establishment of measurement standards of absorbed dose to water for LINAC high-energy x-ray (8 MV, 15 MV, 25 MV)
－ Set-up and characterization of LINAC high-energy x-ray beams with energies of 8 MV, 15 MV and 25 MV
－ Absolute measurement of absorbed dose to water using the graphite calorimeter
- Evaluation of the calibration coefficients, N_D,W of the transfer chambers
◦Establishment of measurement standards for the diagnostic x-rays
－ Set-up and characterization of diagnostic x-ray beams (IEC RQR series)
－ Evaluation of FAC correction factors by means of Monte Carlo simuation
◦ Development of CT image CRM
－ Monte Carlo modelling of the KRISS PET/CT x-ray tube
－ Development of absolute mesurement techique of CT image measurement quantity (Hounsfield, H)

< Radioactivity >
－ The digital DAQ and the fitting algorithm of the segmented HPGe system has been developed and the reconstructed interaction position is estimated to be 3 mm resolution
－ Digital coincidence TDCR methode for the DTM isotope and the extended standard uncertainty is obtained as 1 % for the ⁶⁴Cu. The new algorithm of the coincidence measurement was developed for the delayed decay isotope
－ The length compensated proportional counter has been developed and the estimated standard uncertainty is 2.44% in the pilot experiment with the ⁸⁵Kr gas.
－ Monitoring of radioactivity discharged from Fukushima’s accident - ¹³⁷Cs concentration in the dry deposition
－ Development/establishment of ³H measurement technology in the concrete materials produced by nuclear power plant dismantling
－ A total of 26-30 domestic radioactivity labs attended proficiency testing
－ Presentation of proficiency test results and issuance of test report

< Neutron >
◦Establishment of the thermal neutron standard
－ Development of neutron response calibration technology for thermal neutron
－ Development of absolute Gold foil measurement technology
◦Development of mono-energy neutron fluence measurement technology
－ Development of 2.5 MeV neutron energy measurement technology
－ DD109 mono-energy neutron energy determination: (2.42 ± 0.03) MeV
◦Expansion of measurement range of neutron emission rate
－ Final specification determination and production of mini manganese bath
－ Measurement of neutron emission rate using mini manganese bath
◦Expansion of measurement range of neutron emission rate
－ International comparison method of neutron perosnal dose equivalent meters and evaluation of stability of the device
－ Pilot of neutron personal dose equivalent calibration for international comparison

(출처:SUMMARY 10p)

목차 Contents

• 표지 ... 1
• 제 출 문 ... 2
• 보고서 요약서 ... 3
• 요 약 문 ... 4
• SUMMARY ... 9
• CONTENTS ... 14
• 목차 ... 15
• 제1장 연구개발과제의 개요 ... 16
• 제1절 의료방사선 측정표준 ... 16
• 제2절 방사능 측정표준 ... 18
• 제3절 중성자 측정표준 ... 20
• 제2장 국내외 기술개발 현황 ... 22
• 제1절 의료방사선 측정표준 개발현황 ... 22
• 제2절 방사능 측정표준 개발현황 ... 25
• 제3절 중성자 측정표준 개발현황 ... 26
• 제3장 연구개발수행 내용 및 결과 ... 30
• 제1절 의료방사선 측정표준 개발 ... 30
• 제2절 방사능 측정표준 확립 및 측정기술 개발 ... 77
• 제3절 중성자 측정표준 확립 및 측정기술 개발 ... 137
• 제4장 목표달성도 및 관련분야에의 기여도 ... 167
• 제5장 연구개발결과의 활용계획 ... 174
• 제6장 연구개발과정에서 수집한 해외과학기술정보 ... 176
• 제7장 참고문헌 ... 177
• 끝페이지 ... 179