Nuclear Forensics Research in China - NTI · analysis. Some research institutes in China, such as...
Transcript of Nuclear Forensics Research in China - NTI · analysis. Some research institutes in China, such as...
RCD Department of Radiochemistry
The 13th PIIC Beijing Seminar on International Security:Building a World of Sustainable Peace and Stability
November 1-2, 2012 Beijing, China
Zhao Yonggang
Nuclear Forensics Research Nuclear Forensics Research in Chinain China
RCD Department of Radiochemistry
Main ContentMain Content
Foreword National Legal Requirements to R&D of Nuclear ForensicsTechnical Research on Nuclear Forensics in ChinaTechnical Application and ExchangeSummary
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ForewordForewordNPT plays an important role in preventing nuclear material and techniques from proliferation; Nuclear export control regimes are further strengthened globally;Nuclear material smugglings increased since
1990’s. Global securities are confronted with potential threat from nuclear terrorism.
RCD Department of Radiochemistry
Nuclear forensics is a measure for identification the origin of nuclear materials in illicit trafficking;It could also be used to reconstruct the nuclear device after a possible nuclear explosion.On the basis of ideal procedure of nuclear forensic investigation and attribution, the participators, the organizers and the supporters of the nuclear events could be found out theoretically.Nuclear forensics is deterrent measure for discouraging nuclear terrorism.
ForewordForeword
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National Legal Requirements to R&D of Nuclear National Legal Requirements to R&D of Nuclear ForensicsForensics
Regulations on Nuclear Export Control
Regulations on Nuclear Material control
The Trial Regulations on Transit of Nuclear Products
Regulations on Transportation Security of Radioactive Goods
Implementing Rules for Regulations on Nuclear Material Control
Medical Treatment Specifications for Radiation Injury
Regulations for the safe transport of radioactive material
Criminal law
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Police Office
Illicit trafficking
Nuclear material
Intercepted
C/S, protectioninvestigation
Technical section
On site analysis
Environmental protection section
Contamination, Dose measurementPublic psychological intervention
transit escort in licensedtransportation
. . .
sample
General Workflow of Investigation to Intercepted Nuclear Samples
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Safe and security section
Authorized Analytical Lab
Glove box
Sample receiving
Contamination 、Dose measurement
unpacking
Nuclear forensic
investigation
report
Police office
Illicittrafficking
criminalinvestigation
CAEA
Nuclear material
General Workflow of Investigation to Intercepted Nuclear Samples
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Technical Research on Nuclear Forensics in China
China has a good technical basis and long history on the research of radiological material analysis. Some research institutes in China, such as CIAE, CAEP, NINT…, have interests to develop nuclear forensic methodologies since 2000.
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Related WorksRelated Works
Numerical simulationMorphology of nuclear materialAge-dating of nuclear materialImpurities of uranium ore concentrateIsotopic compositionPreparation for National Nuclear Forensics Database
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0 5 10 15 20 25 30 35 40 45 500.00
0.05
0.10
0.15
0.20
0.25
燃耗(兆瓦天/公斤重金属)
154钆
/158钆
沸水堆(3.4%) 压水堆(3.4%) 沸水堆(4.2%) 压水堆(4.2%)
0 5 10 15 20 25 30 35 40 45 500.000
0.005
0.010
0.015
0.020
0.025
0.030
燃耗(兆瓦天/公斤重金属)
245锔
/242钚
沸水堆(3.4%) 沸水堆(3.4%) 沸水堆(4.2%) 压水堆(4.2%)
Numerical Simulation
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Fluorescence spectrometer
Atlas of morphological characteristics of uranium particles
Morphology of Nuclear Material
SEM
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Age-dating of Nuclear Material
Uranium age :
Plutonium age :
Method 234U/230Th 235U/231Pa 234U/214Bi
SD(>20year HEU) < 2.5% < 10% < 5%
241Am/241Pu :
240Pu/236U :
MC-ICP-MS, α Spectrometer, liquid scintillation spectrometer
MC-ICP-MS
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Impurities of Uranium Ore Concentrate
0
5000
10000
15000
20000
25000
30000
35000
Co La Nd Fe Hg Na Mg Al Ca Mo
Na2U2O7
U3O8
(NH4)2U2O7
ng/ml
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Isotopic composition
234U, 235U, 236U and 238UMC-ICP-MS, SIMS, TIMS
Uranium isotopic ratio:
Oxygen isotopic ratio:SIMS, TIMS
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Preparation for National Nuclear Forensics Database
Setting up of framework of nuclear forensicsdatabase;Collecting and cataloging the material and data; Establishing criteria and enhancing the capabilityDomestic exercise and analytical capability inter-comparison on nuclear forensics
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International Cooperation and
Technical Exchange
CISAC/CISGAC meetingIAEA’s technical consultancy meetingIAEA’s regional workshop on nuclear forensics
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Radiation level
Macrocosmic features
Isotopes
Microcosmic features
Impurities
Cylinder, Chamfer,Central Axial holeHeight 10.96mm
O.D. 7.56mmI.D. 2.36mm
Surface Smooth and Porosity
0.05 µSv/h
An intercepted samples
Case Study
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Radiation level
Macrocosmic features
Isotopes
Microcosmic features
Impurities
Case Study (Cont.)
An intercepted sample
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Qualitative Analysis of suspected Samples
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SummarySummary
Nuclear forensics should be based on national legal requirements;Nuclear forensic investigation is a complicated process where various methods could be applied;Establishment of database is a key step for implementation of nuclear forensics;Chinese researchers did a lot in nuclear forensics and like to promote the cooperation in the field.
RCD Department of Radiochemistry