● Instrument

Department of Radiochemistry analysis has a radiochemical analysis laboratory, equipped with analytical instruments, such as TDCR liquid scintillation counter, ultra-low background liquid scintillation counter, alpha spectrometer, portable X-Ray fluorescence instrument, as well as sample pre-treatment equipment.

● Technique and Application

  ◎ Method of determination for ⁵⁵Fe、⁶³Ni和⁹⁰Sr in Nuclear power waste (liquid effluent, waste resin, waste engine oil)

  ※ Sample throughput: 8 samples per batch in 3 hours;

  ※ Minimum detectable activity: ⁵⁵Fe：0.084 Bq；⁶³Ni：0.164 Bq；⁹⁰Sr：0.06 Bq；

 ◎ Rapid screening method for³²P and⁹⁰Y in Biological samples (blood and urine samples)

  ※ Sample throughput: no need of radiochemical separation, 40 samples per batch in 3 hours;

  ※ Minimum detectable activity:³²P：0.055 Bq；⁹⁰Y：0.3 Bq

  ◎ Method of determination for²¹⁰Po and²¹⁰Pb in environmental samples

  ※ Sample throughput:²¹⁰Po micro-precipitation, 24 samples per batch in 5 hours; ²¹⁰Pb： four 5 L-drink water samples per batch in four hours;

  ※ Minimum detectable activity：0.08 Bq；

 ◎ Method of radionuclide identification and radionuclide purity of ¹⁴C in urea[¹⁴C] capsules

  ※ Meet the quality requirements of National Medical Products Administration on urea [¹⁴C] capsules

 ◎ Organic scintillation material

    ※ Domestic liquid scintillation cocktail

    ※ plastic scintillation microspheres

◎ Raining of radionuclides analysis technique

2、Accelerator Mass Spectrometry Application Laboratory

The accelerator mass spectrometry (AMS) application laboratory is equipped with 0.35 MV multi-isotope low energy AMS (MILEA), multi-quadrupole inductively coupled plasma mass spectrometry (ICP-QQQ), alpha spectrometry and liquid scintillation counter (LSC), etc. Multiple ultra-sensitive analysis technologies of α and β radionuclides (actinides, C-14, I-129, Tc-99, Cs-135, Sr-90, etc.) in various biological and environmental samples have been developed, and has reached the world"s advanced level. The laboratory aims to develop and provide highly sensitive analytical technologies for the research applications in the fields of biomedical science, environmental science, radiation protection, nuclear science and other interdisciplinary hot spots and frontier problems, so as to promote the integration and development of multi-disciplines.

MILEA introduction

MILEA combines the technology of accelerator and ion source of MICADAS (dedicated C-14-AMS dedicated instrument) and the high-energy mass spectrometer technology of ETH 600kV TANDY, which can be used for the ultra-sensitive analysis of natural long-life radionuclides (Be-10, C-14, Al-26, Ca-41, I-129), U-236, Pu, Np, Am, Cm, Cf and other heavy radionuclides.

ICP-QQQ introduction

The PerkinElmer NexION 5000 multi-quadrupole ICP-MS is innovatively designed to meet the demanding requirements of ultra-trace elemental applications. It provides the best ion beam control within this instrument class and is capable of suppressing and eliminating spectral interferences in complex samples, ensuring the best background counts in both hot and cold plasma conditions and outstanding detection limits.

3、Nuclear Detection and Imaging Application Laboratory

The Nuclear Detection and Imaging Application Laboratory (NDIAL) focuses on high-resolution imaging detection technology and application. The main research directions include the development of structured cold neutron imaging detectors, 3D dose distribution measuring technique for radiation therapy and other directions.

Our laboratory is committed to the improvement of neutron nondestructive testing technology. Micro-structure cold neutron sensitive scintillation screens and imaging detector were developed based on special glass research and development facilities. The cold neutron imaging detector based on Gadolinium scintillation fiber array achieves a spatial resolution of 14.5μm (CTF=0.5) and a detection efficiency of 55%, reaching the international advanced level.

The laboratory aims at the accurate dose verification in the radiation therapy, and independently developed a tissue-equivalent scintillation material with a γ soft tissue equivalence of 5% and its light yield reached 80% of Hisafe. Real time, 3D Dose distribution measuring technique for radiation therapy are in research and development.

4、Intelligent Radiation Protection Laboratory

The Intelligent Radiation Protection Laboratory works to provide the integrated radiation protection solution in the age of AI by merging intelligent algorithms with radiation dosimetry, ALARA practice, medical physics, and electronics radiation effects.

● Research Interests

Intelligent radiation protection: By combining intelligent algorithms with gamma-ray spectrum measurements and radiation protection data analysis, currently, we focus on the 4D external dose evaluation, fast analysis of gamma-ray spectrum, nuclear facility data mining, autonomous decision making system, and chromosomal abnormality diagnosis.

◎Electronics radiation effects: To meet the demand of nuclear intelligent equipment development, currently, we focus on the radiation hardened design of motor driver and industrial camera, radiation effects on novel semiconductors, and the radiation reliability analysis of the complex system.

◎Medical physics: To meet the demand of precise dose control and dose validation in radiotherapy, currently, we focus on ultra-high dose rate radiotherapy, CT dose evaluation, TAT dose distribution, and TPS optimization.

● Application

◎Real-time 4D personnel external dose monitoring system: We propose a novel real-time personnel external dose monitoring technology by the integration of motion capture and GPU-accelerated Monte-Carlo simulation.

◎ Big data visualization system: We provide a big data visualization and online interactive analysis platform based on the OLAP technology. Such platform has been applied in several NPPs.

◎ Radiation testing of EEE parts: We provide terrestrial radiation testing services which include test samples preparation, program and test board development, the TID and SEU testing as well as results reporting.

◎ EEE parts radiation database: A database of electronic components radiation testing results, covering 10 major types of devices, the total ionizing dose effects reports, the single event effect reports, and the displacement damage reports.