Low Background Multi-channel γ- ray Spectrometer

Introduction

The instrument consists of a low background Na1 probe, a programmable integrated multi-channel analyzer, a computer, a lead chamber, and other equipment. It is mainly used for the identification and activity measurement of radioactive isotopes in y emitters. The system software and hardware configuration meets the requirements of the National Standard of the People's Republic of China GB6566-2010 "Limits for Radioactive Nuclides in Building Materials" and GB/T 14582-93 "Standard Measurement Methods for Radon in Environmental Air".

It can be widely used for qualitative and quantitative analysis of radioactive nuclides in materials such as granite, marble, cement, coal slag, food, sediment, and geological samples, measuring the types of nuclides and their radioactive or specific activity values; It can also be used for measuring solution samples, solid samples, and medium samples of different densities. Analyze the radioactive radon content indoors or in the environment using the activated carbon box method. After metrological standardization calibration, it can be applied

Product features

Using the Windows XP platform, suitable for desktop or laptop use:; External portable ADC/PHA/programmable amplifier/high-voltage integrated multi-channel analyzer; Computer controlled adjustment of amplification factor, window discrimination threshold, and detector high voltage; Equipped with analysis software packages and metrological calibration that comply with the national natural radiation limit standards for building materials;

Specifications

Energy resolution: ≤7.5% (137Cs);

Energy linearity: <±1% (50keV-3.OMeV);

System stability: <±1% (8h);

The maximum number of data storage channels: 4096 channels, each track counting capacity 224-1;

Data storage track groups: 512, 1024, 2048 and 4096;

Lead shielding chamber attenuation factor: ≥80 (50Kev-2.OMev) typical value <350cpm;

When the specific activity of 226Ra, 232Th and 40K in the sample is greater than 37Bq/kg, the analysis error is less than 20%