Low background α, β meter

Main technical indicators

The 2πβ detection efficiency ratio of the instrument for 90Sr-90γ source is ≥ 55%, and the 2πα efficiency ratio for 239Pu source is ≥ 82%;

Beta background ≤ 0.15cm^-2min^-1, α background ≤ 0.002cm^-2min^-1;

α/β crossover performance: α→β<2%;β→α<0.5%;

Sensitivity: α = 5 × 10-4Bq, β = 0.5 × 10-3Bq;

Long-term stability

Efficiency stability: with continuous power for 24 hours, the detector efficiency change α is less than <3%,β<5%;

Background technical changes in the 32-hour measurement time are consistent with statistical laws.

The background stability: In the measurement time of 24 hours, the background count change should be within the range of (Nb ± 3o), where Nb is the average of the background count and o is the standard error of the local count.

Product Features

Using program-controlled high-voltage technology: the α threshold, β low threshold (βL), β high threshold (βH) and high voltage of the detector can be adjusted by computer according to requirements.

High degree of automation: the computer automatically controls the whole process of measurement, automatically processes data, and can print results and original data. The lead room has a novel structure. The innovative lead room structure design makes the distance between the coincidence detector and the main detector small, the anti-coincidence efficiency is higher, and the background is lower.

Innovative design of the whole cabinet: the equipment adopts the integrated design of the whole cabinet, which makes the measurement system difficult to integrate, occupies a small space and is easier to operate.

The use of special industrial-grade computers to ensure stable and reliable long-term continuous operation of the system.

Long-term stability and good repeatability of the instrument

Conditions of use

Ambient temperature:-35°C-55°C

Relative humidity: 95%

Power: AC 220V/50Hz power is not more than 20W

Weight