Berthold Technologies GmbH & Co.KG
Berthold - Model LB 790 / LB 761 -Alpha Beta Low Level Counter
The 10-Channel Low-Level Counter LB 790 allows simultaneous and separate measurements of low activities for alpha and beta radiation emitting radionuclides with a detection limit of approx. 12 mBq for Alpha (Am-241) and approx. 22 mBq for Beta (Sr-90). The measuring system LB 761 Alpha-Beta Low-Level Counter for 200 mm Planchets allows the simultaneous measurement of alpha- and Beta- activity of a sample in two separate measuring channels. The background count-rates of the system LB 761 are extraordinarily low, so that good detection limits can be achieved.
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General
- Detectors and sample slides form one unit
- User-friendly PC software AMS (Activity measurement system for measurement and data acquisition)
- Service-friendly with regard to maintenance and repair
- Guard counter above the measuring counter for suppression of cosmic radiation (anticoincidence)
PC Software: AMS
- Parallel connection of several detector systems simultaneously (up to 4 systems)
- Automatic background subtraction
- Automatic half-life correction
- Live display of the detected activities and cpm values
- Stored measurements can be displayed on the monitor and evaluated at any time
- Data analysis with comprehensive graphics commands
- LB 790: Simultaneous α- and β-measurement (10-fold sample slide for measuring planchets up to Ø 60 mm)
- LB 761: Simultaneous α- and β-measurement (1-fold sample slide for measuring planchets up to Ø 200 mm)
- Modular detector pairs (2 detectors per module)
- Very low background guaranteed by 10 cm lead shielding on all sides