accessories-for-Gamma-sample-counting-system
Technical Data
GAMMA SCINTILLATION PROBE WITH STAND
This essentially consists of a 2? x 2? NaI Integral detector, with PMT / HV bleeder wired & enclosed in a cylindrical shell with appropriate connector brought out for applying HV bias to PMT & also for taking signal output to the Radiation Counting System. This probe with NaI crystal facing downwards is placed in a sample holder having slotted arrangement for placing sample tray. Samples either filter paper deposited air activity sample or in a SS planchet can be kept for gross gamma activity counting. This Radiation counting system cannot be used for selection of a specific energy band. For applications requiring counting for a specific energy band one has opt for Gamma ray spectrometer.
Specifications :
| Detector Material : | NaI Scintillator screen |
|---|---|
| Operating voltage: | 900 ? 1000V |
| Efficiency for cs-137(Typical) in contact : | 32% |
| Background (Typical) with 40mm lead shielding: | 15cps |
(ii) STAND FOR G.M. DETECTOR TYPE : SG 200
SS and aluminium planchets are required to place the prepared environmental samples for counting. These planchets are of 25mm dia & have a depth of 2mm. These are designed to fit into the sample / source holder / drawer of the detector assembly.
