Demonstration of Cobalt Activity
Stage, camera holder, source holder, cobalt-60, Minipix-EDU
- Launch the Pixet Basic software and modify settings to the following:
- Min Level: 0
- Max Level: 50
- Measurement Mode: Tracking
- Frames: 100
- Exposure: 1 s
- Sum: uncheck
- Color Map: Hot
- Mount the MiniPix EDU camera and the holder with cobalt on the stage.
- Keep the camera and the source approximately 2 cm away and click on the play button.
- We observe a combination of beta and gamma radiation as shown in figure 1.
Figure 1. The tracks of beta and gamma radiation from Co-60 after 100 seconds of exposure
- In rare cases, sometimes the background radiation might result in some alpha particles.
- The beta particles, as discussed earlier, have a range of energy from a few keV to hundreds of keV.
- The energy of small tracks of gamma particles usually does not exceed 20 keV.