Calibration of ion flow chambre

[Milentije]

I need to calibrate ion flow chambre,dont know exactly how.
I don't know also how to relate Bq/m3 to doserate mSv/h.
Are there any doserate limits,instructions suggest that there are.

 

[daveb]

Instruction for calibration of any radiation survey instrument can't really be done on the internet, since it requres some kind of source to calibrate the instrument with (typically, a Cs-137 sealed source or other long-lived nuclide). This requires training commensurate with the hazards associated with handling such material. As for conversion of Activity per unit volume to dose rate, that all depends on the nuclide in question. The higher the energy of the radiation, the greater the dose rate (given the same activity). If you want to learn more, you might want to google search "gamma constant" or "exposure constant".

 

[raining Pete]

Hi there,

Calibrating an ion flow chamber can be a bit tricky, but here are some steps you can follow:

1. First, make sure that the chamber is clean and free from any debris. This can affect the accuracy of your readings.

2. Next, you will need to use a known source of radiation to calibrate the chamber. This can be a radioactive isotope or a calibrated radiation source. Make sure to follow all safety protocols when handling radioactive materials.

3. Set the source at a known distance from the chamber and turn it on. Make sure the source is stable and the readings on the chamber are consistent.

4. Use a calibration factor to convert the readings from the chamber into units of radiation, such as mSv/h.

As for relating Bq/m3 to doserate mSv/h, it will depend on the type of radiation and the specific conversion factor for that type of radiation. You can usually find this information in the instruction manual for your ion flow chamber.

And yes, there are definitely doserate limits that you should be aware of. These limits are set by regulatory agencies and can vary depending on the type of radiation and the specific application. Make sure to follow all instructions and safety guidelines when working with ion flow chambers.

I hope this helps! Good luck with your calibration.