Industrial smoke detectors Industrial smoke detectors are si

Industrial smoke detectors. Industrial smoke detectors are similar to residential smoke detectors but usually contain a larger amount of radioactive substance to generate a higher saturation current. The amount of radioactive substance is usually written on the smoke detector and given in microcurie (mu Ci). An industrial smoke detector is rated as having 45 mu Ci of Am-241. The a particles emitted by Am-241 have an energy of 5.486 times 10^-6 eV. Calculate the saturation current in the chamber assuming 100% efficiency.

Solution

Ans: Smoker detector:

A photo electric smoke dectector or optical smoke detector:

Operation of smoke detectors:

Batteries:

In combination with berllium, Am-241 is also used as a neutron source in non-destructive testing of machinary and equipment, and a thickness guage in the glass industry. beryllium producess nwutrons as it captures the alpha particles from Amo2.