A)
- The Geiger Muller tube works on the same principle as the spark counter: an ionisation between two high voltage electrodes produces a pulse of current (an avalanche of charge) between the electrodes.
- Geiger Muller tubes are very delicate, especially if they are designed to measure alpha particles. The thin, mica window allows alpha particles to enter the chamber. It needs a protective cover to prevent it from being accidentally damaged by being touched.
- A good alpha detecting Geiger Muller tube will also count photons. If you light a match in front of it, a few ultra violet photons will be detected.
B)
- It is a gaseous ionization detector and uses the Townsend avalanche phenomenon to produce an easily detectable electronic pulse from as little as a single ionizing event due to a radiation particle. It is used for the detection of gamma radiation, X-rays, and alpha and beta particles. It can also be adapted to detect neutrons.
- The tube operates in the "Geiger" region of ion pair generation. This is shown on the accompanying plot for gaseous detectors showing ion current against applied voltage.
- While it is a robust and inexpensive detector, the GM is unable to measure high radiation rates efficiently, has a finite life in high radiation areas and cannot measure incident radiation energy, so no spectral information can be generated and there is no discrimination between radiation types; such as between alpha and beta particles.
C)
Kilobecquerel (KBq) is a a SI-multiple of a derived metric measurement unit of radioactivity.
On below way the unit is Defined .
conversions tables :-
- 1 kBq = 1 000 BqkBq>BqBq>kBq
- 1 kBq = 0.001 MBqkBq>MBqMBq>kBq
- 1 kBq = 1.0×10-6 GBqkBq>GBqGBq>kBq
- 1 kBq = 1.0×10-9 TBqkBq>TBqTBq>kBq
- 1 kBq = 1.0×10-12 PBqkBq>PBqPBq>kBq
- 1 kBq = 0.027 µCikBq>µCiµCi>kBq
- 1 kBq = 2.7×10-8 CikBq>CiCi>kBq
Explanation:
Hope this helps you !!
