Question

Q.1.4 Which of the following is not a type of gas filled detector?
A Proportional counter
B.G.M. counter
C. Semi conduct or detector
D. Ionization chamber​

Answer 1

Answer:

Flame emission detector is not a type of radiation detector.

Explanation:

,

Answer 2

C) Semiconductor detector is not a type of gas-filled detector.

Radiation Detector:

• They are instruments used to detect nuclear radiation, which can be in a variety of forms, such as electrons, protons, α - particles, x - rays, γ - rays, etc. They can be classified in several ways depending on the type of signals and ion collection.

Gas-filled Detectors:

• Gas-filled detectors are widely used detectors based on the principle of ionization and excitation of charged particles.
• Three detectors based on the same principle are ionization chamber, proportional counter, and G.M. counter. The working of the ionization chamber is based on the fact that charged subatomic particles can ionize a gas.

• Proportional and GM counters are devices to count particles of ionizing radiation and measure their energy. The difference being is that the operating voltage of the proportional counter is less than that of the GM counter.

Semiconductor Detectors:

• It is a reverse biased p-n junction diode in which ionization radiations produce electron-hole pairs collected by an applied electric field, giving an electric pulse. It is a solid-state version of the gaseous ionization chamber.

Radiation detectors detect nuclear radiations where ionization chamber, proportional counter, and G.M. counter are gas-filled detectors based on ionization and excitation, while semiconductor detector is a solid-state version of the ionization chamber.