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non-imaging devices

They are able to detect the type of radiation

Proportional counters:

Particulate radiations travel a shorter distance through matter than electromagnetic radiation because?

Particulate radiations have mass

What can you say about Gegier Muller counter?

They operate with a voltage higher than a dose calibrator, They are used to measure small amount of radioactivity, They use halogen gasses as the quenching gas.

A dose calibrator requires specific tests to be done periodically to make sure it's working properly. (Daily)

accuracy

Geometric dependence of a dose calibrator must be checked when?

At installation

Decay by electron capture (EC) is an alternative to?

Positron decay (Beta-Plus)

Decay by internal conversion (IC) is an alternative to the ?

Gamma- ray decay

The physical half-life of a radionuclide is the time it takes:

for the nuclide to decay to one half of the original activity.

Radioactive half life is the time?

required for radioactivity to reach one half of its original value.

A positively charged particle made up of two protons and two neutrons and released by a radioactive nucleus is called?

Alpha Particle

An electron released by a radioactive nucleus that causes a neutron to change into a proton is called?

Beta Particle

The amount of time for half the atoms in a radioactive sample to decay is called?

The half_life

The process in which the nuclei of unstable atoms can become more stable by emitting particles and/or electromagnetic radiation is called

radioactive Decay

High-energy electromagnetic radiation released by a radioactive nucleus are called

Gamma Ray

Aneutron in the nucleus decays into a proton, an electron, and an anti-neutrino is called a ?

Beta ray

What electromagnetic radiation can be stopped with a piece of paper?

Alpha particles

What electromagnetic radiation can be stopped with a thin metal sheet?

Beta particles

What electromagnetic radiation can be stopped with a thick metal sheet?

Gamma Ray

What electromagnetic radiation travel at the speed of light?

Gamma ray

What happens in a chain reaction?

Products that start a new reaction are released.

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