What is the primary interaction of electrons with matter?

• Absorption

• Refraction

• Reflection

• Excitation

What occurs during excitation of an atom by an electron?

• The atom absorbs a photon

• The atom's electrons jump to a higher energy level

• The atom is ionized

• An electron is ejected from the atom

What is ionization?

• The scattering of photons

• The process of raising an atom to an excited state

• The ejection of an electron from an atom

• The absorption of energy by an atom

What does Linear Energy Transfer (LET) measure?

• The speed of electrons

• The thickness of materials

• The energy loss rate of electrons in a medium

• The intensity of radiation

Which type of radiation has a high LET?

• X-rays

• Gamma rays

• Alpha particles

• Beta particles

What is Bremsstrahlung radiation?

• Radiation absorbed by matter

• Radiation emitted during ionization

• Radiation produced by decelerating electrons

• Radiation from thermal energy

Characteristic radiation is produced when:

• An electron is ejected and another fills the vacancy

• High-energy photons collide with nuclei

• Electrons scatter elastically

• Photons are absorbed completely

What does attenuation refer to in radiation?

• The increase in radiation intensity

• The emission of radiation

• The reduction in radiation intensity

• The scattering of radiation

What is the Half-Value Layer (HVL)?

• The thickness of material to reduce intensity by half

• The distance radiation travels in air

• The maximum energy of radiation

• The minimum energy required for ionization

What is Thompson scattering?

• Elastic scattering of low-energy photons

• Inelastic scattering of high-energy photons

• Absorption of photons by electrons

• Emission of radiation from nuclei