Production Of X-rays

Question 1

General properties of x-rays (7)

Answer 1

Shorter wavelength than light waves
Can penetrate more deeply
Able to pass through vacuum
Travel in straight lines
Interact w/matter through absorption or scatter
Fluorescent
Darkening effect on film

Question 2

Type of radiation

Answer 2

Electromagnetic

Question 3

Brief description of how x-rays produced

Answer 3

When electrons travelling at high speeds strike matter
Collide with other atoms & lose their kinetic energy
Transformed into heat (99%) and x-rays (1%)

Question 4

Define thermionic emission

Answer 4

Applied heat energy causes atoms to vibrate
Binding energy of atoms breaks down
Free electrons released

Question 5

How does thermionic emission occur

Answer 5

When current applied to filament causing it to heat up and release electrons

Question 6

Define electron transmission

Answer 6

When high voltage applied across cathode and anode

Electrons accelerated across vacuum toward target

Question 7

What does voltage affect (3)

Answer 7

Speed of electrons
Energy of produced x-rays
Penetrative power of x-rays

Question 8

What does current affect (2)

Answer 8

Number of electrons released

Number of x-rays produced