X Rays More

Question 1

How are X Rays produced?

Answer 1

When fast moving electrons are rapidly decelerated

Question 2

Explain how an X ray tube works?

Answer 2

Heated filament acts as a cathode and emits electrons
These are accelerated at a rotating metal tungsten target
When they hit it, they lose their KE in the form of photons
They then pass through a window which collimates the beam

Question 3

Define braking radiation?

Answer 3

X Ray’s produced when electrons are decelerated

Question 4

Define characteristic radiation?

Answer 4

Very intense X Ray’s produced in an X Ray tube having specific wavelengths that depend on the metal target

Question 5

Define intensity?

Answer 5

The power per unit cross sectional area

Question 6

What is attenuation?

Answer 6

The gradual decrease in the intensity of the beam of X Ray’s

Question 7

Explain why you get characteristic radiation?

Answer 7

A few electrons cause rearrangement of electrons in the anode atom, causing an electron to drop energy levels therefore emitting a photon of characteristic radiation