IMAGE RECEPTORS HIGH YIELD

Question 1

what are the color interactions with film?

Answer 1

black
gray
clear

Question 2

what are the properties of film?

Answer 2

cross section has components
single or double sided
sensitive to radiation and light
latent image
manifest image

Question 3

what are the cross section components of the film?

Answer 3

supercoat
emulsion
adhesive layer
film base

Question 4

what are the important properties of silver halide grains/crystals (found in the emulsion layer and interacts with x-ray photons)

Answer 4

structure
photons
sensitivity speck
processing

Question 5

what is the density of the silver halide grains/crystals?

Answer 5

10^9 grains/cm^3

Question 6

what is the silver halide grain comprised of ?

Answer 6

Ag+ or Br-

halides are either bromine or iodine

Question 7

how do the photons interact with silver-halide grains/crystals?

Answer 7

photon hits halide (Br-)

silver halide electron is kicked off (Br- to Br^0)

electron goes to find a positive silver ion so Ag is reduced

*black on film-metallic silver

Question 8

what is the surface charge of the sensitivity speck?

Answer 8

negative surface charge

Question 9

what are the irradiated areas of the sensitivity speck?

Answer 9

drops the halide and turns into metallic silver

Question 10

what are the non-irradiated areas of the sensitivity speck?

Answer 10

stays in crystalline silver bromide structure

Question 11

what is unique about the catalytic reaction of the processing portion by the silver halide grains? what is the catalytic reaction?

Answer 11

time sensitive

eventually all crystals will turn black or become reduced but the radiated crystals of the sensitivity speck will be the first to turn black