Electron Target Interactions

Question 1

3 Electron Target Interactions

Answer 1

1. Anode heat
2. Bremsstrahlung
3. Characteristic x-ray

Question 2

Acceelerated electrons

Answer 2

Projectile electron

Question 3

ANODE HEAT

Projectile electrons interact with (1) of the target atom but do not transfer (2) to (3) them.

Answer 3

1. outher shell electrons
2. sufficient energy
3. ionize

Question 4

ANODE HEAT

Outer shell electrons are raised to — or higher energy levels

Answer 4

excited

Question 5

ANODE HEAT

Outer shells electrons immediately (1) to their normal (2) with the emission of (3)

Answer 5

1. drop back
2. energy level
3. infrared radiation

Question 6

ANODE HEAT

Projectile electron may interact to another —

Answer 6

orbital electron

Question 7

ANODE HEAT

— = Heat generated in the anode

Answer 7

Constant excitation

Question 8

ANODE HEAT

Approximately (1) of the (2) of the projectile electron is converted to heat

Answer 8

1. 99%
2. kinetic energy

Question 9

CHARACTERISTIC X-RAY

Projectile electrons interact with (1) of the target atom and has (2) for (3)

Answer 9

1. inner shell electrons
2. sufficient energy
3. ionization

Question 10

Removal of electron

Answer 10

Ionization

Question 11

CHARACTERISTIC X-RAY

Temporary — is produced

Answer 11

electron void

Question 12

CHARACTERISTIC X-RAY

What term is it when the outer shell eelectron fills the void?

Answer 12

Electron cascading/ Transition

Question 13

CHARACTERISTIC X-RAY

— causes the production of characteristic x-rays

Answer 13

Orbital electron transition

Question 14

CHARACTERISTIC X-RAY

Only (1) of (2) are useful in imaging

Answer 14

1. K-characteristic x-rays
2. tungsten

Question 15

CHARACTERISTIC X-RAY

Characteristic x-rays have precisely fixed (1) and form a discrete (2)

Answer 15

1. energies
2. emission spectrum

Question 16

Point of interaction of Heat and X-rays

Answer 16

Heat: Outer shell electron
Charaxteristic radiation: Inner shell electron
Bremsstrahlung Radiation: Nuclear force field

Question 17

A device that permits the flow of current

Answer 17

Exposure hand switch

Question 18

Differentiate the two types of exposur ehand switch

Answer 18

Rotor switch: supplies current to both sides of the x-ray tube, and only needs to be half pressed.

Exposure switch: Supplies electron to produce x-ray and needs to be fully pressed.