RAD 106 midterms

Question 1

high mass and can be stopped by a thin sheet of paper

Answer 1

alpha particles

Question 2

is the radiation of energy by means of fast moving sub atomic particles that has finite mass and may or may not carry a charge

Answer 2

particulate radiation

Question 3

steeper anode angle, creates a smaller effective focal spot size

Answer 3

line focus principle

Question 4

can store the absorbed light energy

Answer 4

phosphorescence

Question 5

relationship between wavelength and frequency

Answer 5

inversely proportional

Question 6

releasing of electron from the filament when current flows
the hotter the filament the greater the number of electrons

Answer 6

thermionic emission

Question 7

number of oscillations
measured in hertz

Answer 7

frequency

Question 8

represents average energy per unit path

Answer 8

linear energy transfer
kev/um

Question 9

means radiation emanating from the diagnostic source assembly except for

Answer 9

leakage radiation

Question 10

is energy that moves from one place to another in a form that can be described as waves/ particles

Answer 10

Radiation

Question 11

photons emitted towards the tube’s anode side are attenuated more than the cathode side

Answer 11

heel effect

Question 12

unstable atomic nucleus loses energy by radiation

Answer 12

radioactivity

Question 13

does not have enough energy to remove and electron from an atom/molecule

Answer 13

non ionizing radiation

Question 14

is a dose quantity representing the stochastic health effects of low levels of ionizing radn on the human body

Answer 14

equivalent dose

Question 15

atoms go to excited state/ excitation
high penetrating power
hazardous

Answer 15

gamma radiation

Question 17

adding or removing electrons in atoms or molecules

Answer 17

ionization

Question 18

number of protons + number of neurons

Answer 18

atomic mass Z

Question 19

capable of removing/adding of an electron from an atom

Answer 19

ionizing radiation

Question 20

emission of light by a substance that has absorbed light

Answer 20

fluorescence

Question 21

number of protons or number of electrons

Answer 21

atomic number A

Question 22

is defined as the same degree of biological effect irrespective of radn type

Answer 22

dose equivalent

Question 23

same atomic number, different atomic mass

Answer 23

isotopes

Question 24

removal of an electron from atom orbit

Answer 24

ionizing radiation

Question 25

dose can be defined as the amount of energy absorbed by any medium for any radn type

Answer 25

exposure medium

Question 26

a process by which a nucleus or other subatomic particles emits a smaller particle or divides into smaller particle

Answer 26

disintegrations

Question 27

rate at which the radn is emitted from a radioactive source

Answer 27

dose rate

Question 28

emission of ionizing radiation

Answer 28

radioactivity

Question 29

is what remains of the primary beam after it has been attenuated by matter

Answer 29

remnant radiation

Question 30

hydrogen has three known isotopes

Answer 30

protium, deuterium, tritium

Question 31

means radiation which passes through an aperture of the source housing by a direct path from the x-ray tube or a radioactive source located in the radiation source housing

Answer 31

primary beam

Question 32

xrays produced when high speed electron from the filament are slowed down as the pass close/strike the nuclei of target atom

Answer 32

bremsstrahlung xrays

Question 33

relationship between wavelength and energy

Answer 33

inversely propotional

Question 34

distance travelled by a wave denoted in lambda

Answer 34

wavelenght

Question 35

longer wavelength and lower energy characteristics

Answer 35

xrays

Question 36

provides an approximate indicator of potential detriment from ionizing radn

Answer 36

effective dose

Question 37

relationship between frequency and energy

Answer 37

directly proportional

Question 38

is defined as the amount of ionization in air produced

Answer 38

exposure in air

Question 39

a neuron-proton ratio, can be stopped by a thin aluminum/steel, it can penetrate skin

Answer 39

beta particles

Question 40

full range of electromagnetic radiation organized by frequency or wavelength

Answer 40

electromagnetic spectrum