gdj Flashcards

1
Q

two main categories of radiation

A

natural environment and man made radiation

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2
Q

used in x ray imaging, least familliar forms of energy

A

electromagnetic energy

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3
Q

enough energy to move, enough electron from atom

A

non ionizing radiation

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4
Q

‘interacts’ called?

A

IONIZATION

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5
Q

Has been irradiated and becomes a source of radiation

A

contamination

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6
Q

matter that has been intercepts radiation and absorb part or all of it

A

irradiation

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7
Q

removing an orbital electron from atom

A

ionizing radiation

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8
Q

type of energy originates from source and flow through matter and space

A

radiation

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9
Q

electromagnetic radiation emitted by sun and stars

A

cosmic rays

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10
Q

emitted from deposit of radioactive

A

terrestrial radiation

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11
Q

largest source of natural environmental radiation

A

radon

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12
Q

estimated in ncpr in what year

A

2006

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13
Q

constitute largest man made source

A

3.2mSv per year

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14
Q

deposition on the surface of-the earth of radioactive particles

A

radioactive fall out

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15
Q

contributes very little to research application and radiation dose

A

nuclear power plant

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16
Q

natural environment radiation result i annual dose of?

17
Q

currently accepted annual dose in medical applications of ionizing is?

18
Q

unit of effective dose

19
Q

unit of air kerma

A

Gya or R OR j/kg

20
Q

unit of absorbed dose

A

Gyt or rad

21
Q

antoine henry bequerel what yr?

22
Q

emission of particles and energy in order to become stable

A

radioactivity

23
Q

unit of quantity of radioactive material

24
Q

common-quantities of radioactive material

25
occupational exposed person or population exposed
effective dose
26
symbol of centi
e
27
part of human metabolism
potassium k-40
28
deposited in trees and human
carbon 14
29
3 types of radiation
ionizing and non ionizing r electromagnetic spectrum types of ionizing radiation
30
natural sources of ionizing radiation include radiation n the environment
natural environmental/ background radiation
31
kinetic energy transferred from photons to electrons during ionization and excitation
air kerma