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RADPRO | Radiation Quantities and Units > Radiation Quantities and Units > Flashcards

Radiation Quantities and Units Flashcards

1
Q

Used to describe a beam of radiation

A

Radiation Quantities

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2
Q

Radiation fall into two general categories:

A

Radiation Exposure
Radiation Dose

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3
Q

Radiation travelling through air
Total radiation delivered to a body

A

Radiation Exposure

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4
Q

Radiation travelling through a medium
Concentration of radiation at some point or to a specific tissue or organ

A

Radiation Dose

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5
Q

a measure of the amount of radiation, and therefore measures a radiation beam.

A

Radiation quantities

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6
Q

Radiation quantities can be categorized into 2:

A

Radiation exposure and radiation dose

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7
Q

which is a measure of the radiation that emanates from the source and delivered to a specific target. It is therefore usually measured in
air

A

Radiation exposure

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8
Q

which is a measure of the concentration of radiation at a given point in matter.

A

Radiation dose

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9
Q

It is a measure of the amount of radiation when the radiation interacts in a medium.

A

Radiation dose

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10
Q

The removal of an orbital electron from an atom.

A

Ionization

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11
Q

Produces an ion pair

A

Negatively charged electron and Positively charged ion (atom minus 1 electron)

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12
Q

causes the deposition of energy to the interacting medium.

A

The removal of electron from an atom

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13
Q

usually transferred to the ejected electron, and will eventually be absorb by the medium as the recoil electron undergoes a series of interaction and eventually come to rest.

A

the energy of the incident radiation

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14
Q

A form of radiation with sufficient energy to excite and or ionize atoms.

A

Ionizing Radiation

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15
Q

Ionizing radiation particles

A

•Gamma rays,
X-rays,
heavy charged particles,
•neutrons,
and beta particles are examples of ionizing radiation.

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16
Q

Not all radiation are capable of ionization. Radiations that are capable of ionization are also called

A

Ionizing radiation

17
Q

the electromagnetic radiation, high frequency ultraviolet radiation, x-rays and gamma rays are

A

ionizing radiation

18
Q

Ionizing radiation is divided into two categories:

A

Directly Ionizing and Indirectly Ionizing

19
Q

Directly ionizing

A

Alpha and beta

20
Q

Indirectly Ionizing

A

photons and neutrons

21
Q

includes all charged particles.
These particles interact with electrons through long-range Coulombic charged-particle interactions and deliver energy to matter directly.

A

Directly ionizing radiation

22
Q

•includes x-rays, gamma rays, and all uncharged particles. They will typically interact via a transfer of energy to a single charged particle, and it is the secondary charged particle that delivers energy to the absorbing material.

A

Indirectly ionizing radiation

23
Q

unit of exposure

A

x

24
Q

unit of absorbed dose

A

D

25
Q

Unit of equivalent dose

A

H

26
Q

Unit of Activity

A

A

27
Q

It is the measure of ionization produced in air by photons.

A

Exposure

28
Q

It is a quantity of charge released during the ionization of air by passage of radiation under strictly defined conditions.

A

Exposure

29
Q

the measure of radiation that emanates from the source.

A

Exposure

30
Q

measured using ionization chamber.

A

Exposure

31
Q

Exposure is divided into two:

A

Primary standard instrument
Secondary instrument

32
Q

Free air ionization chamber

A

Primary standard instrument

33
Q

Instruments designed for field use such as the Victoreen R meter.

A

Secondary instrument

34
Q

therefore created to produce the conditions necessary to measure radiation exposure. It is through the use of ionization chamber.

A

Device

35
Q

It is the instrument employed in the measurement of the exposure according to the definition of Roentgen (old unit of exposure).

A

Free Air Ionization Chamber

36
Q

the quantity of charge released during the ionization of air by passage of radiation under strictly defined conditions.

A

Roentgen

37
Q

It is generally used for calibration of secondary instruments designed for field use.

A

Free Air Ionization Chamber

38
Q

It is confined to some national standards laboratories.

A

Free Air Ionization Chamber

39
Q

the primary instrument, and is constructed based on the definition of Roentgen, which is the old unit of measure of exposure.

A

Free air ionization chamber

RADPRO | Radiation Quantities and Units (1 decks)

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