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15 Cards in this Set
- Front
- Back
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Radiation intensity is ___________ related to the square of the distance from the source.
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Inversely
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The reason for the rapid decrease in intesity when the distance is increased is ______________
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The total photons emitted are spread out over an increasingly larger area
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The source of x-rays is
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The anode of the x-ray tube
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What is the measurement of the anode?
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0.3mm - 1.0mm
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When the distance is decreased, the
protons are “layered” on top of each other, which increases the intensity. |
The relationship is inverse:
Distance ↑, Intensity ↓, or Distance ↓, Intensity ↑ |
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The x-ray photon is a discrete bundle
_________ of energy. |
Quantum
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The energy of a photon is directly
proportional to its frequency and can be calculated using Planck’s Quantum Equation: |
E = hf, or f = E/h
E = the photon energy h = Planck’s constant f = the photon frequency in hertz |
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(h) = Planck’s constant:
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4.15 x 10(-15) eVs
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An extension of Planck’s equation is the relationship between photon energy and photon wavelength which is useful when computing equivalent wavelengths of x-rays
and other types of radiation. |
The Equivalent Planck’s Equation is:
E = hc/wavelength |
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The Equivalent Planck’s Equation is:
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E = hc/wavelength
E = Photon Energy h = Plank's Constanct c = speed of light = wavelength |
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Everything that is in existence can be classified as___________________
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Matter or energy
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Neither matter nor energy can be created or destroyed, but ???
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matter can be transformed into energy, and energy can be transformed into matter.
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Example of matter transformed into energy is _____
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Nuclear fission - basis for nuclear power plants
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Example of energy transformed into matter is called ______
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Pair production
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Pair production
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Where a huge amount of x-ray energy
is transformed into a positron or positive particle of matter. |
