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x-ray interactions

rad phyics

QuestionAnswer
a photoelectron is matter, possesses energy, is capable of creating biological changes
almost all the kinetic energy of the incident electrons is converted to heat
an interaction that occurs between low energy x-ray photons and matter is called___ scatter coherent, classical, unmodified
as the angle of deflection is increased from 0 to 180 degrees greater energy is imparted to the recoil electron
as the electrons shell move farther from the nucleus, total electron energies___ and binding___ energies increase, decrease
at the end of the characteristic cascade, the ___shell is missing an electron outermost
brems interactions may occur only when the incident electron interacts with the force field of the nucleus
characteristic interactions may occur only when the incident electron interacts with an inner-shell electron
compton scattering occurs whrn an incident x-ray photon interacts with a___electron loosely bound outer-shell
during a characteristic interaction, the dropping of a higher-energy state electron into a lower-energy state "hole" results in the emission of a photon of energy
during a characteristic interaction, the energy of the incident electron must be___the elcrton it knocks from its orbit greater than that of
during coherent scattering, the scattered photon possesses___as the incident photon the same energy, the same frequency, and the same wavelength
during compton scattering, the incident photon energy is divided between the ejected electron and the scattered photon
during photoelectric absorption, an___ shell electron is ejected inner
during photoelectric absorption, the ejected electron is called a photoelectron
during the photoelectron interaction, as an electron transfers from an outer shell to a vacant inner shell, energy is released in the form of a characteristic photon
during the process of attenuation, the x-ray photon may interact with the nucleus, the entire atom, an orbital electron
during the process of attenuation, x-ray photons in the beam reduce in number, lose energy, interact
during which interaction with matter is the x-ray photon converted to matter in the form of two electrons pair production
if a photon interacts with matter and scatters, the photon exists with less energy
in the human body, ___is the predominant interaction through most of the diagnostic x-ray range compton scattering
in which element are inner-shell electrons more tightly bound to the nucleus lead(Z=82)
in which process is matter converted back to energy annihilation reaction
secondary radiation energies are highest for which element barium
the electron dislodged during compton scattering is called the recoil electron
the energy of a brems photon is the difference between the binding energy of the outer and inner shells between which the electron dropped
the K-shell can hold a max of ___electrons 2
a photon that exists the atom after a compton scattering is called the comptom scattered photon
the transfer of the incident electron's kinetic energy to the out-shell electrons causing vibration of the out-shell electron results in the emission of infrared radiation
the types of target interactions that occur in the production of diagnostic range x-ray photons are dependent upon electron kinetic energy
unwanted densities caused predominantly by scattered photons are called radiation fog
what percentage of target interaction results in the production of x-rays 1 percent
when an electron from an outer shell fills a vacancy in an inner shell more than one of the above
when an x-ray passes trough matter, it undergoes a process called attenuation
when an x-ray photon with a slightly greater energy than the binding energy of the inner-shell electron interacts with that inner-shell electron, the following interaction results photoelectron absorption
when x-ray photons interact with matter and change direction, the process is called scatter
which atomic shell possesses the highest binding energy K
which energy-level electrons possess the highest total energy N
which of the following interactions has a significant impact on the x-ray image photoelectric absorption
which of the following interactions has a significant impact on the x-ray image compton scattering
which of the following interactions with matter results in a radiograph with a long scale of contrast compton scattering
which of the following interactions with matter results in a radiograph with a short scale of contrast photoelectric interactions
a photoelectric interaction is more likely to occur when the x-ray photon energy and the electron binding energy are farther from one another false
a photoelectric interaction is more likely to occur with an electron that is loosely bound in its orbit than with an electron that is tightly bound false
as kVp increases, the percentage of compton interactions decreases false
as kVp increases, the total number of photons transmitted without interaction increases true
as the atomic number of an element increases, the energy required to remove an inner-shell electron decreases false
as the kinetic energy of the incident electron increases, so does the efficiency of the photon production true
during coherent scattering, the scatterd photon differs from the initial photon in direction true
during pair production, the negatively charged electron is termed a negatron true
during photoelectric interaction, the incient x-ray photon must be greater than the binding energy of the inner-shell electron true
in a brems interaction, the closer the incident electron travels to the nucleus, the lower the energy of the resultant x-ray photon false
in the diagnostic range, the kinetic energy of the incident electrons is high enough to eject an outer-shell electron causing ionization true
photodisintergration is extremely relevant in diagnostic imaging ranges false
some x-ray photons may pass through matter and not interact with that matter at all true
the creation of a characteristic photon in the diagnostic range is always the result of a K-shell electron ejection true
the creation of a characteristic photon is always the result of a K-shell electron ejection false
the electron ejected during a characteristic interaction is also known as the x-ray photon false
when a photon is absorbed, all of the energy is transferred to the matter true
when a photon is absorbed, it no longer exists true
when a scattered photon is defleted back toward the source, it is traveling in the direction opposite to the incident photon and is called backscatter radiation true
Created by: reetherockgoddess on 2009-09-12



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