Test 2 Physics (odd)
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What are the differences between electrons and protons
- Electrons are light, negatively charged particles that collide and interact with other particles.
- Protons are heavy, positive charge particles that only interact with electrons.
During xray production, the resulting xray beam comes from electrons colliding with the target causing interactions such as
- characteristic radiation
- Bremsstrahlung radiation &
- Auger electrons
The positive side of the basic x-ray tube is know as the _______
The ratio of xray to heat during xray production is variable depending on the __________ of electrons transversing the tube.
An _________ collision is one in which the incoming electron gives all of its energy to the electrons it encounters.
Name the photon interactions
- photon disentintegration
- coherent scattering
- photelectric effect
- compton effect
- pair production
Name the electron interactions
Regarding isotopes, isotopes are an element that have the same # of ____ but a different # of neutrons
___isotopes___isobars___isotones___isomerA. IR192m IR192m
B. 27Fe59, 27Fe58
C. 28NI60, 31Ga60
D. 11Na22, 10Ne21
- A. isomer
- B. isotope
- C. isobar
- D. isotone
If using a tungsten target, the fx of 4 MeV electrons converted to photons is
- .1036 or 10.36%
The probability of photoelectric interaction_______ with increasing energy and ________ with the atomic # of the medium.
A neutral atom that loses an electron by ionization is called a
A certain atom has binding energies of 70eV in the L shell and 10eV in the M shell. During an M shell to L shell transition, the photon emitted will have the energy of ____
An atom is neutral if the # of its electron is = to its
The photons produced during the orbital transitions of electrons from a higher to lower energy are called
2 or more chemicals with the same chemical formula, but having difference nuclear states are known as
How many disintegration per min are there in 1 Ci?
3.7 X 1010 dpm
On Jan 1, we receive 80 mCi of an isotpe with a 1/2 life of 8 days. The activity remaining on Jan 25 would be
- 10 mCi
- A=80 (.5)^3)
- A=80 (.125)
The wavelength of xrays are measured in
The photoelectric process is essentially an interaction between a photon and a ______ electron
A deutron is the nucleus of an isotope of H2. Which of the following is true?
A. it has a mass # of 2
B.it has an atomic # of 2
C. it has a positive charge of 2
D. is has an energy of 2 MeV
The probability that a photon interacts with a material is _____ to the attenuation coefficient
Out of Alpha, Beta, Proton and Neutrons, which is produced during natural radioactive decay
Out of Alpha, Beta, Proton and Neutrons, which can carry a + or - charge
Out of Alpha, Beta, Proton and Neutrons, which has helium nucleus
Out of Alpha, Beta, Proton and Neutrons, which has hydrogen nucleus
Out of Alpha, Beta, Proton and Neutrons, which has greatest internal hazard
Out of Alpha, Beta, Proton and Neutrons, which cannot ionize directly and interacts with only the nucleus
Out of Alpha, Beta, Proton and Neutrons, which may be referred to as an electron or positron
Out of Q- Quantity, H-quality, and B for both, which is affected by altering time of exposure
Out of Q- Quantity, H-quality, and B for both, which is affected by altering tube current
Out of Q- Quantity, H-quality, and B for both, which is affected by altering target material
Out of Quantity, quality, or both, which is affected by altering distance
Out of Q- Quantity, H-quality, and B for both, which is affected by altering filtration
Out of Q- Quantity, H-quality, and B for both, which is affected by altering kVp
Out of Q- Quantity, H-quality, and B for both, which is affected by altering generator type
I131 and I125 have different #s of
Neutron decay ______ (is/is not) a type of nuclear decay.
The radioactive decay of a radioisotope is characterized by its:
The energy of an electromagnetic radiation is _________ proportional to its wavelength.
energy <inversely> wavelength
The energy of an electromagnetic radiation is _________ proportional to its frequency.
Cobalt 60 decays by ______.
To interact by photoelectric effect, the interacting photon must have energy equal or greater than the :
Binding energy of the orbiting electron
Carbon 14 and Nitrogen 14 are:
When a long-lived radionuclide decays to a short-lived daughter, it is known as ________ equilibrium.
________ implies the removal of an electron from the atom.
When a radionuclide decays, radiation is emitted from the ________.
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