Radioactive Decay
The result of a decay where the atomic mass decreases by 4.
What is alpha decay?
The radiation that should be shielded with low density material.
What is beta particle?
Above the line of stability represents a region with an abundance of ______.
What is neutrons?
_____ governs accelerator produced radionuclides.
What is the state?
The interaction that absorption of the gamma ray and the amount of energy transfer depends on the incident angle.
What is Compton Effect/Scatter?
The result of a decay where the atomic number increases by one.
What is negatron decay?
The time it takes for the body to remove half of a substance through excretion.
What is biological half-life?
In a decay scheme, the daughter is placed to the ____ representing the lower atomic number.
What is left?
Fission fragments have an excess number of _____.
What is neutrons?
An interaction that involves the conversion of energy to the mass of two electrons.
What is pair production?
Unique to both positron and negatron decay.
What is Bremsstrahlung?
Shielding effectiveness ____ with increasing photon energy.
What is decreases?
A radionuclide that requires a single gamma emission to move to ground state.
What is monoenergetic?
The use of slow neutrons is the result of what type of reaction.
What is (n,gamma)?
Type of interaction where a photon strikes an inner shell electron and transfers all of its energy to the electron.
What is photoelectric effect?
The decays that result in the parent and daughter being isobars.
What is positron and electron capture?
Cells that are most susceptible to damage by ionizing radiation.
What is undifferentiated cells (stem cells)?
Radioactive decay that occurs when radionuclides are above the line of stability.
What is negatron decay?
Type of production that results in a (p,n) type of reaction.
What is cyclotron (accelerator)?
Type of interaction where energy from the nucleus is transferred to an orbital electron.
What is internal conversion?
Radioactive transition from the high to low energy state through gamma emission.
What is isomeric transition?
When radiation interacts with water in the cell ____ is created and is thought to be the main cause of indirect radiation damage.
What is free radicals?
Electron energy state increases and binding energy decreases as we move away from the ____ shell.
What is the K shell?
The 99Mo/99mTc concentration ratio.
What is 0.15 uCi of 99Mo per 1 mCi of 99mTc?
An interaction that is most likely to happen with low energy photons and high density materials.
What is photoelectric effect?