Practice Exam #1 24-35 Flashcards
In the chart of the nuclides a gray box indicates the isotope is?
A stable nuclide
In a nuclide with a low neutron to proton ratio, an electron can drop into the nucleus and combine with a proton to form a neutron. This is described as “electron capture” and will result in the emission of which of the following?
Neutrino plus characteristic x-rays
Which of the following best describes a gamma ray?
- Travel at the speed of light.
- Electromagnetic radiation.
- And Behave as small bundles of energy
Gamma rays and X-rays are photons with the major difference being where they originate. Gamma rays originate from the electron shells. True or False?
False
Which of the following best describes Bremsstrahlung radiation?
High speed particles traveling near an atom with a high Z number being deflected from it course by the electrostatic force of the positively charged nucleus resulting in the emission of x-rays.
Beta particles are emitted with kinetic energies ranging up to the maximum value of the decay energy called Emax, however, the average energy of beta particles is about 1/3 of Emax. True or False?
True
This is true concerning an atom going through beta minus decay.
- The atom has an excess number of neutrons.
- During decay a neutron is changed into a proton resulting in the emission of a beta particles.
- And the beta particle would have a negative charge
Which of the following is not a method that gamma rays interact with matter?
Bremsstrahlung
When a gamma photon transfers part of its energy to an electron, resulting in the less energetic photon changing direction, is a description of which gamma interaction below?
Compton Scatter
Thermal neutrons (slow neutrons) have an energy of:
.025 eV
Uranium and Thorium are two examples of natural occurring radioactive elements found in the earth’s crust. True or False?
True
This statement is true concerning radon?
- Is naturally present in soil.
2. And originates from the decay of uranium and Emitters an alpha particles.
