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14 Cards in this Set
- Front
- Back
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Alpha particles can be stopped by
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alpha particles can be stopped by a sheet of paper, but cause dense ionization and excitation along the track
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Alpha particle track is ...
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straight and short in the materials it penetrates
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Beta Particle track is ....
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scattered frequently (drunken mans path)
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One MeV beta particle can travel ___ feet in the air or 0.4cm in _____
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One MeV beta particle can travel 10 feet in the air or 0.4cm in water
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Beta particle excitation is ______ than the alpha particle
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Beta has lower amount of ionizaiton and excitation, but penetrate further
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Gamma or x-ray interaction depends on what energy and what
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the interaction between gamma or xrays depends on photon energy and the atomic number of the material
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Photon implies what?
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photon is particle like behavior of an electromagnetic wave.
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Photoelectric effect is...
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Absorbs photon. Have the highest probability with a low energy photon and high atomic number absorber
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What can shield from gamma and xrays
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dense materials like lead or thick concrete. Leaded glass or plastics acn be used for low energy and xray shielding
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Compton scattering
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scattering of gamma or xrray by an electron in an atom. actual energy change depends on the incident energy and the angle at which it is scattered
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Pair production
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photon with high energy--> + electron and - electron =cause ionization.
Mass is converted to energy and energy is converted to mass |
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Types of neutron interaction
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Absorption by the nucleus by atom
elastic collision inelastic collision |
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result of neutron abosorbtion by nucleus
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secondary radiation, gamma or beta is produced
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ex. of neutron interaction with what elements
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Uranium and plutonium
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