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Unit 1 Rad Bio

Give the description of Alpha double ionized atom
Give the description of Beta negatron negative electron
Give the description of Beta positron Positive electron
Give the description of Proton Hydrogen Nuclei
Give the description of Negative Mesons Negatively charged particle with a mass 273 times that of an electron
Give the descrption of a Heavy Nuclei Any atom stripped of all its electrons
Give a description of Neutrons Neutron
Give the description of gamma electromagnetic radiation
Give the description of x-rays electromagnetic radiation
Give the mass and charge of Alpha M= 4 C= +2
Give the mass and charge of Beta Negatron M= .000555 C= -1
Give the mass and charge of Beta Positron M= .000555 C= +1
Give the mass and charge of Proton M= 1 C= +1
Give the mass and Charge of Negative Mesons M= .15 C= -1
Give the mass and charge of Heavy Nuclei M= Varies C= varies but ALWAYS Positive
Give the mass and charge of Netrons M= 1 C= 0
Give the mass and charge of Gamma M= 0 C= 0
Give the mass and charge of x-rays M= 0 C= 0
Define excitation Where a small amount of energy moves an outer shell electron(valence electron) to the higher energy shell... could cause covalent bonding changes
Define LET(Linear Energy Transfer) The number or amount of ionization of ion particles over a certain time, period, or path
Whats does the Bragg Peak indicate? It shows the dramatic increase in ionization just before coming to a rest
List the types of particulate radiation in order from highest to lowest Alpha, proton, neutrons, and electrons
List the types of particulate radiation in ordee from lowest to highest Electrons, neutrons, protons, and Alpha
What are the three main factors of magnetic attraction in LET particle charge, particle velocity,and the distance between the charges
Explain particle charge in LET The effect of two charged bodies on the other will depend on the Amount of charge: the rate at which energy is lost depends on the square of the charge of the particle
Explain particle velocity in LET The slower the moving charged particles will produce more ionization per unit path length- The ionization of a charged particle reaches the highest point just before coming to a rest
Explain the distances between charges in LET This follows the inverse square law, double the distance the attraction is reduced by 4 times... Decrease the distance by 5 times then the attraction will increase by 25 times
List the three ways that radiation can transfer energy Electromagnetic radiation, uncharged particulate radiation, and charged particulate radiation
Explain what happens during electromagnetic radiation transfer Because they have no mass or no charge the energy is transferred through collision/ a direct hit(determined by density of matter irriated, energy of photons, and atomic number
Explain what happens during uncharged particulate radiation transfer Neutrons has mass but no charge, they undergo direct action through collision or capture/ The neutron comes close to the nucleus of an atom and the nuclues pulls it inside by capture/ can cause a radioactive atom
Explain what happens during charged particulate radiation transfer Because these types of radiation have a mass and have a charge they cause direct action through collision, capture, and/or magnetic attraction/ like charges repulse and oppisites atrract
The effects of living matter is a result of Energy transferred
What is the principle way radiation is transferred Ionization
What relates the biological effect to energy absorbed RBE(relative biological effectiveness)
As RBE is increased what happens to LET it increases
The ionized atom and the ejected electron are known as an ion pair
Created by: atesta0824