30.2 Physics 6C Radioactivity

30.2 Physics 6C Radioactivity - Physics 6C Radioactivity...

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Unformatted text preview: Physics 6C Radioactivity Prepared by Vince Zaccone For Campus Learning Assistance Services at UCSB Prepared by Vince Zaccone For Campus Learning Assistance Services at UCSB Alpha Decay ( α ) When a nucleus is too large to be stable, it will often emit an alpha-particle, which is really just a helium nucleus (2 protons and two neutrons). The alpha particle carries away some energy, and the resulting nucleus has 2 fewer protons and 2 fewer neutrons (and thus is 2 places lower on the periodic table). Types of Radioactive Decay Prepared by Vince Zaccone For Campus Learning Assistance Services at UCSB Alpha Decay ( α ) When a nucleus is too large to be stable, it will often emit an alpha-particle, which is really just a helium nucleus (2 protons and two neutrons). The alpha particle carries away some energy, and the resulting nucleus has 2 fewer protons and 2 fewer neutrons (and thus is 2 places lower on the periodic table). Types of Radioactive Decay Beta Decay ( β ) When a nucleus has too many excess neutrons, it may undergo beta-minus decay, whereby a neutron decays into a proton and an electron. The electron is emitted, leaving the nucleus with one more proton than before (and one less neutron). So the result is an atom that is one step higher on the periodic table. Prepared by Vince Zaccone For Campus Learning Assistance Services at UCSB Alpha Decay ( α ) When a nucleus is too large to be stable, it will often emit an alpha-particle, which is really just a helium nucleus (2 protons and two neutrons). The alpha particle carries away some energy, and the resulting nucleus has 2 fewer protons and 2 fewer neutrons (and thus is 2 places lower on the periodic table). Types of Radioactive Decay Beta Decay ( β ) When a nucleus has too many excess neutrons, it may undergo beta-minus decay, whereby a neutron decays into a proton and an electron. The electron is emitted, leaving the nucleus with one more proton than before (and one less neutron). So the result is an atom that is one step higher on the periodic table....
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This note was uploaded on 09/09/2011 for the course PHYSICS 6c taught by Professor Staff during the Spring '11 term at UCSB.

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30.2 Physics 6C Radioactivity - Physics 6C Radioactivity...

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