Nuclear Stability and Instability Library/20040728.pdf · Title: Microsoft PowerPoint - Mod 04...
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Nuclear Stability and Instability
Transcript of Nuclear Stability and Instability Library/20040728.pdf · Title: Microsoft PowerPoint - Mod 04...
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Nuclear Stability and Instability
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n:p, 1:1
O-16, 1:1
Zn-90, 1.25:1
U –238, 1.59:1
Beta Decay
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Neutron Deficient
Neutron Rich
Neutron Rich•B- decay•Many in a reactor
Neutron Deficient•Rare in reactors•B+ decay•Electron capture
Beta Decay
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Beta Decay ChainsU-235, n:p = 1.53Fission fragments are neutron richDecay in a chain until a stable nuclide is reached
Te-135 I-135 Xe-135 Cs-135 Ba-135
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Alpha DecayLarge nuclei Z>83U-238 and U-235