nuclear stability and instability library/20040728.pdf · title: microsoft powerpoint - mod 04...

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Nuclear Stability and Instability

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Page 1: Nuclear Stability and Instability Library/20040728.pdf · Title: Microsoft PowerPoint - Mod 04 Nuclear Stability and Instability.ppt [Read-Only] Author: yulia.kosarenko Created Date:

Nuclear Stability and Instability

Page 2: Nuclear Stability and Instability Library/20040728.pdf · Title: Microsoft PowerPoint - Mod 04 Nuclear Stability and Instability.ppt [Read-Only] Author: yulia.kosarenko Created Date:

n:p, 1:1

O-16, 1:1

Zn-90, 1.25:1

U –238, 1.59:1

Beta Decay

Page 3: Nuclear Stability and Instability Library/20040728.pdf · Title: Microsoft PowerPoint - Mod 04 Nuclear Stability and Instability.ppt [Read-Only] Author: yulia.kosarenko Created Date:

Neutron Deficient

Neutron Rich

Neutron Rich•B- decay•Many in a reactor

Neutron Deficient•Rare in reactors•B+ decay•Electron capture

Beta Decay

Page 4: Nuclear Stability and Instability Library/20040728.pdf · Title: Microsoft PowerPoint - Mod 04 Nuclear Stability and Instability.ppt [Read-Only] Author: yulia.kosarenko Created Date:

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

Page 5: Nuclear Stability and Instability Library/20040728.pdf · Title: Microsoft PowerPoint - Mod 04 Nuclear Stability and Instability.ppt [Read-Only] Author: yulia.kosarenko Created Date:

Alpha DecayLarge nuclei Z>83U-238 and U-235