Gamma Decay

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• Gamma Decay
• Contents
• What it is
• Whiteboard

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Gamma Decay
23994Pu 23994Pu ?
Nucleus has energy levels Energy of transition
emitted as a high energy photon Usually after a
beta or alpha decay Many energies possible
Stopped by meters of lead Used for food
irradiation
TOC
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Gamma ray energies released after Bi-212 Alpha
decays
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Whiteboards Gamma Decay 1 2
TOC
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23994Pu --gt 23994Pu ? 239.054238
--gt 239.052157 What is the energy of the
gamma emitted?
Parent mass 239.054238 u Product mass
239.052157 u Mass defect parent - products
0.002081 u Energy of radiation
(0.002081u)(931.5 MeV/u) 1.94 MeV
W
1.94 MeV
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24596Cm --gt 24596Cm ? ???.??????
--gt 245.065484 What is the excited mass of the
parent, if a 3.92 MeV gamma photon is emitted?
Mass of 3.92 MeV (3.92 MeV)/(931.5 MeV/u)
0.004208266 u Excited parent is more massive than
this by that amount Parent mass 245.065484
.004208266 u 245.069692 u
W
245.069692