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Gamma Decay Contents: What it is WhiteboardPowerPoint Presentation

Gamma Decay Contents: What it is Whiteboard

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Gamma Decay Contents: What it is Whiteboard

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g

- Gamma Decay
- Contents:
- What it is
- Whiteboard

- What it is

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

Whiteboards:

Gamma Decay

1 | 2

TOC

23994Pu --> 23994Pu +

239.054238 --> 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

24596Cm --> 24596Cm +

???.?????? -->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