THE CONSERVATION OF ENERGY
315. ..
(1) the kinetic'énergy, %mz,
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—
.
(2) the mass or self energy when the nucleus is in the ground
state, mc2- (equation 2—27),
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(3) the excitation energy,Eœ (precedingSection),
(4) the quantum energy, /zv (equation 4—7). ‘
The inlama[ energy is the sum of (2) and (3).
.
v
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These forms of energy may be expressed in ergs, mass units or in
electron volts. The latter is the more customary uñit. Conversion
factors will be found on'the back y leaf of this book.
.
We may write
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,
WA+WP+EP=WB+WQ+ET
in which the W’s are internal"energies, the E’s are kinetic energies,
 and B refer to the original and ”residual nuclei‘, P and Q to “the
incident and ej ected particles, respectively. --It is here assumed that
the original nucleus is at rest. The total kinetic
ET, after
the collision is
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»
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r
«
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-
EQ- ‘
(14—9)
This is distributed between
(B);eindthé ej ected
particle (Q) in amannersuchÎ
ConserVÇ
the momentum.
Equation 14—8 may be written
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E1sknownasthereaconenæIt1sp081tlve
(kinetic)
‘
.
actwn)andlsnegatlvewhenenefgÿls1@St(anend°thefmlc fea°;
on)Thecalculaüon0fïmaÿbemad”…se“… 14€“*5Ê Fï°ï
'
-
.
Volts(MeV)posmvetwhkeamountnegaü"€
_,
'
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,
Whenthenucleuslsleftmlthm‘mdStat€EWIHhaVÊamaX1
=
mumvalueandtheparüdewle6J°Cœdwh1tsgreatestVd°° —
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