ν,t) = photon density at a given frequency and temperature...
TRANSCRIPT
N1 and N1 are nos. of each state present
u(ν,T) = photon density at a given frequency and temperature(as in black body problem), proportional to ρ(λ,T) =
n(λ)Eaver(λ)c/4
A21, B12, B21 = constants involving transition rates (to bedetermined from dipole rules)
dN/dt = -λNIntegrate
N = N0at t = 0
The Basic Law of Nuclear Decay:
14 146 7
1 / 2
E.g.C N
(beta electron emission )anti neutrino
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β −
−
→ +
+ −=
→→
What happens to thisone then?
Enriched for nuclearweapon or fissionreactor use
Most of naturaluranium