Photon Strength Functions below GDR Maximum: Present Status and Outlook
ν,T) = photon density at a given frequency and temperature...
36
N 1 and N 1 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)E aver (λ)c/4 A 21 , B 12 , B 21 = constants involving transition rates (to be determined from dipole rules)
-
Upload
phungxuyen -
Category
Documents
-
view
218 -
download
1
Transcript of ν,T) = photon density at a given frequency and temperature...
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)
High photondensity u(ν,T)
inside→Strong stimulated
emission
Strings?
OVERALL POTENTIAL BETWEENTWO NUCLEONS:
proton-protonproton-neutronneutron-neutron
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
T 5730 yearstool for dating
archeo log ical objects
β −
−
→ +
+ −=
→→
Nucleus has Excess energy
What happens to thisone then?
Enriched for nuclearweapon or fissionreactor use
Most of naturaluranium
τ = torque
torqueB,
perpendicular to
τ
μμ
=
= ×
(SEE SECTION 13.4)
(SEE SECTION 13.6)
Strings?
Mediating ParticleForce
F•
•
Strings?
JUNE, 2004:m = 178,000±4,300 MeV/c2
Mediating ParticleForce
F•
•
Strings?
