Panasonic PT-DZ12000U

RADIATION INTERACTIONS
Charged Particles
Ionization, Excitation, Bremsstrahlung (â ), Annihilation (â )
-+
Neutrons
Scattering (E > 0.025 eV)
Elastic (energy and momentum are conserved)
Inelastic (photon emitted)
Absorption (E < 0.025 eV)
Radiative Capture (n, ã)
Particle Emission (n, á) (n, p) (n, n)
Fission (n, f)
Gamma or X-ray photons
Photoelectric Effect (generally < 1 MeV)
Compton Scattering (generally 200 keV - 5 MeV)
Pair Production (minimum 1.022 MeV)
Scattered Photon
02
T' = T / [1 + T(1 - cos è) / m c ]
where c = 931.5 MeV / amu
2
Bremsstrahlung
emitted energy is ~ 1/3 of the electron energy
x0
Photon Attenuation: I= Ie
µx
Interaction Probability per gram:
Photoelectric % Z / E
33
Compton independent of Z
Pair Production % Z
1
Total pe cs cc
µ = µ+µ+µ
Air
W = 33.9 eV per ion pair
Specific Ionization = S/W (i.p. / cm)
52
RADIATION INTERACTIONS
Charged Particles
Ionization, Excitation, Bremsstrahlung (â ), Annihilation (â )
-+
Neutrons
Scattering (E > 0.025 eV)
Elastic (energy and momentum are conserved)
Inelastic (photon emitted)
Absorption (E < 0.025 eV)
Radiative Capture (n, ã)
Particle Emission (n, á) (n, p) (n, n)
Fission (n, f)
Gamma or X-ray photons
Photoelectric Effect (generally < 1 MeV)
Compton Scattering (generally 200 keV - 5 MeV)
Pair Production (minimum 1.022 MeV)
Scattered Photon
02
T' = T / [1 + T(1 - cos è) / m c ]
where c = 931.5 MeV / amu
2
Bremsstrahlung
emitted energy is ~ 1/3 of the electron energy
x0
Photon Attenuation: I= Ie
µx
Interaction Probability per gram:
Photoelectric % Z / E
33
Compton independent of Z
Pair Production % Z
1
Total pe cs cc
µ = µ+µ+µ
Air
W = 33.9 eV per ion pair
Specific Ionization = S/W (i.p. / cm)
52
RADIATION INTERACTIONS
Charged Particles
Ionization, Excitation, Bremsstrahlung (â ), Annihilation (â )
-+
Neutrons
Scattering (E > 0.025 eV)
Elastic (energy and momentum are conserved)
Inelastic (photon emitted)
Absorption (E < 0.025 eV)
Radiative Capture (n, ã)
Particle Emission (n, á) (n, p) (n, n)
Fission (n, f)
Gamma or X-ray photons
Photoelectric Effect (generally < 1 MeV)
Compton Scattering (generally 200 keV - 5 MeV)
Pair Production (minimum 1.022 MeV)
Scattered Photon
02
T' = T / [1 + T(1 - cos è) / m c ]
where c = 931.5 MeV / amu
2
Bremsstrahlung
emitted energy is ~ 1/3 of the electron energy
x0
Photon Attenuation: I= Ie
µx
Interaction Probability per gram:
Photoelectric % Z / E
33
Compton independent of Z
Pair Production % Z
1
Total pe cs cc
µ = µ+µ+µ
Air
W = 33.9 eV per ion pair
Specific Ionization = S/W (i.p. / cm)
52
RADIATION INTERACTIONS
Charged Particles
Ionization, Excitation, Bremsstrahlung (â ), Annihilation (â )
-+
Neutrons
Scattering (E > 0.025 eV)
Elastic (energy and momentum are conserved)
Inelastic (photon emitted)
Absorption (E < 0.025 eV)
Radiative Capture (n, ã)
Particle Emission (n, á) (n, p) (n, n)
Fission (n, f)
Gamma or X-ray photons
Photoelectric Effect (generally < 1 MeV)
Compton Scattering (generally 200 keV - 5 MeV)
Pair Production (minimum 1.022 MeV)
Scattered Photon
02
T' = T / [1 + T(1 - cos è) / m c ]
where c = 931.5 MeV / amu
2
Bremsstrahlung
emitted energy is ~ 1/3 of the electron energy
x0
Photon Attenuation: I= Ie
µx
Interaction Probability per gram:
Photoelectric % Z / E
33
Compton independent of Z
Pair Production % Z
1
Total pe cs cc
µ = µ+µ+µ
Air
W = 33.9 eV per ion pair
Specific Ionization = S/W (i.p. / cm)
52