(3) Interaction of high energy photons with matter - LUTH

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Thomson and Compton scattering cross-sections (1) For photon energies ℏ
Thomson and Compton scattering cross-sections (2) The radiation of an accelerated charged particle as a function of the scattering angle is given by: − dI dt d = e 2 ∣¨r∣ 2 16 2 0c 3 sin2 d is the angle between the acceleration vector and the direction of emission. The integral over d is just the Larmor formula. − dI d = dt x − dI d = dt y e 4 ∣E x∣ 2 16 2 2 me 0 c 3 cos2 d e 4 ∣E y∣ 2 16 2 2 me 0c 3 d We replace the electric field components by the Poynting flux (energy / unit area): S x = Ex x 2 H = c0 E 2 x iz Sx = c0E x ; similar : Sy = c0E y 2 Ex 0 Here we are actually using time averages: Ex = 2 For an unpolarized wave S x = S y = S / 2, thus... A. Zech, Instrumentation in High Energy Astrophysics 2 2 7
Page 1 and 2: (3) Interaction of high energy phot
Page 3 and 4: Photoelectric Absorption Edges The
Page 5: Compton Scattering The Compton effe
Page 9 and 10: Thomson and Compton scattering cros
Page 11 and 12: Compton scattering - energy transfe
Page 13 and 14: Inverse Compton Scattering A. Zech,
Page 15 and 16: Inverse Compton Scattering - energy
Page 17 and 18: Electron-Positron Pair Production -
Page 19 and 20: Electron-Positron Pair Production i
Page 21 and 22: Electron-Positron Pair Production i
Page 23 and 24: Pair Production in photon-photon co
Page 25 and 26: Pair Production in photon-photon co
Page 27 and 28: Comparison of photon cross-sections
Page 29 and 30: Excitation of Resonances - the GZK
Page 31 and 32: Proportional Counters & Geiger Coun
Page 33 and 34: Delta Rays The generation of second
Page 35 and 36: Mass Spectrometer Mass spectrometer
Page 37 and 38: Time Projection Chamber (TPC) The m
Page 39 and 40: Spark Chambers (2) A. Zech, Instrum
Page 41 and 42: Semiconductors as Solid State Detec
Page 43 and 44: Semiconductors (2) - pn-junctions f
Page 45 and 46: Recording with a three-phase CCD: C

(3) Interaction of high energy photons with matter - LUTH

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