2. Electron-positron annihilation A positron with kinetic energy equal to twice its rest mass energy is incident on an...
An electron (rest mass me) of energy E makes a head-on collision with a positron (positron is electron’s antiparticle, it has the same mass as electron, but opposite charge) In collision the two particles annihilate each other and are replaces by two photons (γ rays) of equal energy, each traveling at equal angles θ with electron’s direction of motion. Find 1. The energy of each photon. 2. The momentum p of each photon. 3. The angle θ. Problem 3. Electron-positron...
8-14 positron-electron annihilation A positron et of mass m and kinetic energy K is annihilated on a target containing electrons e(same mass m) practically at rest in the laboratory frame: et(fast) +e-(at rest) → radiation a By considering the collision in the center-of- momentum frame (the frame of reference in which the total momentum of the initial particles is equal to zero), show that it is necessary for at least two gamma rays (rather than one) co result from the...
the annihilation of an electron and a positron, each with negligible kinetic energy, results in the production of two photons with the same energy. (a) Determine the energy of each photon in MeV. MeV (b) Determine the wavelength of each photon. m
the annihilation of an electron and a positron, each with negligible kinetic energy, results in the production of two photons with the same energy. (a) Determine the energy of each photon in MeV. MeV (b) Determine the wavelength of each photon. m
3. A photon creates a electron-positron pair. The kinetic energy of the electron is 2.20 times that one of the positron. What is the kinetic energy of the electron if the energy of the photon is 2.80 times the rest mass energy of the electron? (The rest mass of a electron is 9.11 x10-31 kg.) O 0.128 MeV O 0.819 MeV O 0.281 MeV O 0.409 MeV O 0.186 MeV
a.) A photon with kinetic energy equal to the mass energy of an electron scatters from an electron at angle ( pi/2). Find the wavelength of the scattered photon. b.) A photon with kinetic energy equal to the mass energy of an electron scatters from an electron at angle ( pi ). Find the wavelength of the scattered photon.
An electron-positron pair is produced by a 2.30 MeV photon. What is the kinetic energy of the positron if the kinetic energy of the electron is 0.958 MeV? Use the following Joules-to-electron-Volts conversion 1eV = 1.602 × 10-19 J. The rest mass of an electron is 9.11 × 10-31 kg
An electron-positron pair is produced by a 2.85 MeV photon. What is the kinetic energy of the positron if the kinetic energy of the electron is 1.219 MeV? Use the following Joules-to-electron-Volts conversion 1eV = 1.602 × 10-19 J. The rest mass of an electron is 9.11 × 10-31 kg Please answer in MeV
11 The energy of an annihilation photon (511 keV) corresponds to the: A: Speed of light in vacuum B: Rest-mass energy equivalent of 1 electron C: Binding energy of a PET-isotope D: Total sum of the electron and positron rest mass 12 An annihilation photon has the frequency: A: 511 MHz B: 1.235E+20 Hz C: 1.235E+17 Hz D: 7.712E+38 Hz 13 An annihilation photon has the wave-length: A: 1.522E-12 m B: 1.235E-12 m C: 2.427E-12 m D: 0.102E-10 m 14...
PHYS10121 a) A particle of rest mass m is travelling so that its total energy is 2mc. It collides with a stationary particle of rest mass m to form a new single particle. What is the 2. rest mass of the new particle? 9 marks] b) A photon hits an electron at rest and produces an electron-positron pair according to the reaction γ+ e- e" + e-+e+, what is the smallest possible photon energy for this to occur? You may...