Why is the energy threshold for electron–positron pair production actually higher than the sum of their two masses (1.022 MeV in energy terms)?
Answer to relevant QuestionsExplain why there are always two photons created in pair annihilation. Why cannot the process create just one photon? According to the Bohr theory of the hydrogen atom, the speed of the electron in the first Bohr orbit is 2.19 x 106 m/s. (a) What is the wavelength of the matter wave associated with the electron? (b) How does this ...If the de Broglie wavelength associated with an electron is 7.50 x 10-7, what is the electron’s speed? A 1.0-kg ball has a position uncertainty of 0.20 m. What is its minimum momentum uncertainty? What is the threshold energy for the production of an electron–positron pair?
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