It is desired to investigate the interaction of et and e nucleon-antinucleon pair according to the equation of (a) To what energy must the positrons be accelerated energetically possible in collisions with stationary elec energy requirements change if the electrons are movir form of a high energy beam? (c) What is the minimum e (me c² = 0.51 MeV, Mp2 = 938 MeV)

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It is desired to investigate the interaction of et and e¯ in flight, yielding a
nucleon-antinucleon pair according to the equation of e+ e → p+ p.
(a) To what energy must the positrons be accelerated for the reaction to be
energetically possible in collisions with stationary electrons. (b) How do the
energy requirements change if the electrons are moving, for example in the
form of a high energy beam? (c) What is the minimum energy requirement?
(me 2² = 0.51 MeV, M₂ = 938 MeV)
[University of Bristol 1967]
Transcribed Image Text:It is desired to investigate the interaction of et and e¯ in flight, yielding a nucleon-antinucleon pair according to the equation of e+ e → p+ p. (a) To what energy must the positrons be accelerated for the reaction to be energetically possible in collisions with stationary electrons. (b) How do the energy requirements change if the electrons are moving, for example in the form of a high energy beam? (c) What is the minimum energy requirement? (me 2² = 0.51 MeV, M₂ = 938 MeV) [University of Bristol 1967]
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