To begin with, where does antimatter come from? To answer that question let’s first look at the makeup of matter. Pair production converts energy into particles and antiparticles, but only subatomic particles are produced. Atomic nuclei greater than one proton require another process.
Pair Production & Annihilation |
e– + e+ ↔ 2γe |
p+ + p– ↔ 2γp |
n0 + n0 ↔ 2γn |
Atoms combine subatomic particles to form, but atoms heavier than hydrogen need help. Nucleosynthesis produces some of the lighter elements, when hydrogen atoms smash into one another at high velocities. However, heavier element require fusion, which happens deep within the core of stars. So how do heavy elements escape from stars?
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