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Questions
What is ‘Pair production’?
Answer the following question briefly and to the point:
What is Pair production?
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Solution 1
An electron and a positron are produced when an intense γ-ray photon strikes a heavy material. One of the substance’s nuclei is responsible for absorbing the photon. Pair creation is the term used to describe this process of energy being transformed into mass.
Equation: \[\ce{\underset{(γ-Photon)}{γ} = \underset{(Electron)}{_-1β^0} + \underset{(Positron)}{_+1β^0}}\]
Solution 2
In a semiconductor, when a covalent bond is broken, the electron comes out, leaving behind a hole (deficiency of electrons). Thus, an electron-hole pair is formed by rupturing a covalent bond.
Solution 3
A positron pair from a gamma ray (or radiation) photon passes close to an atomic nucleus.
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