For the same target element, compare the energies of its Kα, Kβ and Kγ characteristic X-ray photons. Which ordering is correct in the simple shell-transition picture?
Options

Question

For the same target element, compare the energies of its Kα, Kβ and Kγ characteristic X-ray photons. Which ordering is correct in the simple shell-transition picture?

G1 Physics · Accepted Answer

A Kα photon is emitted when an L-shell electron fills a K vacancy. A Kβ photon corresponds approximately to an M-shell electron filling the K vacancy. A Kγ photon corresponds approximately to an N-shell electron filling the K vacancy. The initial electron is less tightly bound in successively higher shells, so the energy released in falling to the K-shell increases: E(Kγ) > E(Kβ) > E(Kα). Correct option: B.