What is the result of an outer shell electron taking the place of an inner shell electron following photoelectric absorption?

When an outer shell electron takes the place of an inner shell electron following photoelectric absorption, a characteristic x-ray is formed. This process begins when an inner shell electron is ejected from the atom due to the absorption of a photon, which provides enough energy to remove it. This vacancy creates a situation where an outer shell electron can transition down to fill the inner shell's vacancy.

As this outer shell electron moves to fill the inner shell position, it releases energy in the form of a photon, specifically a characteristic x-ray. This emitted photon has a specific energy that corresponds to the difference in energy levels between the inner shell and the outer shell. The characteristics of the x-ray emitted depend on the specific elements involved, as each element has unique energy levels.

This process is essential in understanding how x-rays interact with matter and how energy is transferred during these interactions.