Soft X-ray emission from potassium metal in the 40–1000 Å range

Abstract

The emission in the 40–1000 Å range, excited in a potassium target by electron bombardment, has been examined using the grazing incidence photon counting spectrometer described previously. A total of seven lines and bands are observed of which two are identified as the L and M valence spectra, three are identified as diagram lines, and two broad lines remain unidentified. An energy level scheme for solid potassium in emission has been constructed.

A note regarding the energy of the L₁ level in sodium, magnesium and aluminium is appended.