Compared with hot electrons, hot holes show higher density below the Fermi level, the longer mean free path arising under the lower electron–electron and electron–phonon scatterings, a lower barrier ...

A systematic study of 12 ferric and ferrous Kβ X-ray emission spectra (XES) is presented. The factors contributing to the Kβ main line and the valence to core region of the spectra are experimentally ...

Save guides, add subjects and pick up where you left off with your BBC account.

Instead of trying to remember lots of different dot and cross diagrams, it may help to understand how to draw them.