This paper is a little beyond my knowledge base, but perhaps others can make more sense of it.
Motion Characteristics of Single Electrons of Atoms of Atomic Gas of Hydrogen and Single Electrons of Hydrogen-Like Ions in Form Gas or Vapour during Decays of Such Atoms and Ions. Emission Line Spectra http://www.scirp.org/journal/PaperInformation.aspx?PaperID=49252#.VZZeXPlVhBe The author claims this may be an explanation for energy production in the E-cat. Jack
