. "\\(N_{il} = \\frac{1}{e}\\frac{dQ}{dl}\\), where \\(e\\) is the elementary charge and \\(dQ\\) is the average total charge of all positive ions produced over an infinitesimal element of the path with length \\(dl\\) by an ionizing charged particle."^^ . "Linear Ionization"@en . . "N_{il}" . . . . . . "\"Linear Ionization\" is a description of how the ionization of an atom or molecule takes place. For example, an ion with a +2 charge can be created only from an ion with a +1 charge or a +3 charge. That is, the numerical charge of an atom or molecule must change sequentially, always moving from one number to an adjacent, or sequential, number. Using sequential ionization definition." . "http://www.iso.org/iso/catalogue_detail?csnumber=31895"^^ . . "http://en.wikipedia.org/wiki/Ionization#Classical_ionization"^^ . .