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IEVref: | 395-01-31 | ID: | |

Language: | en | Status: Standard | |

Term: | mean energy expended per ion pair formed | ||

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Symbol: | W_{i}
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Definition: | quotient of E by $\overline{N}$, where $\overline{N}$ is the mean number of ion pairs formed when the initial kinetic energy E of a charged particle is completely dissipated ${W}_{\text{i}}=E/\overline{N}$ Note 1 to entry: This quantity is expressed in joules (J) or electronvolts (eV). Note 2 to entry: This entry was numbered 393-14-54 in IEC 60050-393:2003. | ||

Publication date: | 2014-03 | ||

Source: | ISO 921:1997, definition 60, modified | ||

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${W}_{\text{i}}=E/\overline{N}$

Note 1 to entry: This quantity is expressed in joules (J) or electronvolts (eV).

Note 2 to entry: This entry was numbered 393-14-54 in IEC 60050-393:2003.