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Can there be free electrons in interstellar gas in the long term?

The amount of free electrons in the interstellar medium (ISM) depends on its temperature, the ambient radiation field, and the chemical composition of the gas. Hot gas ($T\sim10^6\,\mathrm{K}$) is ...
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Can there be free electrons in interstellar gas in the long term?

Any individual free electron will never stay free individually indefinitely. It will recombine with a free ion if it meets one. It may take a long time in interstellar space, but eventually it will. ...
Thomas's user avatar
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