| 21. | Both techniques involve bombarding the sample with electrons, and measuring the negative ions produced.
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| 22. | So it is ion channels which prevent negative ions passing through while allowing positive ions?
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| 23. | Also, in an acid battery, both positive and negative ions are traveling in opposite directions.
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| 24. | But in electrides, the electrons are the negative ions.
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| 25. | Ionic solids like salt are made of positive and negative ions which attract each other.
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| 26. | Therefore, the authors only took the recombination rates of the positive and negative ions into consideration.
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| 27. | The gas captures the conducting free electrons in the arc to form relatively immobile negative ions.
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| 28. | DART can also operate in the negative ion mode by which negatively charged species are formed.
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| 29. | Increasing the pressure will help stabilize the anions and extend the lifetimes of the negative ions.
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| 30. | In particular, the sensitivity became more than one order of magnitude higher in negative ion modes.
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