Timeline for How can radio radiation ionize gases?
Current License: CC BY-SA 4.0
7 events
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| Nov 19, 2021 at 9:45 | comment | added | akhmeteli | I don't find confirmation of your reading in that article. You may look at en.wikipedia.org/wiki/Paschen%27s_law#Physical_mechanism , the gas discharge mechanism at radio frequency is pretty much the same. There are always some initial electrons (for example, from cosmic rays), but some external source of electrons can be used as well for stable discharge. | |
| Nov 19, 2021 at 8:23 | comment | added | anna v | @akhmeteli reading the article en.wikipedia.org/wiki/… I interpret it differently. after all there are no "free electrons" to start with in the initial gas. | |
| Nov 19, 2021 at 7:05 | comment | added | akhmeteli | "The radiation heats the gas, which means transfers kinetic energy to the atoms." My understanding is different. If it is not multi-photon ionization, but avalanche ionization, initial random free electrons are accelerated in the field, a combination of this acceleration and collisions with atoms increases kinetic energy of these electrons, and eventually they are able to ionize atoms and start an avalanche. | |
| Nov 19, 2021 at 6:49 | history | edited | anna v | CC BY-SA 4.0 |
correction after comment
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| Nov 19, 2021 at 6:49 | comment | added | anna v | @akhmeteli by everyday maning of heat. you are correct , it is only the process of heating that is used, i.e raising the temperature of the gas. I will edit | |
| Nov 19, 2021 at 6:13 | comment | added | akhmeteli | Why do you mention infrared radiation? 10-50 MHz is not normally considered infrared radiation (britannica.com/science/infrared-radiation). | |
| Nov 19, 2021 at 5:53 | history | answered | anna v | CC BY-SA 4.0 |