Creating free superoxide in air

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The discussion centers on the creation of free superoxide, which is distinct from ozone, often referred to inaccurately as a negative air ion. It highlights that in air, ozone is inevitably produced alongside superoxide when using a high-voltage (HV) electrode. The main inquiry is how to generate superoxide without the concurrent formation of ozone. A proposed method involves directing a helium jet onto the HV cathode to prevent ozone formation. This approach suggests that the helium could temporarily hold electrons until they interact with oxygen, which is electronegative, thus facilitating the creation of free superoxide. It is noted that ozone formation requires oxygen to be present in the corona of the HV cathode due to ultraviolet light and strong electric fields, while superoxide can be formed simply by oxygen contacting free electrons.
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this question relates to creating free superoxide so it is not a superoxide of anything. another more un-accurate but common name for it is a negative air ion.
in air, ozone is always going to be co-created in any process that creates superoxide.
a HV electrode (-) in air produces mostly ozone and superoxide. but how to make the superoxide without the ozone?
would a helium jet directed onto the HV cathode prevent the ozone being formed and allow the electrons to temporally stay in the helium until they contact oxygen and get transferred to the oxygen (as oxygen is electronegative) thereby creating free superoxide?
[[info: oxygen needs to be in the corona of the HV cathode for ozone to be formed due to the UV and strong electric fields. whereas superoxide needs only for oxygen to come in contact with free electrons.]]
 
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Superoxide of what?
 
this question relates to creating free superoxide; so it is not a superoxide of anything. another more un-accurate but common name for it is a negative air ion.
 

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