warning: this is my first post
ok, so i constructed a Birkeland Eyde apparatus and everything has been working normally, I'm using a small NST but what can you do the bigger ones are very difficult to find. Anyways, as I run my apparatus for extended periods of time, a white substance appears to deposit on the wall of the glass chamber in which the electric arc resides. The longer I run it the more deposit forms. I would like to try and figure out exactly what this compound is. My apparatus is designed in such a way that the only elements this compound could be formed from are Nitrogen, Oxygen, Hydrogen, Chromium, Iron. I'm fairly sure that it couldn't be the chromium and and iron from the stainless steal electrodes as I have previously tried this with copper electrodes and the same deposit formed. I don't believe that CO2 in the air could have contributed to the making of the compound but there could be that was well.
If any of you have experience this before or have any theories at to what this compound could be please let me know.