Re: What is that silver layer at the bottom part of the arctube? « Reply #15 on: July 09, 2025, 11:24:37 AM » Author: dor123
Now this layer looks like as if it was the condensed halide, so why it don't disappear when the lamp warms up.
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	Re: What is that silver layer at the bottom part of the arctube? « Reply #16 on: July 09, 2025, 12:59:49 PM » Author: AngryHorse
There is indeed halides there, but the dark coat has got electrical spark etching in it, (Lichtenberg burning), so whatever it is it’s conductive, my HPI have the same tiny tracking lines in the black coat 🤔
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	Re: What is that silver layer at the bottom part of the arctube? « Reply #17 on: July 12, 2025, 10:37:37 AM » Author: dor123
Update: I've tried to run my 70W green thallium lamp upside down so that the black/silver layer would be upward, but it don't migrates downwards and moves at all. I hope this isn't a corrosion layer from the TlI or TlBr on the arctube, because this would essentially render this lamp EOL, because continue operating this lamp would result in arctube explosion.
« Last Edit: Today at 06:59:24 AM by dor123 »		Logged

I"m don't speak English well, and rely on online translating to write in this site.
Please forgive me if my choice of my words looks like offensive, while that isn't my intention.

I only working with the international date format (dd.mm.yyyy).

I lives in Israel, which is a 220-240V, 50hz country.

	Re: What is that silver layer at the bottom part of the arctube? « Reply #18 on: Today at 06:58:16 AM » Author: dor123
@James, @RRK, @Medved?
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I"m don't speak English well, and rely on online translating to write in this site.
Please forgive me if my choice of my words looks like offensive, while that isn't my intention.

I only working with the international date format (dd.mm.yyyy).

I lives in Israel, which is a 220-240V, 50hz country.