Zuthal

@Zuthal

he/him

zuthal/zuzu - 27 - 🇩🇪
queer weird mlem honse
male but low energy
audhd
🔞 a lot of horny posting with lots of kinks 🔞
politically vaguely bottom leftist
believes in the separation between fiction and reality
big huge nerd for space, biotech, stem and scifi stuff in general
player of nerdy games
also hunter of monsters
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please ask me questions, both nerdy and horny welcome

Zuthal @Zuthal2/21/2024, 8:08 PM

walking mirage @atomicthumbs

walking mirage @atomicthumbs7/11/2023, 12:24 AM

the datasheet of this Osram Xeradex excimer lamp says not to touch the lamp while it's in operation, but it's not necessarily because touching the lamp would damage it, or because it gets hot.

the lamp emits 172nm vacuum ultraviolet radiation, shorter-wave and higher-energy than even the UVC emitted by germicidal lamps and EEPROM erasers. it's called "vacuum ultraviolet" because it's absorbed by the oxygen in air, making ozone and excited oxygen. as long as you have ventilation, you can look at a VUV lamp all day with no ill effects. the light emitted in the picture is coming from fluorescence of the lamp envelope, ionization of the air, or both (i'm not sure).

but if there's no air between the lamp and your skin...

#excimer lamps #radiation hazards #poison light #mutagens #terrifying ebay photos #ultraviolet #vacuum uv #vacuum ultraviolet #radiation

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in reply to @atomicthumbs's post:

Michaela Sue @beige-alert7/11/2023, 2:24 AM

"Do not operate the lamp in corrosive atmospheres (such as chlorine or fluorine gas)."

@darryl @darryl11/7/2023, 2:17 AM

yeah but there’s lots of things you shouldn’t do in chlorine or fluorine atmospheres???

walking mirage @atomicthumbs11/7/2023, 2:20 AM

oh yeah? name them

@darryl @darryl11/7/2023, 5:44 AM

as soon as my throat stops burning I will

Maff @maff11/7/2023, 11:42 AM

i’m so curious as to why this lamp exists and what its use-case is.
Also frankly I want to know what would happen if you were exposed directly to the VUV light, knowing what UV-C does.

Mr. Encyclopedia @mrencyclopedia2/21/2024, 8:06 PM

172nm ultraviolet light is in the middle of UV-C, but not quite 121nm, which is considered the boundary for ionizing radiation. Still, the way this light interacts with oxygen is much like how ionizing radiation interacts with atoms. When you get radiation sickness, it's because atoms in your body are got ionized and those ions are chemically damaging everything around them. You don't want excited oxygen atoms or ozone in your body.

Getting exposed to this light would be similar enough to getting exposed to x-rays or gamma rays, except this light won't penetrate you the way those shorter wavelengths will.

Zuthal @Zuthal6/14/2024, 2:34 PM

Which means you would probably need much more exposure than even with lower-energy UV to get substantial damage, since it will likely be stopped still in the dead upper layers of your skin. That is a weird thing with ionising radiation, where between vacuum UV and soft xrays, you get much, much lower penetration depths in matter than on either side.

Zuthal @Zuthal2/21/2024, 8:19 PM

Oh hey, that's the f̴͕̍o̴͙̕ȑ̴̯b̵̺͐ĩ̷͙d̸͙́ḍ̴́ë̵͈́n̶̝͘ ̵̹́l̶͓͗ǐ̷͍g̸̜͆h̸͜͝t̴̹͊ that the arch-mages use to produce the sand-that-thinks