lordmagnus
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Kryptonite!
Ha, I have a small 3 mm. crystal of kryptonite (a.k.a. Krypton DiFlouride). it's one of the few stable noble gas compounds. Some friends of mine made
some in their advanced chemistry classes in college. It involves the use of a radioactive isotope of kyrpton gas, and flourine, and high pressure, and
of course electricity! It's pale sickly green, and it glows ever so very faintly in total darkness, it's slightly radioactive (about twice that of the
materials in a smoke detector), and what ever you do, do not touch any, it's a very, very, very powerfull oxidizer to organic materials, it will burn
you immediatly. I keep it sealed in a clear glass flame pulled ampule. I am planning on exposing some Kodak tech pan film to it for various times, and
developng the film in P.O.T.A. which give like 20 levels of contrast, should give me some idea of the radiation field around it.
I\'ll kill a man in a fair fight, or if I think he is gonna start a fair fight, or if he\'s bothrn me allot, or if I am getin payed good, or probably
over a good woman.
-Jayne Cobb (Serenity) |
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Maja
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DO YOU REALLY HAVE krypton difluoride ?!
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IrC
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You should not post that online, Lex Luthor may be trying to find you now. You know how he hates Superman.
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halogen
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| Quote: | | ...it's slightly radioactive (about twice that of the materials in a smoke detector |
Americium 241?!
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neutrino
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Why did they use a radioactive isotope in their synthesis? Wouldn’t a normal isotope work just as well?
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YT2095
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everything I`ve ever read about it says nothing about isotopes being used at all?
in fact I can`t see an advantage in using an isotope for this synth over regular Kr36.
\"In a world full of wonders mankind has managed to invent boredom\" - Death
Twinkies don\'t have a shelf life. They have a half-life! -Caine (a friend of mine)
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unionised
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Never mind Lex Luthor, what are the safety authoritiess going to sayabout the use of an unsealed source and the fact that you now have an unlicensed
one?
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Marvin
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Beware, messing with isotopes may make all your hair fall out. 
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lordmagnus
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Please, this stuff is so mild in radioactivity, plus it's selaed in a glass ampule (do to the super oxidizing ability of organic matter), it's not
leaking anywhere, and the emisions are low. Anyway It's not like I taped it to myself to see if it's going to cause a radiation burn, you can get
uranium samples that are more dangerous, and are legal.
I\'ll kill a man in a fair fight, or if I think he is gonna start a fair fight, or if he\'s bothrn me allot, or if I am getin payed good, or probably
over a good woman.
-Jayne Cobb (Serenity) |
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Nick F
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But why was it made with a radioisotope?
Also, I'm not sure the authorities would count a glass ampoule as sealed. It probably needs to be sealed to their standards. And you would need a
license to make that legal to own. Uranium and thorium (metal, compounds and minerals) are the odd ones out when it comes to regulations. It's not
even legal to dismantle a smoke detector.
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unionised
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"do to the super oxidizing ability of organic matter"
Pardon?
"you can get uranium samples that are more dangerous"
Yes, but that's because even the government isn't stupid enough to outlaw rocks.
It's still an unlicensed source and, while someone was making it, it was an unsealed source.
Why on earth would anyone use anything as expensive as a radioisotope of krypton as part of a college experiment?
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YT2095
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I can understand the use of Isotopes in the case of PerBromate as it cannot be Made ordinarily, KBrO4 doesn`t exist unless it`s made as another
element isotope and then allowed to decay into KBrO4.
but Krypton gas????
Very Odd!
\"In a world full of wonders mankind has managed to invent boredom\" - Death
Twinkies don\'t have a shelf life. They have a half-life! -Caine (a friend of mine)
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woelen
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Yes, the reason for using a radio isotope of krypton also puzzles me. So, lordmagnus, if you have an answer to that, then we would all be very
pleased!
Anyway, nice to have some KrF2. Is this stuff really stable at room temperature? Aren't you afraid of this stuff, decomposing to Kr and F2,
pressurizing the ampoule, such that it breaks (esp. with F2, which also slowly may eat away the glass). If that happens, then you really are screwed,
with that gaseous radioactive Kr-isotope around (I don't think that small amount of F2 will be a serious problem, if this happens in a normal
ventilated room, given the small size of the sample). Even mg's of radio isotopes may kill you in the long run and do REAL harm.
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Nerro
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AFAIK Kr is always radioactive so long as it has not been purified into seperate isotopes. Quite a lot of radioactive isotopes exist which means the
gas is really always a little radioactive. It's always in the air anyway. The nuclear powers of the cold war used to measure the amounts of Kr in the
air to determine the amount of fissile material the opponent was making because it's a product of nuclear decay of uranium.
As long as it's in a more or less ventilated room I don't see this as any real problem. Even the tiny amount of F2 shouldnt kill you I think.
#261501 +(11351)- [X]
the \"bishop\" came to our church today
he was a fucken impostor
never once moved diagonally
courtesy of bash
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YT2095
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are you Sure that isn`t Radon they measured?
\"In a world full of wonders mankind has managed to invent boredom\" - Death
Twinkies don\'t have a shelf life. They have a half-life! -Caine (a friend of mine)
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Nerro
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Now that you mention it. Yes. Radon was what they measured. That pretty much sums up why I was mystified as to why people were tripping about
radioactive krypton
#261501 +(11351)- [X]
the \"bishop\" came to our church today
he was a fucken impostor
never once moved diagonally
courtesy of bash
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neutrino
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In other words, you have RnF<sub>2</sub>, not KrF<sub>2</sub>?
edit: fixed the formula
>What is Kr2?
Top secret, sorry. I've said too much already.
[Edited on 23-7-2006 by neutrino]
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Fleaker
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"In other words, you have RnF2, not Kr2? "
What is Kr2? ^
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pantone159
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| Quote: | Originally posted by Nerro
AFAIK Kr is always radioactive so long as it has not been purified into seperate isotopes.
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No, normal Kr is completely unradioactive.
| Quote: | Originally posted by Nerro
The nuclear powers of the cold war used to measure the amounts of Kr in the air to determine the amount of fissile material the opponent was making
because it's a product of nuclear decay of uranium. |
Yes, they did measure Kr-85, which is a radioactive U fission product. (Not really a normal decay product, though.) I think, in particular, it comes
out when reprocessing fuel rods, it is nearly impossible to keep the gas from entering the atmosphere. This allowed the amount of fuel rod
reprocesing going on to be tracked.
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indigofuzzy
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I did some quick research around the 'net, and everything I've read says that KrF2 is clear or white, not "sickly green." Also, nowhere did it mention
it being called Kryptonite, nor any need for radioactivity.
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Quince
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| Quote: | Originally posted by indigofuzzy
I did some quick research around the 'net, and everything I've read says that KrF2 is clear or white, not "sickly green." Also, nowhere did it mention
it being called Kryptonite, nor any need for radioactivity. |
Yep. lordmagnus is full of BS, as usual.
\"One of the surest signs of Conrad\'s genius is that women dislike his books.\" --George Orwell
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Drunkguy
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The guy who first made XeF2 lectured me at undergraduate level. Im sure u really needed to know that but... u mix equal volumes of Xe and F2 together
in the presence of UV light and get crystals.
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