--- Log opened Thu Aug 17 00:00:31 2023
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15:25 < fenn> moderately rare elements for sale https://www.rwmmint.com/collections/all?sort_by=price-descending
15:28 < fenn> not necessarily the best deal but it's in a relatively uniform format
15:30 < CNOT> bismuth is maybe more common, but maybe one of the most beautiful rusts there are
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15:34 < CNOT> and 99.5% of all the bismuth atoms were forged when neutron stars collide with each others, ie from uncontrolled decompressing neutronium 
15:34 < CNOT> so it has a cool origin story as well
15:36 < hprmbridge> alonzoc> Really, didn't know that
15:36 < fenn> most heavy elements are like that
15:37 < CNOT> yeah, star dust from exploding supernova only tells part of the story
15:38 < hprmbridge> alonzoc> Now that *is* cool
15:38 < CNOT> https://en.wikipedia.org/wiki/Nucleosynthesis ← ← this article has a table with origin stories
15:38 < hprmbridge> alonzoc> I had just assumed it was all supernova stuff
15:40 < hprmbridge> alonzoc> Boron and beryllium have interesting origins as well
15:40 < fenn> cosmic ray spallation - i didn't know about this mechanism
15:41  * fenn dumps some in the washing machine
15:41 < fenn> maybe boron is the real white gold
16:14 < L29Ah> hmm where can i get some neutrons for cheap
16:15 < L29Ah> preferably w/o U-235 and other exotic nuclei
16:15 < hprmbridge> alonzoc> Well I gave a ton, it's just mixed up with a bunch of protons and electrons
16:15 < L29Ah> nono only free neutrons accepted
16:16 < hprmbridge> alonzoc> I can give you a skip and you can sort through for the neutrons yourself if you like
16:16 < hprmbridge> alonzoc> They're free I'm not charging
16:17 < hprmbridge> alonzoc> But in all seriousness something like a simple fusor might be a viable source
16:19 < fenn> "Neutrons are produced when alpha particles hit any of several light isotopes including isotopes of beryllium, carbon, or oxygen. Thus, one can make a neutron source by mixing an alpha-emitter such as radium, polonium, or americium with a low-atomic-weight isotope, usually by blending powders of the two materials. Alpha neutron sources typically produce ~10^6–10^8 neutrons per second. An
16:19 < fenn> alpha-beryllium neutron source may produce about 30 neutrons per 10^6 alpha particles."
16:19 < hprmbridge> alonzoc> People have achieved noticeable neutron radiation out of a simple farnsworth fusor iirc
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18:37 < hprmbridge> kanzure> https://infoproc.blogspot.com/2017/05/contingency-history-and-atomic-bomb.html?m=1
19:19 < muurkha> alonzoc: how do you quantify "noticeable"?
19:20 < muurkha> are we talking about Bq, kBq, MBq, GBq, TBq, EBq?
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23:45 < fenn> "LK-99 isn’t a superconductor" https://www.nature.com/articles/d41586-023-02585-7
23:45 < fenn> "Jain, a copper-sulfide expert, remembered 104ºC as the temperature at which Cu2S undergoes a phase transition. Below that temperature, the resistivity of air-exposed Cu2S drops dramatically"
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--- Log closed Fri Aug 18 00:00:32 2023