Comment by fragmede
4 days ago
Why is that? I must have missed the episode of black mirror you watched that would make that a bad thing.
4 days ago
Why is that? I must have missed the episode of black mirror you watched that would make that a bad thing.
Antimatter is more of a Star Trek (and Revelation Space and a few others) issue than a Black Mirror episode.
I am far from a domain expert, I only know of four current and speculated uses for antimatter: energy storage, inducing nuclear reactions, medical imaging, and one specific tumour removal method.
For the first one, antimatter has about 1000x the energy density of fission, but also unlike a fission bomb all of it reacts (with an equal mass of normal matter), which means 1 gram of the stuff is a bigger boom than Fat Man and Little Boy combined.
Fortunately, "15000 antihydrogen atoms" is a factor of 4e19 away from 1 gram, and even if it wasn't we'd probably have to fuse the antihydrogen into antilithium to hold that much in a not completely absurd storage system.
Inducing nuclear reactions might make for some interesting propulsion systems, or might make atomic weapon proliferation even harder to prevent; that's expected at around 10^18 (the microgram level), which is still 1e14 more than announced by CERN — if it works, this use is hypothetical because current production is so much less than that: https://en.wikipedia.org/wiki/Antimatter-catalyzed_nuclear_p...
Medical imaging is already done with positron sources (doesn't need complete antihydrogen atoms), and antiproton beam therapy doesn't need the antiprotons to be turned into antihydrogen at any point: https://home.cern/science/experiments/ace etc.
Well what is the most obvious application of a highly volatile energy dense substance?
This substance can basically only do two things.
1) whatever ordinary hydrogen can
2) explode violently on contact with matter
Sure it's interesting to test 1) from a physics research point of view, but 2) is the only practical application that I know of.
As a luddite, when I get in to my car to drive to work, I harness the power of several hundred violent explosions per minute in order for my non-science fiction car to get to work. If I had a homelab sized source of anti-matter violent explosions, youtube university in this hypothetical universe could help me harness it into something that generates electricity or something fun and useful, and not for killing people.
If your car suffers a catastrophic exothermic event with its fuel, that looks like a car fire.
If the same energy explodes as antimatter, to the extent that it is not radiation shielded what you get is a pulse of high-energy ionising radiation*; while to the extent that it is radiation shielded, it looks like order-of as many kg of TNT as the number of kWh stored, give or take.
* with a note that 10 joules of absorbed energy per kg of body mass is "if you're lucky you will fall into a coma and die in about a week, if you're unlucky you'll be conscious", and that 1 litre of ICE fuel ~= 10 kWh = 36 megajoules.
Propulsion with antimatter drives is another application. That’s not consumer-facing though.