this post was submitted on 20 Apr 2025
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[–] context@hexbear.net 46 points 2 months ago (15 children)

oh good, between this and hypersonic suborbital kinetic bombardment, we're really starting to see some of the weapons ww3 will be fought with! what fun!

The hydrogen bomb can cause extended thermal damage because the white-hot fireball it produces – sufficient to melt aluminium alloys – lasts much longer than TNT’s fleeting 0.12-second flash, according to the paper.

the device uses a magnesium-based solid-state hydrogen storage material. This material – a silvery powder known as magnesium hydride – stores considerably more hydrogen than a pressurised tank. It was originally developed to bring the gas to off-grid areas, where it could power fuel cells for clean electricity and heat.

The chain reaction begins when detonation shock waves fracture magnesium hydride into micron-scale particles, exposing fresh surfaces, according to the study. Thermal decomposition rapidly releases hydrogen gas, which mixes with ambient air. Upon reaching the lower explosive limit, the mixture ignites, triggering exothermic combustion. This liberated heat further propagates magnesium hydride decomposition, creating a self-sustaining loop until fuel exhaustion – a synergistic cascading of mechanical fracturing, hydrogen release, and thermal feedback, according to the paper.

doomer fuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuck

[–] plinky@hexbear.net 25 points 2 months ago* (last edited 2 months ago) (4 children)

it's not much worse than usual explosives shrug-outta-hecks somewhere around better ethylene oxide or some shit, at the worst.

it's all journalism over-hyping (with hydrogen bomb naming), there are myriads of explosives which are just too expensive to use (either due to corrosiveness, instability on decade scales, difficulty in industrial handling etc)

[–] context@hexbear.net 16 points 2 months ago (1 children)

it's not much worse than usual explosives

firebombs and oreshnik aren't much worse than usual explosives shrug-outta-hecks

it's all journalism over-hyping (with hydrogen bomb naming)

that's what i was expecting at first.

Until recently, magnesium hydride could only be produced in laboratories at the pace of a few grams per day. This is because binding hydrogen with magnesium requires high temperatures and pressure. Accidental exposure to the air during the manufacturing process can lead to deadly explosions. Earlier this year, China launched a magnesium hydride plant in the northwestern province of Shaanxi that can produce a staggering 150 tonnes of the material per year. Developed by the Dalian Institute of Chemical Physics, the plant has achieved low production costs using a “one-pot synthesis” method, according to the Chinese Academy of Sciences.

if this last part is true, then they've overcome the industrial handling hurdle and can produce it at scale. i dunno if this one is just over-hyping.

[–] plinky@hexbear.net 10 points 2 months ago (1 children)

it was produced at that scale cause it has (had?) fuck all uses tbh, aluminium hydride is kinda samey but has very chemically friendly partners for use in synthesis, so is produced

[–] context@hexbear.net 6 points 2 months ago (1 children)

so you're saying it will be relatively simple for other countries to do the same thing?

[–] plinky@hexbear.net 12 points 2 months ago* (last edited 2 months ago)

if it's not overhyping usefulness and scale, i suspect so, they do direct synthesis under pressure seems like, so not very exotic, just wildly expensive.

i think their diamond production is much more poggers, cause it's harder to do and in the west diamond lobby do be existing

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