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by akshatjiwan 231 days ago
Researchers have reported neutron detection but these results have not been reproduced and some scientists have attributed this detection to 'noise'. Bubbles are tiny they have very small amount of gas in them so detecting that is not exactly straightforward... I think

for example a in a 1um radius bubble the total mass of gas would be ~ 10^-18kg.

Personally I doubt fusion occurs inside bubbles. Even if we take the highest reported temp 30000K that's way below what's required for fusion.

Also bubble literature is full of fantastic claims—one that comes to mind is assertion that pressures of around 10Gpa can be generated which seems highly improbable because that's likely to induce phase change in the fluid.

However it's quite possible that I'm wrong. Because bubble science keeps on throwing new surprises.

1 comments

Are you agreeing or disagreeing with it being trivial to check if theres fusion?

> However it's quite possible that I'm wrong. Because bubble science keeps on throwing new surprises.

Ultimately that's my assertion. No need for exaggerated/optimistic claims when something interesting turns up about it on a regular basis.

I'm disagreeing that it's trivial to check for fusion because of low mass of gas inside the bubbles and suggesting that it's unlikely that fusion would ever happen in a bubble because temperatures required for fusion are way higher than bubble cavitation temperatures.

Do you have any ideas on how detection can be made in a bubble radius of say 100um?

In laser fusion experiments the pellet size is in mm range and it's completely filled with solid/liquid hydrogen to achive high particle density.Thats not possible in a bubble.

The thing is even for something as well studied as sonoluminescence there is no scientific consensus. Literature is all over the place when it comes to bubble gas temperature during cavitation.

Lots of arguments and debates are ongoing in the community. I think that's what happened with fusion story.