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Physicists Blow Up Gold With Giant Lasers, Accidentally Disprove Renowned Physics Model

Thursday July 24, 2025. 12:00 PM , from Slashdot
Physicists Blow Up Gold With Giant Lasers, Accidentally Disprove Renowned Physics Model
Physicists at SLAC National Accelerator Laboratory superheated gold to over 33,000F using giant lasers and X-rays -- far exceeding the limits set by long-standing physics models. From the report: In an experiment presented today in Nature, researchers, for the first time ever, demonstrated a way to directly measure the temperature of matter in extreme states, or conditions with intensely high temperatures, pressures, or densities. Using the new technique, scientists succeeded in capturing gold at a temperature far beyond its boiling point -- a procedure called superheating -- at which point the common metal existed in a strange limbo between solid and liquid. The results suggest that, under the right conditions, gold may have no superheating limit. If true, this could have a wide range of applications across spaceflight, astrophysics, or nuclear chemistry, according to the researchers.

The study is based on a two-pronged experiment. First, the scientists used a laser to superheat a sample of gold, suppressing the metal's natural tendency to expand when heated. Next, they used ultrabright X-rays to zap the gold samples, which scattered off the surface of the gold. By calculating the distortions in the X-ray's frequency after colliding with the gold particles, the team locked down the speed and temperature of the atoms.

The experimental result seemingly refutes a well-established theory in physics, which states that structures like gold can't be heated more than three times their boiling point, 1,948 degrees Fahrenheit (1,064 degrees Celsius). Beyond those temperatures, superheated gold is supposed to reach the so-called 'entropy catastrophe' -- or, in more colloquial terms, the heated gold should've blown up. The researchers themselves didn't expect to surpass that limit. The new result disproves the conventional theory, but it does so in a big way by far overshooting the theoretical prediction, showing that it's possible to heat gold up to a jaw-dropping 33,740 degrees F (18,726 degrees C). The team is already applying the technique to other materials, such as silver and iron, which they happily report produced some promising data.

Read more of this story at Slashdot.
https://science.slashdot.org/story/25/07/24/0116257/physicists-blow-up-gold-with-giant-lasers-accide...

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