Scientists working at CERN have successfully transformed lead into gold during experiments conducted at the Large Hadron Collider, located along the border between France and Switzerland.
The breakthrough was not an attempt to produce valuable metals but occurred during research linked to the ALICE experiment, where scientists study conditions similar to those believed to exist shortly after the Big Bang.
Researchers reported that only an extremely tiny quantity of gold was created — approximately 29 trillionths of a gram — making the achievement scientifically important but commercially insignificant.
The process works because elements are defined by the number of protons inside their atomic nuclei. Lead contains three more protons than gold, meaning that removing exactly three protons from a lead atom effectively converts it into gold.
To achieve this, scientists accelerated lead nuclei to nearly the speed of light inside the collider. When these nuclei passed very close to each other without direct collision, they generated intense electromagnetic fields strong enough to disturb atomic structures.
In rare cases, the electromagnetic interaction stripped away three protons, producing gold nuclei. Losing two protons created mercury, while losing one proton resulted in thallium, demonstrating how small nuclear changes can form entirely different elements.
Scientists estimate that roughly 89,000 gold nuclei are produced every second during lead beam operations, although the amount remains far too small to collect or use in any practical way.
Interestingly, researchers do not directly observe the gold atoms themselves. Instead, specialized detectors called zero-degree calorimeters measure the removed protons, allowing scientists to determine which elements were formed during the experiment.
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