Eighty years ago, at 5:29 a.m. on July 16, 1945, a momentous and devastating event unfolded in the New Mexico desert. That morning, the U.S. Army conducted the Trinity test—the world’s first detonation of a nuclear bomb—using a plutonium-based implosion device nicknamed “the Gadget.” This unprecedented explosion marked the dawn of the nuclear age and altered the course of warfare permanently.
The Physical Impact of the Explosion
The bomb unleashed energy equivalent to 21 kilotons of TNT, obliterating the 30-meter (98-foot) test tower and miles of copper wiring used to monitor the blast. The intense heat and pressure fused the tower remnants, copper wires, asphalt, and desert sand into a green, glass-like material that came to be known as trinitite—a newly formed mineral born from atomic fire.
Years later, scientists found an extraordinary surprise inside a piece of that trinitite: a quasicrystal, a previously unimaginable form of matter with atomic arrangements unlike those in conventional crystals.
Extreme Environments and the Formation of Quasicrystals
Quasicrystals form under conditions of extreme pressure and heat—environments rarely found on Earth, explained geophysicist Terry Wallace of Los Alamos National Laboratory in a 2021 interview. Such conditions typically occur only during highly energetic events, like nuclear explosions.
Unlike traditional crystals, which have repeating atomic patterns, quasicrystals feature structured yet non-repeating atomic arrangements. When the concept of quasicrystals emerged in 1984, scientists were skeptical. Crystals were thought to exist only as either ordered or disordered structures—nothing in between. But this assumption was shattered when quasicrystals were later synthesized in laboratories and discovered in nature, including inside meteorites formed under extreme thermodynamic shocks.
The Search for Quasicrystals in Red Trinitite
With that knowledge, geologist Luca Bindi of the University of Florence and his team turned their attention to trinitite. However, they didn’t examine the common green variety. Knowing that quasicrystals often incorporate metals, they focused instead on red trinitite—a rarer form colored by vaporized copper wires fused into the mineral during the explosion.
Using advanced methods like scanning electron microscopy and X-ray diffraction, the researchers studied six small samples of red trinitite. In one, they found what they were looking for: a microscopic 20-sided grain composed of silicon, copper, calcium, and iron—exhibiting five-fold rotational symmetry, something impossible in ordinary crystals. This quasicrystal was a byproduct of nuclear devastation, born unintentionally during the Trinity test.
This quasicrystal is stunning in its complexity, though we still don’t understand exactly how it formed,” Wallace remarked in 2021, when the team published their findings. “But eventually, someone will uncover a thermodynamic explanation—and that insight may deepen our understanding of nuclear blasts.
New Avenues for Quasicrystal Science
This discovery represents the oldest man-made quasicrystal on record and points to other possible natural mechanisms of formation. For instance, lightning strikes that create fulgurites or high-velocity meteorite impacts might also generate such exotic structures.
The implications go beyond scientific curiosity. Analyzing quasicrystals formed in nuclear detonations could enhance nuclear forensics, helping experts detect and interpret illicit nuclear tests. Unlike radioactive debris, which decays over time, quasicrystals could offer a permanent signature of such events.
To evaluate another nation’s nuclear capabilities, we need a detailed understanding of their test history,” Wallace noted. “While we usually rely on radioactive gases and particles, those traces fade. But quasicrystals formed during a nuclear blast can last forever—and may reveal entirely new information.
Read the original article on: Science Alert
Read more: DeepMind Has Taught an AI to Control Nuclear Fusion