Physicists may have discovered a method to create element 120, the most massive element to date.

The third heaviest element in the universe has been created in a way that points the way to synthesizing the elusive element 120, the heaviest element in the periodic table.

“We were very shocked, very surprised and very relieved that we had not made the wrong choice in installing the equipment,” he said. Jacqueline Gates At the Lawrence Berkeley National Laboratory (LBNL), California.

She and her colleagues created the element, livermorium, by bombarding pieces of plutonium with beams of charged titanium atoms. Titanium has never been used in such experiments before because it’s hard to turn into a well-controlled beam and it takes millions or trillions of collisions to create just a few new atoms. But physicists think that the titanium beam is essential to making a hypothetical element 120, also known as unbinylium, which has 120 protons in its nucleus.

The researchers first evaporated a rare isotope of titanium in a special oven at 1,650°C (about 3,000°F). They then used microwaves to turn the hot titanium vapor into a charged beam, which they sent into a particle accelerator. When the beam reached about 10% of the speed of light and smashed into a plutonium target, a fragment of it hit a detector, where it detected a trace of two livermorium atoms.

As expected, each atom rapidly decayed into other elements. The stability of an atomic nucleus decreases as an atom’s mass increases. But the measurements were so precise that there’s only about a one in a trillion chance that the discovery was a statistical fluke, Gates says. The researchers announced their findings on July 23. Nuclear Structure 2024 Meeting at Argonne National Laboratory, Illinois.

Michael Thornessen The Michigan State University researcher says the experiment supports the feasibility of creating element 120. “We have to do the basic research and we have to go in the dark, so this is a really important and necessary experiment in that sense,” he says.

Toennesen says the creation of unbinylium will have profound implications for our understanding of the strong force, which determines whether heavy elements are stable. Studying unbinylium may also help us understand how exotic elements formed in the early universe.

The heaviest artificial element to date, element 118 (also known as oganesson), has two more protons than livermorium and was first synthesized in 2002. Since then, researchers have struggled to make atoms even heavier, because that requires colliding already-heavy elements with each other, which themselves tend to be unstable. “It’s really, really difficult work,” Thornesen says.

But the new experiment has LBNL researchers feeling optimistic: They plan to launch experiments aimed at creating element 120 in 2025 after replacing the plutonium target with the heavier element californium.

“I think we’re pretty close to knowing what to do,” Gates says, “and we have an opportunity to add new elements to the periodic table.” [is exciting]”…Very few people get that opportunity.”