Researchers use laser to superfreeze antimatter, the mysterious mirror version of ordinary matter
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Cool new Canadian-built laser will help scientists probe antimatter mysteries
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For the first time, physicists have used lasers to deep-freeze antimatter.
In a new experiment, an ultraviolet laser quelled the thermal jitters of antihydrogen atoms, chilling the antiatoms to just above absolute zero. This technique for slowing down antimatter the oppositely charged counterpart to normal matter could help scientists build the first antimatter molecules. Taming unruly antimatter with laser light may also allow physicists to measure the properties of antiatoms much more precisely, researchers report in the April 1
Nature. Comparing antiatoms with normal atoms could test some fundamental symmetries of the universe.
SN: 3/8/21). But it’s been hard to laser-cool antimatter because, for one thing, “it’s really difficult to make antimatter,” says Takamasa Momose, a spectroscopist at the University of British Columbia in Vancouver.