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Northwestern University positron trapping experiment
Overview
Physicists at Northwestern University, led by Gerald Gabrielse, have successfully demonstrated the first single-positron quantum cyclotron. This breakthrough allows for the isolation and manipulation of a single positron—the antimatter counterpart to an electron—for approximately one month.
To prevent the particle from annihilating upon contact with ordinary matter, the team utilized a Penning trap within a 5.6-tesla superconducting solenoid to suspend the positron in a near-perfect vacuum. By employing a dilution refrigerator to cool the environment to roughly 300 millikelvin, researchers reduced the particle's motion enough to observe and govern quantum state transitions between its lowest energy levels. This setup enables a non-destructive reading technique to track the particle's quantum states, allowing it to behave like an artificial atom.
Published in Physical Review Letters, the research provides a method to test CPT symmetry, a principle of the Standard Model stating that physical laws remain unchanged if charge, parity, and time are simultaneously reversed. Specifically, the experiment seeks to determine if the positron's magnetic moment is equal in magnitude and opposite in sign to that of the electron. Such precise comparisons aim to probe physics beyond the Standard Model and investigate why the visible universe is composed primarily of matter rather than an equal mix of matter and antimatter.
Entities
Gerald Gabrielse · Northwestern University · Physical Review Letters · Standard Model · Thomas Myers
Claims
What the coverage asserts, and how many sources carry each claim.
- [● 3 SOURCES] Physicists at Northwestern University trapped a single positron for several months. knowridge.com · www.zmescience.com · www.wired.com
- [● 3 SOURCES] The team used electric and magnetic fields to suspend the positron in a vacuum. knowridge.com · www.zmescience.com · www.wired.com
- [● 2 SOURCES] The research was published in Physical Review Letters. knowridge.com · www.wired.com
- [● 2 SOURCES] The positron was cooled to temperatures near absolute zero. www.zmescience.com · www.wired.com
- [● 2 SOURCES] The researchers developed a device called a single-positron quantum cyclotron. knowridge.com · www.wired.com
- [● 2 SOURCES] Gerald Gabrielse led the research team. www.zmescience.com · www.wired.com
- [○ 1 SOURCE] The experiment allows for precise comparisons between electrons and positrons. knowridge.com
- [○ 1 SOURCE] The Standard Model predicts a close symmetry between matter and antimatter. knowridge.com
Timeline
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[TECHNOLOGY] 7 sourcesNorthwestern University physicists develop first single-positron quantum cyclotron
Northwestern University researchers have created the first single-positron quantum cyclotron, enabling high-precision tests of matter-antimatter symmetry and the Standard Model.
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[TECHNOLOGY] 8 sourcesNorthwestern University physicists trap single antimatter particle
Northwestern University researchers trapped a single positron for months using electromagnetic fields and extreme cooling, enabling precise studies of antimatter to test fundamental physics theories.
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[TECHNOLOGY] 6 sourcesNorthwestern University physicists trap single positron for months
Northwestern University physicists successfully trapped a single positron in a Penning trap for months, allowing for precise control of its quantum states to study the fundamental differences between matter and
Sources
aeiou.pt · das-wissen.de · digitaljournal.com · donanimgunlugu.com · es.gizmodo.com · freerepublic.com · knowridge.com · lacronicadebadajoz.elperiodicoextremadura.com · lagacetaonline.com.ar · larepublica.pe · lasemainedansleboulonnais.fr · mormonhistoricsites.org · notiulti.com · nypost.com · pulptastic.com · qubit.hu · sci.news · thepatent.news · wired.com · wwwhatsnew.com · zmescience.com
This summary has been updated 1 time: see revision history