我国科研团队首次直接证实量子力学预言的米格达尔效应

Core Insights - The research team from the University of Chinese Academy of Sciences has directly observed the Migdal effect, a phenomenon predicted by quantum mechanics in 1939, which supports breakthroughs in light dark matter detection [1][2] Group 1: Discovery and Significance - The Migdal effect involves the transfer of energy from a recoiling atomic nucleus to outer electrons during collisions with neutral particles, allowing electrons to escape atomic binding [1] - This discovery is significant as it addresses the long-standing lack of empirical support for the Migdal effect, which has been a theoretical assumption for over 80 years [1] Group 2: Technological Advancements - The research team developed a highly sensitive detection device combining a micro-structured gas detector with a pixel readout chip, functioning like a "camera" to capture the electron release process during single atom movements [2] - The device successfully differentiates "Migdal events" from background noise such as gamma rays and cosmic rays, marking the first direct confirmation of the Migdal effect [2] Group 3: Future Plans - The team plans to further optimize the detector's performance and expand observations of the Migdal effect across different elements, aiming to provide data support for the detection of lighter dark matter particles [2]