Radio Whisper of Dark Matter: A New Axion Detector ⚡ экспресс
Dark matter might consist of ultra-light particles called axions. Scientists have developed a detector made of semiconductor layers, resembling a tunable antenna: as an axion passes through it, it transforms into faint light that can be detected. This will allow us to 'see' the invisible scaffolding of the Universe and come closer to solving the mystery of dark matter. Will such an antenna be able to pick up a signal from the cosmic web?
The new detector is a highly sensitive 'musical instrument.' Its heart is a layered material in a strong magnetic field. The layers form a resonator that amplifies the signal, much like the body of a cello amplifies the sound of a string. When an axion passes through the layers, the magnetic field makes it 'sing'—emitting a photon with a frequency depending on the axion's mass. To tune to this frequency, you simply tilt the device—no internal moving parts, like changing channels on an old TV. This method, akin to spectroscopy, allows scanning a wide range of masses in search of the elusive dark matter signal. Trillions of axions pass through the device every second—their energy could boil a kettle, but they barely interact. Only a few are caught, recorded by a supersensitive detector.
🎯 The name 'axion' was a joke by Nobel laureate [scientist:Frank Wilczek]Frank Wilczek[/scientist]: he used the brand of Axion laundry detergent because the new particle 'cleaned up' the theory's inconsistencies.