Physicists discover elbow-like feature in mean logarithmic mass spectrum of ultra-high-energy cosmic rays

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Physicists discover elbow-like feature in mean logarithmic mass spectrum of ultra-high-energy cosmic rays

Researchers at the Large High Altitude Air Shower Observatory (LHAASO) have accurately measured the cosmic ray all-particle energy spectrum and the mean logarithmic mass in the range of 0.3–30 peta-electronvolts (PeV). They have also discovered an "elbow" feature in the mean logarithmic mass spectrum of cosmic rays.