Accelerated electron thermometer: observation of 1D Planck radiation

Morgan H. Lynch, Evgenii Ievlev, Michael R. R. Good

Progress of Theoretical and Experimental Physics, 2023

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DOI 10.1093/ptep/ptad157
Data confidence 70 medium
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Abstract

Abstract We report on the observation of thermal photons from an accelerated electron via examination of radiative beta decay of free neutrons measured by the RDK II collaboration. The emitted photon spectrum is shown to corroborate a thermal distribution consistent with the dynamical Casimir effect. Supported by a robust chi-squared statistic, we find the photons reside in a 1D Planck spectrum with a temperature predicted by the moving mirror model. Subject Indices: B50 (Electromagnetic processes and properties), D29 (Nuclear decays and radioactivities (including fission)), and E76 (Quantum field theory on curved space)