2024/07/12 by Takashi Sakamoto, Kohei Suzuki, Sakamoto, Takashi +3
Engineering · Mathematics · Physics and Astronomy · #Atomic Physics (physics.atom-ph) #FOS: Physical sciences #Gas Dynamics and Kinetic Theory #Phase Equilibria and Thermodynamics #Quantum, superfluid, helium dynamics
paper · pdf · doi:10.48550/arxiv.2407.09108
openalex publication_date 2024/07/12 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
We demonstrate buffer gas cooling of carbon atoms to cryogenic temperatures. By employing pulsed two-photon excitation followed by vacuum ultraviolet fluorescence detection, we measured the arrival time distribution of the ablated carbon atoms to the detection volume at various helium buffer gas densities. The experimental data, corroborated by Monte Carlo simulations, reveal a rapid decrease in the local temperature of the carbon atom gas to approximately 10~K within tens of microseconds. The findings establish a major step towards novel research utilizing cold and ultracold carbon atoms.