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Upper bounds on the highest phonon frequency and superconducting temperature from fundamental physical constants

Autor: Trachenko, K., Monserrat, B., Hutcheon, M., Pickard, C. J.

Fundamental physical constants govern key effects in high-energy particle physics and astrophysics, including the stability of particles, nuclear reactions, formation and evolution of stars, synthesis of heavy nuclei and emergence of stable molecular

Externí odkaz: http://arxiv.org/abs/2406.08129

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A Zero-Gravity Instrument to Study Low Velocity Collisions of Fragile Particles at Low Temperatures

Autor: Salter, D. M., Heißelmann, D., Chaparro, G., van der Wolk, G., Reißaus, P., Borst, A. G., Dawson, R. W., de Kuyper, E., Drinkwater, G., Gebauer, K., Hutcheon, M., Linnartz, H., Molster, F. J., Stoll, B., van der Tuijn, P. C., Fraser, H. J., Blum, J.

We discuss the design, operation, and performance of a vacuum setup constructed for use in zero (or reduced) gravity conditions to initiate collisions of fragile millimeter-sized particles at low velocity and temperature. Such particles are typically

Externí odkaz: http://arxiv.org/abs/0906.3977

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