The quantum second virial coefficient of 3He at low density in the temperature range 0.005–10 K
| Autor: | B. R. Joudeh, Mustafa M. Hawamdeh, Humam B. Ghassib, A. S. Sandouqa, O.T. Al-Obeidat |
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| Rok vydání: | 2017 |
| Předmět: |
Physics
Condensed matter physics Vapor pressure General Physics and Astronomy Thermodynamics 02 engineering and technology Atmospheric temperature range 021001 nanoscience & nanotechnology 01 natural sciences Virial coefficient 0103 physical sciences Compressibility Low density 010306 general physics 0210 nano-technology Quantum |
| Zdroj: | Canadian Journal of Physics. 95:1208-1214 |
| ISSN: | 1208-6045 0008-4204 |
| DOI: | 10.1139/cjp-2016-0907 |
| Popis: | The quantum second virial coefficient Bq for 3He is calculated from first principles at low density in the temperature range 0.005–10 K. By “first principles”, it is meant that the many-body phase shifts are first determined within the Galitskii–Migdal–Feynman formalism; they are then plugged into the Beth–Uhlenbeck formula for Bq. A positive Bq corresponds to an overall repulsive interaction; a negative Bq represents an overall attractive interaction. The s-wave scattering length a0 is calculated quite accurately as a function of the temperature T. The effect of the (low-density) medium on Bq is studied. Bq is then used to determine the volume of 3He at the saturation curve. The compressibility is evaluated as a measure of the non-ideality of the system. |
| Databáze: | OpenAIRE |
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