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Rapid heating of a strongly coupled plasma at the solid-liquid phase transition



M J. Jensen, T Hasegawa, John Bollinger, Daniel H. Dubin


Between 104 and 10u6 A9Be^+ ions were trapped in a Penning trap and laser-cooled to siml K, where they formed a crystalline plasma. We measured the ion temperature as a function of time after turning off the laser-cooling and observed a rapid temperature increase as the plasma undergoes the solid-liquid phase transition at T=10-mK Gamma sim). We present evidence that this rapid heating is due to a sudden release of energy from weakly cooled degrees of freedom involving the cyclotron motion of trapped impurity ions.
Physical Review Letters


laser cooling, Penning trap, phase transition, strongly coupled plasma


Jensen, M. , Hasegawa, T. , Bollinger, J. and Dubin, D. (2005), Rapid heating of a strongly coupled plasma at the solid-liquid phase transition, Physical Review Letters (Accessed April 16, 2024)
Created January 20, 2005, Updated October 12, 2021