DESIREE&Friends 10 The smallest ice cube

by Prof. Klavs Hansen (Center for Joint Quantum Studies and Department of Physics, School of Science, Tianjin University, China)

Thursday 21 May 2026, 13:00 → 13:45 Europe/Stockholm

FB54 (AlbaNova Main Building)

Measured evaporative decay of mixed heavy and light water clusters show a remarkable scaling with the deuterium mole fraction above cluster size 8, including across the well-known shell closing at N = 21 with values consistent with macroscopic surfaces. Helmholtz free energy differences of competing channels derived from these distributions take the simplest possible form of a single energy parameter and the deuterium-protium mixing entropy. The results rule out any H-H interaction above the sub-meV scale. Comparison with similar experiments on partially deuterated ammonia clusters emphasize the special properties of water.

For a COMPLETE Abstract, follow the link below.

 

AbstractHansen.pdf