Electron Bubbles in Liquid Helium

Details Electron Bubbles in Liquid Helium Electron Bubbles in Liquid Helium

2003-12-03

arxiv.org/abs/quant-ph/0312037v1

Physics

Quantum Physics

4 pages, 1 figure

Scientific paper

When an electron (or positronium atom) is injected into liquid helium with nearly zero energy, a bubble quickly forms around it. This phenomenon (which also occurs in liquid hydrogen, liquid neon and possibly in solid helium) lowers the mobility of the electron to a value similar to that for a positive ion. We estimate the radius of the bubble at zero pressure and temperature based on the zero point energy of the electron. If the liquid is held in a state of negative pressure, the bubble will expand beyond the radius at zero pressure. We also estimate the negative pressure such that a bubble once formed will grow without limit.

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