Abstract
We have designed an atomic beam experiment to be performed at low temperature in order to study the scattering of helium atoms at the liquid surface. This work has been partly stimulated by the theoretical papers of Anderson1 and Hyman et al.2 as well as by the experimental work of Johnston and King3. Anderson pointed out that the spectrum of atoms evaporating from the liquid should show a sharp increase in intensity at an energy corresponding to the difference between the atomic binding energy L and the roton minimum Δ. This prediction is made by assuming that inelastic processes at the surface play a minor role in evaporation.
Work supported in part by the National Science Foundation.
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References
P.W. Anderson, Phys. Lett. 29A, 563 (1968).
D.S. Hyman, M.O. Scully, and A. Widom, Phys. Rev. 186, 231 (1969).
W.D. Johnston, Jr. and J.G. King, Phys. Rev. Lett. 16, 1191 (1966).
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H.M. Guo, D.O. Edwards, R.E. Sarwinski, and J.T. Tough, Phys. Rev. Lett. 27, 1259 (1971).
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Eckardt, J., Edwards, D.O., Gasparini, F.M., Shen, S.Y. (1974). The Scattering of Low-Energy Helium Atoms at the Surface of Liquid Helium. In: Timmerhaus, K.D., O’Sullivan, W.J., Hammel, E.F. (eds) Low Temperature Physics-LT 13. Springer, Boston, MA. https://doi.org/10.1007/978-1-4684-7864-8_107
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DOI: https://doi.org/10.1007/978-1-4684-7864-8_107
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