Optical Properties of 1P State Electron Bubbles in Liquid Helium-4

Ghosh, Ambarish and Maris, Humphrey J. (2012) Optical Properties of 1P State Electron Bubbles in Liquid Helium-4. In: International Conference on Low Temperature Physics (LT26), AUG 10-17, 2011, Beijing, China.

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Abstract

When an electron is injected into liquid helium, it forces open a cavity that is free of helium atoms (an electron bubble). If the electron is in the ground 1S state, this bubble is spherical. By optical pumping it is possible to excite a significant fraction of the electron bubbles to the 1P state; the bubbles then lose spherical symmetry. We present calculations of the energies of photons that are needed to excite these 1P bubbles to higher energy states (1D and 2S) and the matrix elements for these transitions. Measurement of these transition energies would provide detailed information about the shape of the 1P bubbles.

Item Type:	Conference Proceedings
Series.:	Journal of Physics Conference Series
Publisher:	IOP PUBLISHING LTD
Additional Information:	Copyright for this article belongs the IOP Publishing ltd,ENGLAND
Keywords:	HELIUM; ABSORPTION; SPECTRUM
Department/Centre:	Division of Interdisciplinary Sciences > Centre for Nano Science and Engineering
Date Deposited:	02 Apr 2013 10:56
Last Modified:	02 Apr 2013 10:59
URI:	http://eprints.iisc.ac.in/id/eprint/46255

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