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Enhanced He-alpha emission from "smoked" Ti targets irradiated with 400nm, 45 fs laser pulses

Khattak, F.Y., Clarke, R.J., Divall, E.J., Edwards, M., Foster, P.S., Hooker, C.J., Langley, A.J., du Sert Percie, O.A.M.B., Spindloe, C., Tallents, G. (orcid.org/0000-0002-1409-105X), Riley, D., Mistry, P., Neely, D., Smith, J. and Tolley, M. (2005) Enhanced He-alpha emission from "smoked" Ti targets irradiated with 400nm, 45 fs laser pulses. Europhysics Letters. pp. 242-248. ISSN 1286-4854

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We present a study of He-like 1s(2)-1s2p line emission from solid and low-density Ti targets under similar or equal to 45 fs laser pulse irradiation with a frequency doubled Ti: Sapphire laser. By varying the beam spot, the intensity on target was varied from 10(15) W/cm(2) to 10(19) W/cm(2). At best focus, low density "smoked" Ti targets yield similar to 20 times more He-alpha than the foil targets when irradiated at an angle of 45 degrees with s-polarized pulses. The duration of He-alpha emission from smoked targets, measured with a fast streak camera, was similar to that from Ti foils.

Item Type: Article
Copyright, Publisher and Additional Information: © EDP Sciences 2005. Reproduced in accordance with the publisher's self-archiving policy.
Institution: The University of York
Academic Units: The University of York > Physics (York)
Depositing User: Repository Assistant
Date Deposited: 20 Nov 2006
Last Modified: 07 Aug 2016 00:03
Published Version: http://dx.doi.org/10.1209/epl/i2005-10237-5
Status: Published
Refereed: Yes
URI: http://eprints.whiterose.ac.uk/id/eprint/1726

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