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
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.
|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:||11 Apr 2016 13:52|