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Persistent URL	http://purl.org/net/epubs/work/62274
Record Status	Checked
Record Id	62274
Title	Influence of laser irradiated spot size on energetic electron injection and proton acceleration in foil targets
Contributors	M Coury (Strathclyde Univ.), DC Carroll (Strathclyde Univ.), APL Robinson (STFC Rutherford Appleton Lab.), XH Yuan (Strathclyde Univ.), CM Brenner (STFC Rutherford Appleton Lab., and Strathclyde Univ.), M Burza, RJ Gray (Strathclyde Univ.), MN Quinn (Strathclyde Univ.), KL Lancaster (STFC Rutherford Appleton Lab.), YT Li, XX Lin, O Tresca (Strathclyde Univ.), C- Wahlstrom, D Neely (STFC Rutherford Appleton Lab.), P McKenna (Strathclyde Univ.)
Abstract	The influence of irradiated spot size on laser energy coupling to electrons, and subsequently to protons, in the interaction of intense laser pulses with foil targets is investigated experimentally. Proton acceleration is characterized for laser intensities ranging from 2×1018−6×1020 W/cm2, by (1) variation of the laser energy for a fixed irradiated spot size, and (2) by variation of the spot size for a fixed energy. At a given laser pulse intensity, the maximum proton energy is higher under defocus illumination compared to tight focus and the results are explained in terms of geometrical changes to the hot electron injection.
Organisation	CLF , CI , STFC , CLF-VULCAN
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Language	English (EN)

Type	Details	URI(s)	Local file(s)	Year
Journal Article	Appl Phys Lett 100, no. 7 (2012): 074105.	doi:10.1063/1.3685615		2012