TY - JOUR
T1 - Enhanced He-α emission from ‘smoked’ Ti targets irradiated with 400nm 45fs laser pulses
AU - Khattak, Fida
AU - Clarke, R.J.
AU - Divall, E.J.
AU - Edwards, M.
AU - Foster, P.S.
AU - Hooker, C.J.
AU - Langley, A.J.
AU - Mistry, P.
AU - Neely, D.
AU - Percie Du Sert, O.A.M.B.
AU - Smith, J.
AU - Spindloe, C.
AU - Tallents, G.J.
AU - Tolley, M.
AU - Riley, David
PY - 2005/10/15
Y1 - 2005/10/15
N2 - 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.
AB - 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.
UR - http://www.scopus.com/inward/record.url?scp=27344447856&partnerID=8YFLogxK
U2 - 10.1209/epl/i2005-10237-5
DO - 10.1209/epl/i2005-10237-5
M3 - Article
SN - 0295-5075
VL - 72
SP - 242
EP - 248
JO - Europhysics Letters (EPL)
JF - Europhysics Letters (EPL)
IS - 2
ER -