Final published version
Research output: Contribution to Journal/Magazine › Journal article › peer-review
Research output: Contribution to Journal/Magazine › Journal article › peer-review
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TY - JOUR
T1 - Target surface area effects on hot electron dynamics from high intensity laser-plasma interactions
AU - Zulick, C.
AU - Raymond, A.
AU - McKelvey, A.
AU - Chvykov, V.
AU - Maksimchuk, A.
AU - Thomas, A. G. R.
AU - Willingale, L.
AU - Yanovsky, V.
AU - Krushelnick, K.
PY - 2016/6/15
Y1 - 2016/6/15
N2 - Reduced surface area targets were studied using an ultra-high intensity femtosecond laser in order to determine the effect of electron sheath field confinement on electron dynamics. X-ray emission due to energetic electrons was imaged using a Ka imaging crystal. Electrons were observed to travel along the surface of wire targets, and were slowed mainly by the induced fields. Targets with reduced surface areas were correlated with increased hot electron densities and proton energies. Hybrid Vlasov-Fokker-Planck simulations demonstrated increased electric sheath field strength in reduced surface area targets.
AB - Reduced surface area targets were studied using an ultra-high intensity femtosecond laser in order to determine the effect of electron sheath field confinement on electron dynamics. X-ray emission due to energetic electrons was imaged using a Ka imaging crystal. Electrons were observed to travel along the surface of wire targets, and were slowed mainly by the induced fields. Targets with reduced surface areas were correlated with increased hot electron densities and proton energies. Hybrid Vlasov-Fokker-Planck simulations demonstrated increased electric sheath field strength in reduced surface area targets.
KW - laser-plasma
KW - mass-limited
KW - fast electrons
KW - sheath field
KW - MASS-LIMITED TARGETS
KW - ION-ACCELERATION
KW - SOLID INTERACTIONS
KW - PULSES
KW - ULTRAINTENSE
KW - GENERATION
U2 - 10.1088/1367-2630/18/6/063020
DO - 10.1088/1367-2630/18/6/063020
M3 - Journal article
VL - 18
JO - New Journal of Physics
JF - New Journal of Physics
SN - 1367-2630
M1 - 063020
ER -