TY - JOUR
T1 - Plasma jets produced by low energy laser pulse interaction with planar and cratered targets
AU - Louzon, E.
AU - Raicher, E.
AU - Frank, Y.
AU - Tcibulsky, A.
AU - Levy, I.
AU - Hurvitz, G.
AU - Ehrlich, Y.
AU - Fraenkel, M.
AU - Maman, S.
AU - Mandelbaum, P.
AU - Zigler, A.
AU - Henis, Z.
PY - 2013/9
Y1 - 2013/9
N2 - Laser experiments of the plasma jet formation using nanosecond laser pulses with low energy, i.e., <20J, are presented. Planar and cratered gadolinium and aluminum targets are irradiated with laser intensities of several 1014W/cm2. Spatially-resolved time-integrated X-ray spectra were recorded in the spectral range from 7 to 10Å. A jet-like structure is obtained from aluminum targets with a preformed crater, which is not seen in planar target irradiation. For gadolinium, a jet is observed from both planar and preformed cratered targets, suggesting that the collimation is dominated by radiative cooling. A radiation-hydrodynamics code coupled to a non-LTE ionization code was used to model the plasma. The calculated plasma emission was found to be consistent with the experimental results.
AB - Laser experiments of the plasma jet formation using nanosecond laser pulses with low energy, i.e., <20J, are presented. Planar and cratered gadolinium and aluminum targets are irradiated with laser intensities of several 1014W/cm2. Spatially-resolved time-integrated X-ray spectra were recorded in the spectral range from 7 to 10Å. A jet-like structure is obtained from aluminum targets with a preformed crater, which is not seen in planar target irradiation. For gadolinium, a jet is observed from both planar and preformed cratered targets, suggesting that the collimation is dominated by radiative cooling. A radiation-hydrodynamics code coupled to a non-LTE ionization code was used to model the plasma. The calculated plasma emission was found to be consistent with the experimental results.
KW - Laser plasma experiments
KW - Laser produced jets
KW - Spatially resolved X-ray spectra
UR - http://www.scopus.com/inward/record.url?scp=84878864446&partnerID=8YFLogxK
U2 - 10.1016/j.hedp.2013.04.013
DO - 10.1016/j.hedp.2013.04.013
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AN - SCOPUS:84878864446
SN - 1574-1818
VL - 9
SP - 505
EP - 509
JO - High Energy Density Physics
JF - High Energy Density Physics
IS - 3
ER -