Intense XUV and soft X-ray emission from laser-produced plasma sources are currently of great interest for a variety of research applications including inertial confinement fusion, and X-ray backlighting. Optimization of X-ray lines such as the He_α line (resonance line 1S2P ¹P₁-1S^{2 1}S₀), the inter-combination line (1S2P ³P₁^_1S^{2 1}S₀), thedi-electronic satellite (1S2P^{2 2}D^_1S²2P ²P) lines and the Kα lines along with bremsstrahlung radiation in the spectral range 0.8–8.5 keV has been carried out using a 20J/500ps laser system. Optimization has been performed by changing the laser energy at fixed laser focal position and with focal position variation while keeping the laser energy constant.