Affiliations: École de Génie, Université de Moncton, Moncton,
New-Brunswick, E1A 3E9, Canada. | INRS-Energie et Matériaux, Université du Québec,
1650 Boulevard Lionel-Boulet, Varennes, Québec, J3X 1S2, Canada. | SUNY Health Science Center, Department of Radiology,
750 E. Adams St., Syracuse, NY 13210, USA.
Abstract: K-edge and Ross filters techniques were used to measure
quantitatively the X-ray emission from laser heated Al, Mo, and Ta plasmas in
the range of 10 to 100 eV. The INRS Table Top Terawatt laser system using
Chirped Pulse Amplification technique supplied a focused laser pulse of about
300 mJ in 450 fs duration at λ=0.53 µm, achieving
irradiation intensities on the target surface up to 5×
1017W/cm². The experimental results are compared to
calculation of the hard X-ray radiation based on bombardment of solid target by
electrons. Furthermore, the dependence of X-ray emission on laser energy,
irradiation intensity and the target atomic number are discussed.
