The 248-nm Excimer-Laser-Ablation Mechanism of Liquid Benzene Derivatives:  Photochemical Formation of Benzyl Radical Leads to Ablation

1998 ◽  
Vol 102 (10) ◽  
pp. 1661-1665 ◽  
Author(s):  
Yasuyuki Tsuboi ◽  
Koji Hatanaka ◽  
Hiroshi Fukumura ◽  
Hiroshi Masuhara
2002 ◽  
Vol 20 (2) ◽  
pp. 227-231 ◽  
Author(s):  
F.J. GORDILLO-VÁZQUEZ

A nonequilibrium kinetic model is used for predicting the time evolution of the Li atom concentrations (ground and excited states) in the plasma produced by excimer laser ablation of a LiNbO3 target. The model predicts a very high ionization degree (∼0.97) that agrees well with the one obtained experimentally (∼1). These results together with the prediction of high (and close to local thermodynamic equilibrium) population densities of the electronically excited Li upper energy levels provide an indirect support for an electronic rather than thermal ablation mechanism of Li atoms.


1992 ◽  
Vol 12 (4) ◽  
pp. 390-396 ◽  
Author(s):  
Joshua Lustmann ◽  
Mario Ulmansky ◽  
Amihay Fuxbrunner ◽  
Aaron Lewis

1997 ◽  
Vol 65 (3) ◽  
pp. 259-261 ◽  
Author(s):  
J. Heitz ◽  
J.D. Pedarnig ◽  
D. Bäuerle ◽  
G. Petzow

1990 ◽  
Vol 191 ◽  
Author(s):  
Michael E. Geusic ◽  
Alan F. Stewart ◽  
Larry R. Pederson ◽  
William J. Weber ◽  
Kenneth R. Marken ◽  
...  

ABSTRACTExcimer laser ablation with an in situ heat treatment was used to prepare high quality superconducting YBa2Cu3O7−x thin films on (100)-SrTiO3 and (100)-LaAlO3 substrates. A pulsed excimer laser (XeCl; 308 nm) was used to ablate a rotating, bulk YBa2Cu3O7−x target at a laser energy density of 2–3 J/cm2. Based on four-probe dc resistance measurements, the films exhibited superconducting transition temperatures (Tc, midpoint) of 88 and 87K with 2K (90–10%) transition widths for SrTiO3 and LaAlO3, respectively. Transport critical current densities (Jc) measured at 77K were 2 × 106 and 1 × 106 A/cm2 in zero field for SrTiO3 and LaAlO3, respectively. X-ray diffraction (XRD) analysis showed the films to be highly oriented, with the c-axis perpendicular to the substrate surface.


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