Browsing by Author "Chuaqui, H."
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- ItemLaser-produced annular plasmas(AMER INST PHYSICS, 2006) Veloso, F.; Chuaqui, H.; Aliaga Rossel, R.; Favre, M.; Mitchell, I. H.; Wyndham, E.A new technique is presented for the formation of annular plasmas on a metal surface with a high-power laser using a combination of axicon and converging lenses. The annular plasma formed on a titanium target in a chamber of hydrogen gas was investigated using schlieren imaging and Mach Zehnder interferometry. Expansion of the plasma was shown to be anisotropic with velocities of similar to 10(3)-10(4) m/s. Electron densities of 10(18) cm(-3) were measured with radial profiles that confirm the presence of a hollow structure. The interferometric observations also show the presence of an inward shock wave traveling to the center of the annular plasma, which compresses the background neutrals, reaching a density around 18 times initial gas density, at 95 ns after the initial annular plasma is produced.
- ItemObservations of Ablation Dynamics in Wire-Array Z-Pinch Experiments on the Llampudken Generator(2012) Veloso Espinosa, Felipe; Suzuki-Vidal, F.; Molina, F.; Mitchell, I. H.; Chuaqui, H.; Favre, M.; Wyndham, E.
- ItemRefractive optical measurements on the Llampüdkeñ generator(2006) Suzuki, F.; Veloso Espinosa, Felipe; Molina, F.; Mitchell, I.; Chuaqui, H.; Aliaga-Rossel, R.; Favre, M.; Wyndham, E.
- ItemSub-micron size carbon structures synthesized using plasma enhanced CVD without external heating and no catalyzer action(2010) Valderrama, Enrique; Favre Domínguez, Mario; Bhuyan, Heman; Ruiz, H. M.; Wyndham, Edmund; Valenzuela, J.; Chuaqui, H.