1. Generation and characterization of plasma channels in gas puff targets using soft X-ray radiography technique.
- Author
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Wachulak, P. W., Bartnik, A., Jarocki, R., Fok, T., Wegrzynski, L., Kostecki, J., Szczurek, M., Jabczynski, J., and Fiedorowicz, H.
- Subjects
X-rays ,RADIOGRAPHY ,LASER pulses ,PINHOLE cameras ,VELOCITY ,ENERGY density - Abstract
We present our recent results of a formation and characterization of plasma channels in elongated krypton and xenon gas puff targets. The study of their formation and temporal expansion was carried out using a combination of a soft X-ray radiography (shadowgraphy) and pinhole camera imaging. Two high-energy short laser pulses were used to produce the channels. When a pumping laser pulse was shaped into a line focus, using cylindrical and spherical lenses, the channels were not produced because much smaller energy density was deposited in the gas puff target. However, when a point focus was obtained, using just a spherical lens, the plasma channels appeared. The channels were up to 9 mm in length, had a quite uniform density profile, and expanded in time with velocities of about 2 cm/µs. [ABSTRACT FROM AUTHOR]
- Published
- 2014
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