کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1824561 | 1027341 | 2011 | 5 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Investigation of laser-produced aluminum plasma
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
فیزیک و نجوم
ابزار دقیق
پیش نمایش صفحه اول مقاله

چکیده انگلیسی
At DMFCI of Catania University, where a Quanta System Nd:YAG laser 600Â mJ of energy, 1064Â nm wavelength and 6Â ns pulse length operates, experiments about plasma expansion in vacuum (<10â5Â mbar), have been performed. Our studies are mostly devoted to nuclear and astrophysical purposes. Some preliminary investigations with aluminum thick targets are reported here. Plasma dynamics have been investigated mainly by means of a movable Langmuir Probe, and time of flight spectra have been acquired at different distances from the laser-target interaction area. The cross-correlation of Langmuir probe signals and hydro-dynamical simulation has permitted to calculate the structure of the inner plasma self-generated electric field that drives the plume expansion. The experimental data reveals also a time variable behavior of the self-generated field. This dependence on time produces also a multi-shell plasma in which the different layers expand with a given velocity, temperature and density.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment - Volume 653, Issue 1, 11 October 2011, Pages 47-51
Journal: Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment - Volume 653, Issue 1, 11 October 2011, Pages 47-51
نویسندگان
S. Tudisco, D. Mascali, N. Gambino, A. Anzalone, S. Gammino, F. Musumeci, A. Scordino, A. Spitaleri,