Using a streak camera, we directly measure time- and space-resolved dynamics of emission from a self-seeded filament. Fluorescence emission does not start with ionization, but with a delay in the tenth of ps range.
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http://dx.doi.org/10.1364/OE.468835 | DOI Listing |
Sci Rep
December 2024
National Key Laboratory of Intense Pulsed Radiation Simulation and Effect, Northwest Institute of Nuclear Technology, Xi'an, 710024, China.
A method of acquiring sequentially time-resolved two-dimensional images with parallel multi-group sampling strategy has been developed. In this technique, the two-dimensional image was sampled and transferred by a fiber bundle, the fibers of which were arranged in two-dimensional arrays in the input end and rearranged in four one dimensional lines in the output end. The output four groups of one-dimensional images were parallelly detected by a streak camera.
View Article and Find Full Text PDFJ Phys Chem B
December 2024
Chemical and Biological Sciences (CBS), S. N. Bose National Centre for Basic Sciences, Block-JD, Sector III, Salt Lake, Kolkata 700106, India.
Rain streaks pose a significant challenge to optical devices, impeding their ability to accurately recognize objects in images. To enhance the recognition capabilities of these devices, it is imperative to remove rain streaks from images prior to processing. While deep learning techniques have been adept at removing rain from the high-frequency components of images, they often neglect the low-frequency components, where residual rain streaks can persist.
View Article and Find Full Text PDFPhys Rev E
September 2024
School of Electrical and Computer Engineering (ECE), Cornell University, 439 Rhodes Hall, Ithaca, New York 14853, United States of America.
High temporal resolution x-ray streak camera studies of micropinch formation in Cu hybrid x pinches reveal key plasma conditions. Analysis of Ne-like Cu lines indicate an average electron temperature of about 200 eV and 4.5×10^{28}m^{-3} electron density.
View Article and Find Full Text PDFRev Sci Instrum
October 2024
Lawrence Livermore National Laboratory, Livermore, California 94550, USA.
The National Ignition Facility produced the first nuclear fusion experiment demonstrating net positive energy gain on December 5, 2022. The x-ray streak camera that measures the bang time and burn-width from this landmark experiment had an electronic failure and did not record data. The CCD sensor was replaced with a radiation hardened CMOS sensor that has since demonstrated successful operation on repeat ignition shots.
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