Search Results - "Falcone, Roger W"
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new regime of nanoscale thermal transport: Collective diffusion increases dissipation efficiency
Published in Proceedings of the National Academy of Sciences - PNAS (21-04-2015)“…Significance A complete description of nanoscale thermal transport is a fundamental problem that has defied understanding for many decades. Here, we uncover a…”
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2
Ultrafast X-ray Thomson Scattering of Shock-Compressed Matter
Published in Science (American Association for the Advancement of Science) (03-10-2008)“…Spectrally resolved scattering of ultrafast K-α x-rays has provided experimental validation of the modeling of the compression and heating of shocked matter…”
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3
A measurement of the equation of state of carbon envelopes of white dwarfs
Published in Nature (London) (06-08-2020)“…White dwarfs represent the final state of evolution for most stars 1 – 3 . Certain classes of white dwarfs pulsate 4 , 5 , leading to observable brightness…”
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4
Electron Small Polarons and Their Mobility in Iron (Oxyhydr)oxide Nanoparticles
Published in Science (American Association for the Advancement of Science) (07-09-2012)“…Electron mobility within iron (oxyhydr)oxides enables charge transfer between widely separated surface sites. There is increasing evidence that this internal…”
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5
X-ray linear dichroic ptychography
Published in Proceedings of the National Academy of Sciences - PNAS (19-01-2021)“…Biominerals such as seashells, coral skeletons, bone, and tooth enamel are optically anisotropic crystalline materials with unique nanoscale and microscale…”
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Understanding the effects of radiative preheat and self-emission from shock heating on equation of state measurement at 100s of Mbar using spherically converging shock waves in a NIF hohlraum
Published in Matter and radiation at extremes (15-01-2020)“…Over the last six years many experiments have been done at the National Ignition Facility to measure the Hugoniot of materials, such as CH plastic at extreme…”
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Ultrafast X-Ray Pulses from Laser-Produced Plasmas
Published in Science (American Association for the Advancement of Science) (01-02-1991)“…A high-temperature plasma is created when an intense laser pulse is focused onto the surface of a solid. An ultrafast pulse of x-ray radiation is emitted from…”
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Observation of Transient Iron(II) Formation in Dye-Sensitized Iron Oxide Nanoparticles by Time-Resolved X-ray Spectroscopy
Published in The journal of physical chemistry letters (06-05-2010)“…The reduction of ferric iron in solid phase minerals leads to the mobilization of ferrous iron in the environment and is thus a crucial component of the global…”
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Revealing multiphoton resonant ionization in solid density plasmas with an x-ray free electron laser
Published in 2012 Conference on Lasers and Electro-Optics (CLEO) (01-05-2012)“…Interaction of intense x-ray and solid density Al plasma is studied via K-shell emission spectroscopy. A high fluence, high-intensity x-ray pulse from an x-ray…”
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Conference Proceeding -
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A new regime of nanoscale thermal transport: Collective diffusion increases dissipation efficiency
Published in Proceedings of the National Academy of Sciences - PNAS (23-03-2015)“…Understanding thermal transport from nanoscale heat sources is important for a fundamental description of energy flow in materials, as well as for many…”
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Journal Article -
11
Shock Hugoniot of diamond from 3 to 80 TPa
Published 30-03-2022“…The principal Hugoniot of carbon, initially diamond, was measured from 3 to 80 TPa (30 to 800 million atmospheres), the highest pressure ever achieved, using…”
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Simultaneous compression and opacity data from time-series radiography with a Lagrangian marker
Published 15-10-2020“…Rev. Sci. Instrum. 92, 063514 (2021) Time-resolved radiography can be used to obtain absolute shock Hugoniot states by simultaneously measuring at least two…”
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Generation and application of ultrafast X-ray sources
Published in IEEE journal of quantum electronics (01-12-1989)“…Pulses at soft X-ray wavelengths with a duration of less than 1.5 ps were produced by focusing high-intensity, ultrafast visible laser pulses onto a solid…”
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14
Short-wavelength lasers
Published in Proceedings of the IEEE (01-03-1992)“…The development of short-wavelength lasers is reviewed. Three pumping mechanisms have been demonstrated which produce lasing at wavelengths from 3 to 100 nm…”
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Time-resolved x-ray scattering from excited matter
Published in The 15th Annual Meeting of the IEEE Lasers and Electro-Optics Society (2002)“…Summary form only given. I will discuss current and planned experiments in the study of ultrafast material dynamics, where lasers are used to pump, and…”
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Conference Proceeding -
16
Coherent and incoherent XUV emission in helium and neon, laser-driven plasmas
Published in IEEE transactions on plasma science (01-02-1993)“…The authors present results of measurements of high-order harmonic generation and XUV spontaneous emission in helium and neon plasmas excited by a short pulse…”
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