Výsledky vyhledávání - "James Easter"

Focus optimization at relativistic intensity with high numerical aperture and adaptive optics

Autor: James Easter, Jinpu Lin, Jian Dong, A. G. R. Thomas, Mark Mathis, John Nees, Karl Krushelnick

Publikováno v: Optics Communications. 421:79-82

Improved focusing of laser beams using high numerical aperture systems is an efficient route to increasing intensities in the ultrafast regime to relativistic levels. We experimentally demonstrate a new method of optimizing the focus of a high-power

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::e7b73d0cff14296356cb08074fd31619
https://doi.org/10.1016/j.optcom.2018.03.075

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Person-in-the-Loop Testing of a Digital Power Plant Control Room

Autor: Satoshi Hanada, Emilie M. Roth, Timothy Clouser, Gilbert William Remley, Kenji Mashio, James Easter, Leonard Kabana, Robert E. Hall

Publikováno v: Proceedings of the Human Factors and Ergonomics Society Annual Meeting. 54:289-293

There is renewed interest in building new commercial nuclear power plants. Unlike existing plants that have traditional control rooms with large control boards, new plants will have compact digital control rooms. The transition to digital control roo

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::7d02665b4c6f7bcc47882332994b7ac5
https://doi.org/10.1177/154193121005400405

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Microdroplet target synthesis for kilohertz ultrafast lasers

Autor: Pavel Chvykov, Bixue Hou, John Nees, Karl Krushelnick, Wise Ongg, James Easter

We have developed a method for producing spatially stable micron-scale liquid targets of flexible shapes at kilohertz repetition rate for use in air and vacuum, by perturbing 5 and 30 \mu m diameter streams with femtosecond laser pulses and monitorin

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::4bc9c3644899d2445d5cd64bf2d1f566
http://arxiv.org/abs/1212.3353

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High-order harmonic generation from solid targets with 2 mJ pulses

Autor: Bixue Hou, Alexander Thomas, James Easter, Gerard Mourou, Aghapi Mordovanakis, John Nees, Karl Krushelnick

Publikováno v: Optics Letters
Optics Letters, Optical Society of America-OSA Publishing, 2010, 35 (19), pp.3186-3188. ⟨10.1364/ol.35.003186⟩

International audience; Harmonics up to the 18th order are generated from solid targets by focusing 2 mJ, 50 fs pulses at 800 nm to a spot size of 1:7 µm (FWHM). To our knowledge, this is the first demonstration of high-harmonic generation with a ve

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::54994ba6b75b2454f63ee6500295c5e1

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High Harmonic Generation from Solid Targets at High Repetition Rate

Autor: James Easter, Bixue Hou, John Nees, Karl Krushelnick, Aghapi G. Mordovanakis, Gerard Mourou

Publikováno v: Scopus-Elsevier

Harmonics up to the 15th order are produced from solid targets using 3 mJ, 30 fs pulses focused to a spot size of 1.7 µm and 3×1018 W/cm2. Combined conversion efficiency to the highest harmonics is > 10−5.

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::557f0a068214e4b567609ff005e1eabc
https://doi.org/10.1364/qels.2010.jwc4

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Quasimonoenergetic electron beams with relativistic energies and ultrashort duration from laser-solid interactions at 0.5 kHz

Autor: Konstantin Popov, John Nees, Karl Krushelnick, Gerard Mourou, James Easter, Valery Bychenkov, I. V. Glazyrin, Wojciech Rozmus, Bixue Hou, Igor V. Sokolov, Paul-Edouard Masson-Laborde, Natalia M. Naumova, Aghapi Mordovanakis

Publikováno v: Physical Review Letters
Physical Review Letters, American Physical Society, 2009, 103 (23), pp.235001.1-235001.4. ⟨10.1103/physrevlett.103.235001⟩
Physical Review Letters, 2009, 103 (23), pp.235001.1-235001.4. ⟨10.1103/physrevlett.103.235001⟩

International audience; We investigate the production of electron beams from the interaction of relativistically-intense laser pulses with a solid-density SiO2 target in a regime where the laser pulse energy is -mJ and the repetition rate -kHz. The e

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US-APWR Human Systems Interface System Verification and Validation Results: Impact on Digital I&C Design

Autor: Robert E. Hall, Koichi Takahashi, Emilie M. Roth, Kenji Mashio, James Easter, Leonard Kaban, Timothy Clouser, Kunio Yugami

Publikováno v: Volume 5: Fuel Cycle and High and Low Level Waste Management and Decommissioning; Computational Fluid Dynamics (CFD), Neutronics Methods and Coupled Codes; Instrumentation and Control.

The US-APWR, currently under Design Certification Review by the US Nuclear Regulatory Commission, is a four-loop evolutionary pressurized water reactor with a four-train active safety system by Mitsubishi Heavy Industries. The Instrumentation and Con

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::986a4cc6796e6fe326c860a6df614a27
https://doi.org/10.1115/icone17-75176

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Stable Long-Cavity Regenerative Amplifier with 10-11 ASE Contrast

Autor: John Nees, Bixue Hou, James Easter, E. Power

Publikováno v: 2007 Conference on Lasers and Electro-Optics (CLEO).

Design and measurements of a high-contrast millijoule regenerative amplifier are presented. Coupled with a preamplifier and saturable absorber, the amplifier and subsequent compressor produce 3.7 mJ, 33 fs pulses with nanosecond ASE contrast of 10-11

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::470662b6f51a4b243532d88481338985
https://doi.org/10.1109/cleo.2007.4453573

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