Lasergate: A windowless gas target for enhanced laser preheat in magnetized liner inertial fusion
| العنوان: | Lasergate: A windowless gas target for enhanced laser preheat in magnetized liner inertial fusion |
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| المؤلفون: | John L. Porter, Mark Kimmel, Patrick K. Rambo, Sophie Gautier, Vincent Sauget, M. Geissel, Justin Sin, Ian C. Smith, Benjamin R. Galloway, Robert Speas, Stephen A. Slutz, Adam Harvey-Thompson, Matthew Weis, Greg Rochau, Chris Jennings, C. S. Speas, Andrew Spann, Anthony P. Colombo, Damon E. Kletecka, Quinn Looker, Ella Suzanne Field, Jens Schwarz, Aaron Edens, Jonathon Shores, Paul Treadwell |
| المصدر: | Physics of Plasmas. 28:112703 |
| بيانات النشر: | AIP Publishing, 2021. |
| سنة النشر: | 2021 |
| مصطلحات موضوعية: | Physics, Fusion, Work (thermodynamics), law, Nuclear engineering, Window (computing), Deposition (phase transition), Magnetized Liner Inertial Fusion, Condensed Matter Physics, Laser, Inertial confinement fusion, Beam (structure), law.invention |
| الوصف: | At the Z Facility at Sandia National Laboratories, the magnetized liner inertial fusion (MagLIF) program aims to study the inertial confinement fusion in deuterium-filled gas cells by implementing a three-step process on the fuel: premagnetization, laser preheat, and Z-pinch compression. In the laser preheat stage, the Z-Beamlet laser focuses through a thin polyimide window to enter the gas cell and heat the fusion fuel. However, it is known that the presence of the few μm thick window reduces the amount of laser energy that enters the gas and causes window material to mix into the fuel. These effects are detrimental to achieving fusion; therefore, a windowless target is desired. The Lasergate concept is designed to accomplish this by “cutting” the window and allowing the interior gas pressure to push the window material out of the beam path just before the heating laser arrives. In this work, we present the proof-of-principle experiments to evaluate a laser-cutting approach to Lasergate and explore the subsequent window and gas dynamics. Further, an experimental comparison of gas preheat with and without Lasergate gives clear indications of an energy deposition advantage using the Lasergate concept, as well as other observed and hypothesized benefits. While Lasergate was conceived with MagLIF in mind, the method is applicable to any laser or diagnostic application requiring direct line of sight to the interior of gas cell targets. |
| تدمد: | 1089-7674 1070-664X |
| URL الوصول: | https://explore.openaire.eu/search/publication?articleId=doi_________::a4b9f97b080f9490f4c053d4a65e1047 https://doi.org/10.1063/5.0059334 |
| حقوق: | OPEN |
| رقم الأكسشن: | edsair.doi...........a4b9f97b080f9490f4c053d4a65e1047 |
| قاعدة البيانات: | OpenAIRE |
Find this article in full text from Scitation. | تدمد: | 10897674 1070664X |
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