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pro vyhledávání: '"Ochs, Ian E."'
Autor:
Ochs, Ian E.
Recent work has shown that synchrotron emission from relativistic plasmas leads the electron distribution to form an anisotropic ring in momentum space, which can be unstable to both kinetic and hydrodynamic instabilities. Fundamental to these works
Externí odkaz:
http://arxiv.org/abs/2407.13106
Synchrotron radiation losses are a significant cause of concern for high-temperature aneutronic fusion reactions such as proton-Boron 11. The fact that radiation losses occur primarily in the high-energy tail, where the radiation itself has a substan
Externí odkaz:
http://arxiv.org/abs/2407.09716
Autor:
Ochs, Ian E., Fisch, Nathaniel J.
Recently, it has been shown that altering the natural collisional power flow of the proton-Boron 11 (pB11) fusion reaction can significantly reduce the Lawson product of ion density and confinement time required to achieve ignition. However, these pr
Externí odkaz:
http://arxiv.org/abs/2310.18508
Autor:
Ochs, Ian E., Fisch, Nathaniel J.
By producing localized wave regions at the ends of an open-field-line magnetic confinement system, ponderomotive walls can be used to differentially confine different species in the plasma. Furthermore, if the plasma is rotating, this wall can be mag
Externí odkaz:
http://arxiv.org/abs/2305.09768
Publikováno v:
Phys. Rev. E 106, 055215 (2022)
The proton-Boron 11 (p-B11) fusion reaction is much harder to harness for commercial power than the easiest fusion reaction, namely the deuterium and tritium (DT) reaction. The p-B11 reaction requires much higher temperatures, and, even at those high
Externí odkaz:
http://arxiv.org/abs/2210.08076
Recently, a method to achieve a "natural hot-ion mode" was suggested, by utilizing ion viscous heating in a rotating plasma with a fixed boundary. We explore the steady-state solution to the Braginskii equations and find the parameter regime in which
Externí odkaz:
http://arxiv.org/abs/2208.03780
Autor:
Ochs, Ian E., Fisch, Nathaniel J.
Publikováno v:
Physics of Plasmas 29, 062106 (2022)
Alpha channeling uses waves to extract hot ash from a fusion plasma, while transferring energy from the ash to the wave. Intriguingly, it has been proposed that the extraction of this charged ash could create a radial electric field, efficiently driv
Externí odkaz:
http://arxiv.org/abs/2201.07853
Autor:
Stollberg, Christine, Kroupp, Eyal, Mikitchuk, Dimitry, Sharma, Prashant, Bernshtam, Vladimir, Cvejic, Marko, Doron, Ramy, Stambulchik, Evgeny, Maron, Yitzhak, Fruchtman, Amnon, Ochs, Ian E., Fisch, Nathaniel J., Shumlak, Uri
Spectroscopic measurements of the magnetic field evolution in a Z-pinch throughout stagnation and with particularly high spatial resolution reveal a sudden current redistribution from the stagnating plasma (SP) to a low density plasma (LDP) at larger
Externí odkaz:
http://arxiv.org/abs/2111.06450
The rotation profile of a magnetized plasma cylinder composed of multiple fluids is investigated analytically, expanding on previous results. The analytic steady-state solution is used as a benchmark for a time-dependent multiple-fluid finite-differe
Externí odkaz:
http://arxiv.org/abs/2108.10861
Autor:
Ochs, Ian E., Fisch, Nathaniel J.
Publikováno v:
Phys. Rev. Lett. 127, 025003 (2021)
The gradient of fusion-born alpha particles that arises in a fusion reactor can be exploited to amplify waves, which cool the alpha particles while diffusively extracting them from the reactor. The corresponding extraction of the resonant alpha parti
Externí odkaz:
http://arxiv.org/abs/2012.06532