151 citations · 235 across the 17 of their papers we have counts for
17 papers
Asymptotic behavior of the shear flow reactivity enhancement effect
Henry Fetsch, Nathaniel J. Fisch
Fusion reactivity is enhanced in the vicinity of strongly sheared flow due to the tendency of fast ions near the Gamow peak to travel long distances between collisions, thereby som…
Enhancement of Ponderomotive End Plugs with Low-Mass Dopants
Ian E. Ochs, Elijah J. Kolmes, Nathaniel J. Fisch
During conventional confinement of a linear plasma using ponderomotive end plugs, a repulsive potential is created at the axial ends by employing a perpendicularly-polarized wave w…
Bremsstrahlung constraints on proton-Boron 11 inertial fusion
I. E. Ochs, E. J. Kolmes, A. S. Glasser +1
Proton-Boron 11 (pB11) fusion is relatively safe and clean, but difficult to use for net power production, since bremsstrahlung radiation tends to radiate away power more quickly t…
Approximating the Particle Distribution in Rotating and Tandem Mirror Traps
Greta X. Li, Elijah J. Kolmes, Ian E. Ochs +1
Steady state distribution functions can be used to calculate stability conditions for modes, radiation energy losses, and particle loss rates. Heuristic analytic approximations to…
Preventing ash from poisoning proton-boron 11 fusion plasmas
Ian E. Ochs, Elijah J. Kolmes, Nathaniel J. Fisch
Proton-Boron 11 (pB11) fusion is safe and clean, but also difficult to harness for breakeven power production. Particularly deleterious are fusion-born alpha particles, which massi…
Ponderomotive barriers in rotating mirror devices using static fields
Tal Rubin, Nathaniel J. Fisch
Particularly for aneutronic fusion schemes, it is advantageous to manipulate the fuel species differently from one another, as well as expel ash promptly. The ponderomotive effect…
Gromov ground state in phase space engineering for fusion energy
Hong Qin, Elijah J. Kolmes, Michael Updike +2
Phase space engineering by RF waves plays important roles in both thermal D-T fusion and non-thermal advanced fuel fusion. But not all phase space manipulation is allowed, certain…
Energy Spectrum of Lost Alpha Particles in Magnetic Mirror Confinement
Alejandro Mesa Dame, Ian E. Ochs, Nathaniel J. Fisch
In a magnetic mirror fusion reactor, capturing the energy of fusion-produced alpha particles is essential to sustaining the reaction. However, since alpha particles are born at ene…
Electron Tail Suppression and Effective Collisionality due to Synchrotron Emission and Absorption in Mildly Relativistic Plasmas
Ian E. Ochs, Mikhail E. Mlodik, Nathaniel J. Fisch
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 prima…
Loss-Cone Stabilization in Rotating Mirrors: Thresholds and Thermodynamics
E. J. Kolmes, I. E. Ochs, N. J. Fisch
In the limit of sufficiently fast rotation, rotating mirror traps are known to be stable against the loss-cone modes associated with conventional (non-rotating) mirrors. This paper…
Finite-Difference Multiple Fluid Solution for Source-Driven Rotation in Highly Magnetized Linear Plasma Device
Tal Rubin, Elijah J. Kolmes, Ian E. Ochs +2
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…
Self-generated plasma rotation in a Z-pinch implosion with preembedded axial magnetic field
M. Cvejić, D. Mikitchuk, E. Kroupp +8
Using detailed spectroscopic measurements, highly-resolved in both time and space, a self-generated plasma rotation is demonstrated for the first time in a cylindrical Z-pinch impl…
Current channel evolution in ideal Z pinch for general velocity profiles
Ian E. Ochs, Christine Stollberg, Eyal Kroupp +5
Recent diagnostic advances in gas-puff Z pinches at the Weizmann Institute for the first time allow the reconstruction of the current flow as a function of time and radius. These e…
Anisotropy-driven collisional separation of impurities in magnetized compressing and expanding cylindrical plasmas
Ian E. Ochs, Nathaniel J. Fisch
When a cylindrically-symmetric magnetized plasma compresses or expands, velocity-space anisotropy is naturally generated as a result of the different adiabatic conservation laws pa…
Particle Orbits in a Force-Balanced, Wave-Driven, Rotating Torus
I. E. Ochs, N. J. Fisch
The wave-driven rotating torus (WDRT) is a recently proposed fusion concept where the rotational transform is provided by the E x B drift resulting from a minor radial electric fie…
Extended propagation of powerful laser pulses in focusing Kerr media
V. M. Malkin, N. J. Fisch
Powerful incoherent laser pulses can propagate in focusing Kerr media much longer distances than can coherent pulses, due to the fast phase mixing that prevents transverse filament…
Exawatt-Zettawatt Pulse Generation and Applications
G. A. Mourou, N. J. Fisch, V. M. Malkin +4
A new amplification method, weaving the three basic compression techniques, Chirped Pulse Amplification (CPA), Optical Parametric Chirped Pulse Amplification (OPCPA) and Plasma Com…