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379. Thermonuclear fusion: list of posts
Before proceeding to the discussion of hydrodynamic instabilities in plasma, let me list for further reference all the posts I wrote so far about thermonuclear fusion and thermonuclear reactors: 1. Thermonuclear fusion: some basic facts about thermonuclear reactions, where I start explaining why such phenomenon as thermonuclear fusion can even take place in Nature I [...]
375. Inertial confinement: concluding part on lasers
The previous parts on interaction between laser emission and material of fuel capsule are “Inertial confinement – using lasers for compression” and “Inertial confinement: more on interaction of laser emission with matter“. I hope to finish with discussion of laser-target interaction today and proceed to instabilities (the most interesting part of the physics of inertial [...]
368. Inertial confinement: more on interaction of laser emission with matter
Yeah… so, where did we stop last time? I’ve just said another triviality – that laser emission strongly interacts with material of the fuel capsule. There are several mechanisms of this interaction: deflection (ablator and fuel are almost transparent but not quite), absorption and scattering. Wired Science visits LLNL and National Ignition Facility As for [...]
365. Inertial confinement – using lasers for compression
I hope you are not getting bored too much by my discussion of thermonuclear fusion in inertial confinement reactors, because today I’m going to continue and finally start explaining why do they want to use lasers in HiPER to compress plasma. Basically, the main bonus of using lasers is their ability to concentrate huge energy [...]
364. Thermonuclear reactors. More on inertial confinement
Last time I did not quite finish with the discussion of physics of inertial confinement, so let me continue… An important parameter that characterizes plasma in reactors with inertial confinement is the ratio between the geometric size of the region where reactions take place and the mean free path of -particles. It basically determines the [...]
358. Thermonuclear reactors. Inertial confinement
I am currently keeping studying thermonuclear fusion and reactors a bit and, I should admit, I’m absolutely in love with HiPER and inertial confinement as an idea – it is so much more elegant than magnetic confinement used in Tokamaks… But before I’ll turn to the discussion of inertial confinement reactors, let me finish with [...]
357. Vortex line representation. Coulomb interaction of vortex lines
After brief introduction into vortex line representation we are probably ready to discuss the interaction of vortex lines between each other. But before I proceed to the actual derivation, let me focus for a bit on not so terribly popular (but powerful) formulation of ideal hydrodynamics – Hamiltonian formulation. The Lagrangian of incompressible fluid (I [...]
355. Introduction into thermonuclear reactors
After a brief layman review of the theory of thermonuclear fusion let me get more practical and discuss a bit how thermonuclear reactors are supposed to work. Basically, we want the energy release of the thermonuclear reactor to be larger than the energy we pump into the reactor. Depending on a particular scenario of the [...]
354. Vortex line representation. Clebsch variables
Let us continue our brief discussion of behavior of the vorticity field in the Eulerian flow. (and that’s how vortex lines look like in reality… as if you wouldn’t know ) This time I would really like to derive some equations describing dynamics of vortex lines. For this, it is convenient to use so called [...]
353. Vortex line representation. Cauchy invariant
Several days ago I’ve promised in comments to discuss dynamics of vortex lines in turbulent flows, today is probably a good day to start. And the natural starting point of course is the Kelvin theorem and Cauchy invariant. Let us consider an ideal (inviscid, uncompressible) fluid described by the Euler equation and incompressibility condition . [...]
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On moduli stabilisation in heterotic orbifolds
April 24, 2012 09:04 -
A holographic model of the quantum Hall effect
April 19, 2012 09:04 -
Transdimensional Multiverse Measures
April 18, 2012 11:04 -
Large non-Gaussianity from axion inflation
January 31, 2012 14:01 -
On strong disorder renormalization
March 18, 2011 20:03
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Momchil: I want to ask the experts about an apparent confusion, that appears in many papers on the Unruh effect. As you stat...
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Paul: Excellent list! how lucky you are to be involved in the effort to solve some of these. On time, I question its re...
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philbert: Simple illustration and may apply to mixed layer boundary layers, how about the stable and other types of boundary ...
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Micro: Can 2 question provide a common solution? Black holes, information loss paradox and Ultra high energy cosmic rays. ...
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James Ph. Kotsybar: SAGITTARIUS A* -- James Ph. Kotsybar Mysteriously cloaked, obscure despite Interior illuminating glare, Long ...
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cad: The presentation can be found in several formats at http://pirsa.org/08110051/...
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Leo: Ok I have a question: if a black hole is supermassive, say 100 billion solar mass, let's suppose Alice fells int...
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superkuh: I am glad you are back! No more disapointing weekly refreshings of that monkey....
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