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Wave-kinetic theory and simulations for filamentation and modulational instabilities by Raoul Trines

294 views · Published 9 March 2017 · 58:45 · Indexed 20 September 2026

Channel: International Centre for Theoretical Sciences · 2017 · Science & Technology

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06 March 2017 to 17 March 2017

VENUE: Ramanujan Lecture Hall, ICTS Bangalore

Particle accelerators have been instrumental in unraveling some of the deep questions related to matter at the fundamental level, the latest being discovery of the Higgs Boson. The conventional accelerators, however, have reached their limit in terms of size and energy, as acceleration gradients in the state of art accelerators have reached the material breakdown limit (~ MV/cm). A new principle of particle acceleration is desirable at this juncture. A strong candidate for this is the plasma wake field based acceleration (driven by lasers and/or particle beams). This scheme provides a promise of about thousand fold increase in the acceleration gradient (~ GV/cm). Furthermore, plasma being already a broken down medium, does not get adversely effected by such huge electric fields. This paves a way for building table top compact accelerators for electron as well as ion beams which can make crucial contributions to our fundamental understanding of matter and would have applications in many areas such as medical, security, imaging etc.

This program will cover a series of pedagogical lectures on the status and future of this new technology. In addition, a focused program on exploring collaborative activities on theoretical aspects of laser-plasma interactions in general (partly supported by the UK-India Newton-Bhabha funds) is also planned. Brain storming discussion sessions to look into possible near and long term challenges in high energy physics would be conducted. Other applications in the field of medical, security and imaging would be discussed. Moreover, looking at the pace of development in laser intensity, possibility of exploring new physics such as radiation reaction effects, pair production etc., in laboratory experiments would soon become a reality. Keeping these excitements in view, a planned activity at national level will be explored.

 
Announcement

Students, post docs and young researchers interested in participating in the program may send their CV along with a brief (100 words) statement on their interest in the program by 5th of Feb at the email id: [email protected]
The selection for participation would be conveyed by 10th of Feb.

CONTACT US:
[email protected]

PROGRAM LINK:
https://www.icts.res.in/program/LPA2017

Table of Contents (powered by https://videoken.com)
0:00:00 Start 
0:00:11 Wave-kinetic theory and simulations for lamentation and modulation instabilities
0:00:20 Contents
0:01:23 Particles are also waves
0:02:39 Waves are also particles
0:03:36 The math behind it
0:05:16 Wigner function
0:11:25 Photon acceleration in laser- wakefield experiments
0:13:03 Eiscat ionosphere experiment
0:14:33 Modulation instability
0:16:50 Wave-kinetic simulations
0:18:15 Filamentation instability
0:19:55 Example: Raman amplification
0:22:15 Theory
0:24:37 Self-Focusing
0:24:57 lamentation
0:25:25 Filamentation as a four-wave process
0:26:21 Ponderomotive vs Thermal lamentation
0:27:12 Threshold Intensity for thermal and ponderomotive lamentation
0:28:22 Bandwidth Results For Raman forward and backward scattering
0:29:48 Simulations of lamentation
0:30:45 Simulation results I
0:31:23 Simulation results II
0:32:38 Advanced wave kinetics
0:34:33 Drift waves
0:35:34 "Kinetic" drift wave theory
0:36:37 Simulations
0:37:48 Simulation results
0:39:09 Cluster satellite data: magnetopause
0:40:15 Cluster versus simulations
0:40:57 Summary and conclusions

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