Lab Home | Phone | Search
Center for Nonlinear Studies  Center for Nonlinear Studies
 Home 
 People 
 Current 
 Affiliates 
 Visitors 
 Students 
 Research 
 ICAM-LANL 
 Publications 
 Conferences 
 Workshops 
 Sponsorship 
 Talks 
 Colloquia 
 Colloquia Archive 
 Seminars 
 Postdoc Seminars Archive 
 Quantum Lunch 
 CMS Colloquia 
 Q-Mat Seminars 
 Q-Mat Seminars Archive 
 Archive 
 Kac Lectures 
 Dist. Quant. Lecture 
 Ulam Scholar 
 Colloquia 
 
 Jobs 
 Students 
 Summer Research 
 Student Application 
 Visitors 
 Description 
 Past Visitors 
 Services 
 General 
 PD Travel Request 
 
 History of CNLS 
 
 Maps, Directions 
 CNLS Office 
 T-Division 
 LANL 
 
Thursday, March 14, 2019
2:00 PM - 3:00 PM
CNLS Conference Room (TA-3, Bldg 1690)

Postdoc Seminar

Beam-plasma interactions physics in support of active space experiments

Kateryna Yakymenko
T-5/CNLS

Recent advances in accelerator technologies as well as space diagnostic instruments open possibilities for new electron beam experiments in space. Two examples of such experiments include the CONNection EXplorer (CONNEX) experiment and the Beam Plasma Interaction Experiment (BeamPIE). The CONNEX experiment aims to study magnetic connectivity between regions in the magnetosphere and ionosphere. The BeamPIE project will fly an advanced electron beam on an ionospheric rocket in order to generate whistler and X-mode plasma waves. The waves can be very efficient in scattering energetic electrons present in natural environment and thus the technology has a potential to be used to decrease fluxes of harmful energetic particles in the radiation belts. Our modeling and theoretical work supports the design of both experiments and studies feasibility of using electron beams to remediate artificial and natural radiation belts. There are many scientific aspects of the beam physics for space applications and in the presentation I will focus on the wave-related side of the problem. I will discuss generation of the coherent Cherenkov radiation by a pulsed electron beam and will show results of our simulations of the radiation. I will then discuss importance of the beam dynamics, particularly its effect on the spatial extent of the wave field. I will end with a brief discussion of other aspects of the problem that a crucial to accurately quantify scattering of energetic particles by artificially generated plasma waves.

Host: David Metiver