Modeling of outer radiation belt electrons by multidimensional diffusion process

Details Modeling of outer radiation belt electrons by multidimensional diffusion process Modeling of outer radiation belt electrons by multidimensional diffusion process

Mar 2009

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009jgra..11403201x&link_type=abstract

Journal of Geophysical Research, Volume 114, Issue A3, CiteID A03201

Physics

41

Ionosphere: Wave/Particle Interactions (7867), Magnetospheric Physics: Numerical Modeling, Magnetospheric Physics: Radiation Belts, Magnetospheric Physics: Energetic Particles: Precipitating, Magnetospheric Physics: Substorms

Scientific paper

In this study, we develop a new code which uses a hybrid finite difference (HFD) method to solve a 2-D bounce-averaged energy-pitch angle diffusion equation in the outer radiation belts. We implement the numerical algorithm by adopting a split operator technique, an implicit scheme for dealing with diagonal diffusion coefficients, and an alternative direction implicit scheme for off-diagonal (or cross) diffusion coefficients. We show that our code HFD can successfully overcome the unstable problem when the large and rapidly varying cross diffusion coefficients are included. Particularly, we examine whether resonant interactions with obliquely propagated whistler mode chorus and hiss waves result in a net acceleration or loss of relativistic electrons in the outer radiation belt L = 4.5. Numerical simulations show that chorus waves can yield significant acceleration of relativistic electrons, while hiss waves are primarily responsible for scattering equatorially mirroring electrons toward the loss cone.

Affiliated with

Also associated with

No associations

Rating

Modeling of outer radiation belt electrons by multidimensional diffusion process does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Modeling of outer radiation belt electrons by multidimensional diffusion process, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Modeling of outer radiation belt electrons by multidimensional diffusion process will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1264504