A computational study of nonresonant cross-field diffusion of energetic particles due to their interaction with interplanetary magnetic decreases

Details A computational study of nonresonant cross-field diffusion of energetic particles due to their interaction with interplanetary magnetic decreases A computational study of nonresonant cross-field diffusion of energetic particles due to their interaction with interplanetary magnetic decreases

Jul 2011

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2011jastp..73.1405c&link_type=abstract

Journal of Atmospheric and Solar-Terrestrial Physics, Volume 73, Issue 11, p. 1405-1409.

Physics

Scientific paper

We present a new method of calculating cross-field diffusion of charged particles due to their interactions with interplanetary magnetic decreases (MDs) in high heliospheric latitudes. We use a geometric model that evaluates perpendicular diffusion to the ambient magnetic field as a function of particle's gyroradius, MD radius, ratio between fields outside and inside the MD, and a random impact parameter. We use Ulysses magnetic field data of 1994 to identify the MDs and get the empirical size and magnetic field decrease distribution functions. We let protons with energies ranging from 100 keV to 2 MeV interact with MDs. The MD characteristics are taken from the observational distribution functions using the Monte Carlo method. Calculations show that the increase in diffusion tends to saturate when particles' gyroradius becomes as large as MD radii, and that particles' gyroradius increases faster than diffusion distance as the energy of the particles is increased.

Affiliated with

Also associated with

No associations

Rating

A computational study of nonresonant cross-field diffusion of energetic particles due to their interaction with interplanetary magnetic decreases 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 A computational study of nonresonant cross-field diffusion of energetic particles due to their interaction with interplanetary magnetic decreases, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and A computational study of nonresonant cross-field diffusion of energetic particles due to their interaction with interplanetary magnetic decreases will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-996110