Phase Space Density matching of relativistic electrons using the Van Allen Probes: REPT results

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TitlePhase Space Density matching of relativistic electrons using the Van Allen Probes: REPT results
Publication TypeJournal Article
Year of Publication2013
AuthorsMorley, SK, Henderson, MG, Reeves, GD, Friedel, RHW, Baker, DN
JournalGeophysical Research Letters
Volume40
Start Page4798
Issue18
Pagination4798–4802
Date Published09/2013
KeywordsRBSP; Van Allen Probes
Abstract1] Phase Space Density (PSD) matching can be used to identify the presence of nonadiabatic processes, evaluate accuracy of magnetic field models, or to cross-calibrate instruments. Calculating PSD in adiabatic invariant coordinates requires a global specification of the magnetic field. For a well specified global magnetic field, nonadiabatic processes or inadequate cross calibration will give a poor PSD match. We have calculated PSD(μ, K) for both Van Allen Probes using a range of models and compare these PSDs at conjunctions in L* (for given μ, K). We quantitatively assess the relative goodness of each model for radiation belt applications. We also quantify the uncertainty in the model magnetic field magnitude and the related uncertainties in PSD, which has applications for modeling and particle data without concurrent magnetic field measurements. Using this technique, we show the error in PSD for an energy spectrum observed by the relativistic electron-proton telescope (REPT) is a factor of ∼1.2 using the TS04 model.
URLhttp://doi.wiley.com/10.1002/grl.50909
DOI10.1002/grl.50909
Short TitleGeophys. Res. Lett.


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