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Strong Pitch Angle Scattering and the Kennel-Petschek Limit

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Presentation on theme: "Strong Pitch Angle Scattering and the Kennel-Petschek Limit"— Presentation transcript:

1 Strong Pitch Angle Scattering and the Kennel-Petschek Limit
D. N. Baker LASP – CU/Boulder

2 The Kennel-Petschek Limit
In 1966 paper, for electrons: ER = E0 W/w (1 - w/W)2 E0 = B2/8pn J*(> ER)= [(1-E0/ER)/(A-E0/ER)] x 1010B lnG/l J* (> 40 keV) ~ 7 x 1010/L4 (cm-2 s-1)

3 Electron Flux and Riometer Comparisons
[Baker et al., GRL, 1979]

4 Pitch Angle Evolution

5 Flux and Riometer Comparison

6

7 Summary of Flux Limits

8 Peak Fluxes vs. Riometer Intensity

9 Local Times of Strong Diffusion

10 Solar Wind Speed Dependence

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