PPT Slide

Fisher et al., 1985a,b made distinction between gentle and explosive evaporation

Gentle evaporation ? Velocities < 100 km/s

Upflow velocities depend crucially on total flux of electrons. Fisher et al. (1985a,b): F ~ (E/Ec)-d : d = 4 ; Ec = 20 keV Mariska et al. (1989): F ~ (E/Ec)-d : d = 6 ; Ec = 15 keV

f = 109 ergs/cm2/s ? Vupflow < 30 km/s
f =1010 ergs/cm2/s ? Vupflow ~ 130 km/s

f = total incident electron energy flux

f=1010 ergs/cm2/s ? Vupflow ? 200 km/s

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