Yes, clearly. And the high energy tail of electrons accelerated in the chromosphere can easily be associated with type II spicules. Jim's theory is all wet in other words ;-)
And if you start believing in Scudders ideas on coronal heating through velocity filtration I've got a good deal on a bridge between Brooklyn and Manhattan I can recommend.

Best wishes,
Viggo

On Jul 31, 2012, at 18:57 , Petrus Martens wrote:

On 7/31/12 10:42 AM, Charles C. Kankelborg wrote:
So, Anderson concluded that the velocity filtration model needed to be
redone with Coulomb collisions included. Dorelly and Scudder came back
in 2003 with a paper concluding that "the electron heat flux is
determined by the essentially collisionless high-energy tail" of the
distribution:

http://adsabs.harvard.edu/abs/2003JGRA..108.1294D

Does that mean the coulomb collisions don't really affect prediction of
energy transport? I haven't followed the trail of citations any farther...

Ah, now I remember!  The mean-free-path for high energy electrons is of
the order of the loop length (has to be be;  if it is longer there is
no coronal heating, if it is much shorter likewise).  So chromospheric
electrons in some energy range will contribute to coronal heating.  Now
the question is whether there will be enough of them.

Cheers,

Piet



Charles


On 2012 Jul 31, , at 9:27 AM, Dana Longcope wrote:

Stephen Anderson did a very thorough analysis of how Coulomb
collisions affect the model.

http://adsabs.harvard.edu/abs/1994ApJ...437..860A

dana

-----------------------------------------------------------
Dana Longcope    |     Dept. of Physics
Professor               |     Montana State University
(406) 994-7851    |     Bozeman, MT 59717
        dana@solar.physics.montana.edu



On Jul 31, 2012, at 9:20 AM, Petrus Martens wrote:


   Do you mean velocity filtration, where the corona is simply
particles from the
tail of the chromospheric distribution function?  That theory has
been largely discredited.

That's news to me.  Do you have a reference?

Piet



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