Re: experimental measurement of electron diameter?
- From: mmeron@xxxxxxxxxxxxxxxxxx
- Date: Wed, 13 Jul 2005 04:48:03 GMT
In article <db1sr101tko@xxxxxxxxxxxxxxxxxx>, Bob Cain <arcane@xxxxxxxxxxxxxxxxx> writes:
>
>
>mmeron@xxxxxxxxxxxxxxxxxx wrote:
>
>> In applications you'll find the term "form factor". The cross section
>> of a finite size target is of the form of a convolution of a cross
>> section for a zero sized one and a form factor representing the
>> distribution of whatever it is in the target that does the interacting
>> (so the form factor for a point target is a delta function). Thus, if
>> there is a difference between the measured cross section and the
>> theoretical one for point target, you can use this difference to
>> estimate the size and often even the distribution.
>
>Thank you! I actually understand that. :-)
>
Oh, I was sure you will. Just forgot to add that the business of
comparing cross section for a point target with this for a finite size
one is pretty much the same as comparing a circuit response to an impulse
(delta function) signal, with this to a signal of finite width. Same
idea.
Mati Meron | "When you argue with a fool,
meron@xxxxxxxxxxxxxxxxx | chances are he is doing just the same"
.
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