Re: secondary electrons

Dear Shlomo,

> i'm interesting how to obtain the energy distribution and the creation
> (x,y,z, direction and energy) of the secondary electrons that produced
> by a beam of alph particle as a primary particle

you can intercept electrons at their generation in the USDRAW entry of the
mgdraw user routine. There, ICODE refers to the generation process (I
would say mainly 103 - delta ray generation - in your case) and XSCO,
YSCO, ZSCO give the generation point. Through (GENSTK) you can
search among the np secondaries for electrons (kpart(ip)=3) and get their
direction and energy/momentum. You may want to suitably set the threshold
for delta ray production (DELTARAY card).

Ciao

Francesco

**************************************************
Francesco Cerutti
CERN-AB
CH-1211 Geneva 23
Switzerland
tel. ++41 22 7678962
fax ++41 22 7668854
Received on Sat Aug 2 10:19:55 2008