檢視 $ifimpact ion 的原始碼

$ifimpact_ion is a function to turn on the impact ionization. It is a field and current dependent function which will rely on the electric field in the simulation program. <br>

The impact ionization generation rate is decided by <br><br>

<math>
G_{impact} =  \frac{|Jn|}{e} \times \alpha_n +\frac{|Jp|}{e} \times \alpha_p 
</math><br><br>
<math>
\alpha_{n} = a_{n}*exp\left( - \left| \left(\frac{b_{n}|Jn|}{\vec{E}\cdot \vec{Jn}}\right)^{c_{n}} \right|\right)
</math><br><br>
<math>
\alpha_{n} = a_{p}*exp\left( - \left| \left(\frac{b_{p}|Jp|}{\vec{E}\cdot \vec{Jp}}\right)^{c_{p}} \right|\right)
</math><br><br>

The way to input this command is <br>
 $ifimpact_ion
 <math>a_{n}~~ b_{n}~~ c_{n}~~ a_{p}~~ b_{p}~~ c_{p}   </math>
 <math>a_{n}~~ b_{n}~~ c_{n}~~ a_{p}~~ b_{p}~~ c_{p}   </math>
 <math>a_{n}~~ b_{n}~~ c_{n}~~ a_{p}~~ b_{p}~~ c_{p}   </math>
 <math>a_{n}~~ b_{n}~~ c_{n}~~ a_{p}~~ b_{p}~~ c_{p}   </math>
 ...
 ...
 ...  repeat for n-layers

<big>'''The $ifimpact_ion setting for 1D-DDCC in GUI interface '''</big> <br>

1.Press the '''Additional Functions'''.<br>
2.Press the '''Inpact Ionization'''.<br>
3.Choose you need parameters.<br>
4.You can modify parameters in Number 4.<br>
Number 4 correspond to <math>a_{n}~~ b_{n}~~ c_{n}~~ a_{p}~~ b_{p}~~ c_{p}   </math>

[[檔案:1d_$ifimpact_ion_fig1.jpg|1300px]]