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Table 3:

PAH destruction analytical fit parameters and survival timescales for electron and ion collisions.
  Electron Ion Fit
  $N_{\rm C}$ = 50 $N_{\rm C}$ = 200 $N_{\rm C}$ = 50 $N_{\rm C}$ = 200 parameters
$\varepsilon(v_{\rm S7}) = m_{1}x+q_{1}$ $0.50 \leq v_{\rm S7}\leq 0.75$ -- -- -- m1 = 0.464 q1 = -0.232
$\varepsilon(v_{\rm S7}) = m_{2}x+q_{2}$ $0.75 \leq v_{\rm S7}\leq 1.00$ -- -- -- m2 = 3.536 q2 = -2.536
$\varepsilon(v_{\rm S7}) = m_{3}x+q_{3}$ -- -- -- $0.50 \leq v_{\rm S7}\leq 1.50$ m3 = 0.879 q3 = -0.319
$\varepsilon(v_{\rm S7}) = a x^{b}$ -- -- $0.50 \leq v_{\rm S7}\leq 1.50$ -- $\;\;a$ = 0.405 b = 2.232
$\varepsilon(v_{\rm S7}) = c~\ln~(x^{d})~/x$ -- $0.50 \leq v_{\rm S7}\leq 1.50$ -- -- $\;\;c$ = 5.366 d = 0.7
$\varepsilon(v_{\rm S7}) = k$ $1.00 \leq v_{\rm S7}\leq 2.00$ $1.50 \leq v_{\rm S7}\leq 2.00$ $1.50 \leq v_{\rm S7}\leq 2.00$ $1.50 \leq v_{\rm S7}\leq 2.00$ k = 1
$t_{\rm SNR}$(yr) 1.6 $\times$108 4.0 $\times$108 1.8 $\times$108 1.4 $\times$108    

Notes. Fit parameters and survival timescales calculated assuming T0 = 7.5 eV and E0 = 4.6 eV.


Source LaTeX | All tables | In the text

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