Fit Function: SPTEEX

\[Y(E) = \frac{q}{2} \frac{\left( \frac{E}{E_\mathrm{th}} - 1 \right)^\mu \ln(1 + 1.2288\epsilon)}{\lambda + \left( \frac{E}{E_\mathrm{th}} - 1 \right)^\mu \left[ \epsilon + 0.1728\sqrt{\epsilon} + 0.008\epsilon^{0.1504} \right]}\]

Coefficients

• lambda = 1.474
• q = 0.3193
• mu = 1.699
• epsilonL = 0.00139
• Eth = 12.33

Fit range

E = 12.33 – 100000