Symbol in context

$E_R$

This entry links every published equation using this exact notation. Its meaning may change between equations.

Meanings in context

Article-grounded definition

the resonance energy above the reacting threshold [ 5 ].

\langle \sigma v \rangle_{3\alpha} \;\propto\; \frac{\Gamma_\alpha}{\Gamma}\,\Gamma_{\mathrm{rad}}\; \exp\!\left(-\frac{E_R}{k_{B}T}\right)

This mathematical expression combines the displayed quantities; its precise role follows from the surrounding article text.

E_R

the resonance energy above the reacting threshold [ 5 ].