A stationary afterglow apparatus with Cavity Ring-Down spectrometer was combined with electron number density measurement system to study the third-body assisted recombination of ${\mathrm{H}}_3^{+}$ ions with electrons in neon gas at the temperature of 110 K. The measured ternary recombination rate coefficient $K_{\mathrm{Ne}}(110\mathrm{K})=(1.8\pm 0.2)\times {10}^{-25}{\mathrm{cm}}^6{\mathrm{s}}^{-1}$ is close to that obtained in helium buffered plasma. The applicability of the present experimental setup for Einstein coefficients determination is also discussed.

中文翻译：

---

腔内衰荡光谱研究氖辅助重组 ${\mathrm{H}}_3^{+}$ 带电子的离子

将带有腔衰荡光谱仪的固定余辉仪与电子数密度测量系统结合使用，以研究第三体辅助重组 ${\mathrm{H}}_3^{+}$ 温度为110 K的氖气中带有电子的离子。测得的三元复合速率系数 ${ķ}_{\mathrm{NE}}（110\mathrm{ķ}）=（1.8\pm 0.2）\times {10}^{--25}{\mathrm{厘米}}^6{\mathrm{s}}^{--\mathrm{1个}}$接近于氦缓冲血浆中获得的水平。还讨论了本实验装置对爱因斯坦系数确定的适用性。