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首页> 外文期刊>Journal of Physics, D. Applied Physics: A Europhysics Journal >Determination of diffusion, reflection and deexcitation coefficients of metastable excited Ne(P-3(2)) atom
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Determination of diffusion, reflection and deexcitation coefficients of metastable excited Ne(P-3(2)) atom

机译：亚稳激发NE的扩散，反射和脱释系数的测定（P-3（2））原子

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摘要

The diffusion coefficient of the metastable excited Ne(P-3(2)) atom in neon, the reflection coefficient of Ne(P-3(2)) at the surface of an electrode and the rate coefficient of Ne(P-3(2)) for collisional quenching by Ne(S-1(0)) were determined from the gas pressure dependence of the effective lifetime of Ne(P-3(2)). The effective lifetime of Ne(P-3(2)) was measured from the transient current after turning off the Ultraviolet (UV) light in a Townsend discharge. The observed transient current waveform was analysed by solving the diffusion equation for the metastable excited Ne(P-3(2)) atom using the third kind of boundary condition. The rate coefficient of Ne(P-3(2)) for collisional quenching by Ne(S-1(0)) and the reflection coefficient were determined by a nonspectroscopic method for the first time in neon to the best of our knowledge and were (3.2 +/- 0.4) x 10(-16) cm(3) s(-1) and 0.10 +/- 0.04, respectively. The obtained diffusion coefficient at 1 Torr was 177 +/- 17 cm(2) s(-1), which is consistent with the value reported by Dixon and Grant. Moreover, the present results are compared with the results of Phelps and were found to be in good agreement. We also discuss the deexcitation rate of Ne(P-3(2)) at pressures of up to 60 Torr in comparison with previously reported values.
机译：亚稳兴奋氖在氖（P-3（2））原子，氖（P-3（2））中的一个电极的表面上的反射系数和Ne的速率系数的扩散系数（P-3（ 2）），用于通过氖（S-1（0））碰撞猝灭从氖（P-3（2））的有效寿命的气体压力的依赖性决定的。氖（P-3（2））从瞬变电流测量在放电汤森关闭紫外线（UV）光后的有效寿命。所观察到的瞬态电流波形是由求解亚稳激发氖使用第三种边界条件（P-3（2））原子扩散方程进行分析。氖（P-3（2））的用于碰撞猝灭速率系数的Ne（S-1（0））和反射系数由一个nonspectroscopic方法首次在氖确定为我们所知的并且是（3.2 +/- 0.4）×10（-16）厘米（3）S（-1），分别0.10±0.04。在1乇所获得的扩散系数为177±17厘米（2）S（-1），这是与由Dixon和格兰特报告的值是一致的。此外，目前的结果与菲尔普斯的结果进行了比较，结果发现是很好的一致性。我们还讨论了在达到60托的压力下氖（P-3（2））的去激励率与以前报道值进行比较。

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