Generalized Oscillator Strength of the à ← X̃ Transition of Ammonia
Generalized Oscillator Strength of the à ← X̃ Transition of Ammonia
复制标题
氨的 ← X̃ 转变的广义振荡强度
DOI：
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复制
发表时间：
1971
期刊：
影响因子：
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通讯作者：
E. N. Lassettre
中科院分区：
文献类型：
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作者：
W. Harshbarger;A. Skerbele;E. N. Lassettre
用电子碰撞谱法测定了NH_3中A ← X跃迁的广义振子强度。使用高分辨率光谱仪测量相对于弹性散射的最强振动峰6.390 eV的强度。这些强度比用于确定在电子动能为300、400和500 eV以及散射角在2°-7°之间时的非弹性截面。通过与Bromberg测量的NH3的绝对弹性截面（未发表的工作）进行比较，将这些非弹性截面置于绝对基础上。广义振子强度，整合在所有的过渡振动条款，外推到零动量变化与光学值进行比较。外推振子强度为0.0696 ± 0.006。
The generalized oscillator strength for the A ← X transition in NH3 has been determined by electron impact spectroscopy. A high‐resolution spectrometer was used to measure the intensity of the strongest vibrational peak, 6.390 eV, relative to the elastic scattering. These intensity ratios were used to determine inelastic cross sections at electron kinetic energies of 300, 400, and 500 eV and scattering angles between 2°–7°. These inelastic cross sections were put on an absolute basis by comparison with absolute elastic cross sections for NH3, measured by Bromberg (unpublished work). The generalized oscillator strength, integrated over all vibrational terms of the transition, was extrapolated to zero momentum change for comparison with optical values. The extrapolated oscillator strength is 0.0696 ± 0.006.