ELECTRON-ION COINCIDENCE MEASUREMENTS : THE NEUTRAL DISSOCIATION PLUS EXCITATION CROSS SECTION FOR N2
ELECTRON-ION COINCIDENCE MEASUREMENTS : THE NEUTRAL DISSOCIATION PLUS EXCITATION CROSS SECTION FOR N2
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电子离子符合测量：N2 的中性解离加激发截面
DOI：
10.1063/1.475569
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发表时间：
1998
影响因子：
4.4
通讯作者：
R. Bonham
中科院分区：
文献类型：
--
作者：
L. Mi;R. Bonham
脉冲电子束飞行时间测量了分子氮在28°，45°，71°，112°和135°散射角下的电子能量损失谱，冲击能分别为24.5,33.1和33.6 eV，与正离子一致。测量了角相关弹性截面、总非弹性截面、电离截面和中性解离和激发截面。对每个散射角的电子能量损失进行积分。然后将这些与角度相关的数据用光滑解析函数进行拟合，并在角度上进行积分以获得单个总截面。通过与文献中报道的总横截面测量值相匹配，将所有横截面数据置于绝对尺度上。弹性散射和全非弹性散射的角相关截面和积分截面与文献值吻合较好。得到的中性解离加激发截面值与预…
Pulsed electron beam time-of-flight measurements of the electron energy loss spectrum of molecular nitrogen at scattering angles of 28°, 45°, 71°, 112°, and 135° were made at impact energies of 24.5, 33.1, and 33.6 eV in coincidence with positive ions. The angular-dependent elastic, total inelastic, ionization, and neutral dissociation plus excitation cross sections were measured. The data were integrated over electron energy loss for each scattering angle. These angular-dependent data were then fitted with smooth analytic functions and integrated over angle to obtain individual total cross sections. All cross-section data were placed on an absolute scale by matching to total cross-section measurements reported in the literature. The angular-dependent elastic cross section and the integrated cross sections for elastic and total inelastic scattering were found to be in good agreement with literature values. Values obtained for the neutral dissociation plus excitation cross section agree with the sum of pre...