Electron-impact excitation of xenon at incident energies between 15 and 80 eV.
Electron-impact excitation of xenon at incident energies between 15 and 80 eV.
复制标题
氙在 15 至 80 eV 之间的入射能量下的电子碰撞激发。
DOI：
10.1103/physreva.37.356
复制
发表时间：
1988
期刊：
影响因子：
--
通讯作者：
And L. Vusković
中科院分区：
文献类型：
--
作者：
D. Filipović;B. Marinković;V. Pejčev;And L. Vusković
标准化，绝对微分截面（DCS的）已被测量的氙的20个最低的电子状态。入射电子能量为15、20、30和80 eV，散射角范围为5/sup 0/至150/sup 0/。能量分辨率为40 meV。通过将相对值归一化为Register等人最近发表的绝对弹性DCS（J. Phys. B 19，1685（1986）），已经获得了绝对弹性DCS。在不同的入射能量下，测定了6s（（3/2）/sub 1/ state）的弹性与非弹性强度比。这些比值被用作二级标准，以建立根据能量损失谱线的强度比的其他非弹性过程的绝对尺度。将绝对非弹性DCS外推到0/sup 0/和180/sup 0/，并积分以产生积分横截面（ICS）。本DCS的与唯一可用的测量在20 eV的冲击能量的比较显示出令人满意的一致性的形状，但在绝对值上有相当大的差异。
Normalized, absolute differential cross sections (DCS's) have been measured for the 20 lowest electronic states of xenon. Incident electron energies were 15, 20, 30, and 80 eV and the scattering angles ranged from 5/sup 0/ to 150/sup 0/. The energy resolution was 40 meV. Absolute elastic DCS's have been obtained by normalizing the relative values to the recently published absolute elastic DCS's by Register et al. (J. Phys. B 19, 1685 (1986)). Elastic-to-inelastic intensity ratios, at different incident energies for the 6s((3/2)/sub 1/ state were determined. These ratios were utilized as secondary standards to establish the absolute scale for the other inelastic processes in accordance with intensity ratios of lines in energy-loss spectra. The absolute inelastic DCS's were extrapolated to 0/sup 0/ and 180/sup 0/ and integrated to yield the integral cross sections (ICS's). A comparison of the present DCS's with the only available measurements at 20 eV impact energy shows satisfactory agreement in shape but considerable difference in absolute value.