Dissociative ionization of H 2 , D 2 , and HD using electron-impact excitation
Dissociative ionization of H 2 , D 2 , and HD using electron-impact excitation
复制标题
使用电子碰撞激发进行 H 2 、D 2 和 HD 的解离电离
DOI：
10.1103/physreva.21.1841
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发表时间：
1980
影响因子：
2.9
通讯作者：
W. Lamb
中科院分区：
文献类型：
--
作者：
M. Burrows;L. C. McIntyre;S. R. Ryan;W. Lamb
Kinetic-energy distributions of ion fragments from electron-impact bombardment of ${\mathrm{H}}_{2}$, ${\mathrm{D}}_{2}$, and HD have been measured at electron energies between 30 and 100 eV. In the case of ${\mathrm{H}}_{2}$ these distributions at 90\ifmmode^\circ\else\textdegree\fi{} are interpreted as resulting from excitation of two autoionizing states of ${\mathrm{H}}_{2}$ ($^{1}\ensuremath{\Sigma}_{g}^{+}$ and $^{1}\ensuremath{\Pi}_{u}$) and one repulsive state of ${\mathrm{H}}_{2}^{+}(^{2}\ensuremath{\Pi}_{u})$. The shapes of the kinetic-energy distributions for ${\mathrm{H}}^{+}$ from ${\mathrm{H}}_{2}$ and ${\mathrm{D}}^{+}$ from ${\mathrm{D}}_{2}$ are substantially different, and a strong preference for ${\mathrm{H}}^{+}$ over ${\mathrm{D}}^{+}$ fragments from HD was observed.
Kinetic-energy distributions of ion fragments from electron-impact bombardment of ${\mathrm{H}}_{2}$, ${\mathrm{D}}_{2}$, and HD have been measured at electron energies between 30 and 100 eV. In the case of ${\mathrm{H}}_{2}$ these distributions at 90\ifmmode^\circ\else\textdegree\fi{} are interpreted as resulting from excitation of two autoionizing states of ${\mathrm{H}}_{2}$ ($^{1}\ensuremath{\Sigma}_{g}^{+}$ and $^{1}\ensuremath{\Pi}_{u}$) and one repulsive state of ${\mathrm{H}}_{2}^{+}(^{2}\ensuremath{\Pi}_{u})$. The shapes of the kinetic-energy distributions for ${\mathrm{H}}^{+}$ from ${\mathrm{H}}_{2}$ and ${\mathrm{D}}^{+}$ from ${\mathrm{D}}_{2}$ are substantially different, and a strong preference for ${\mathrm{H}}^{+}$ over ${\mathrm{D}}^{+}$ fragments from HD was observed.