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The ejected-electron spectrum of Li I autoionising levels excited by low-energy electron impact on lithium vapour

The ejected-electron spectrum of lithium vapour has been observed at 75 degrees with respect to an incident electron beam of 80 eV, 200 eV and 500 eV kinetic energy. A total of 39 autoionising levels of Li I are observed in the energy range 56 eV to 65 eV. Comparison is made with experimental and theoretical data.

High-resolution ejected-electron spectra of K I and K II autoionising levels excited by low-energy electron impact on potassium vapour

The ejected-electron spectrum of potassium vapour has been observed at 50 degrees and 75 degrees with respect to an incident-electron beam of 30 to 400 eV incident energy. Ejected-electron energies are in the range 4 to 21.5 eV. A total of 84 autoionising states of K I are reported, of which 49 have been identified by comparison with ultraviolet absorption data. Some of the remaining levels are assigned tentatively using available theoretical data. In addition, three states belonging to the K II autoionisation spectrum are identified.

High-resolution ejected-electron spectrum of magnesium autoionising levels following two-electron excitation by low-energy electron impact

The ejected-electron spectrum of magnesium vapour following autoionisation of two-electron excited states of the type 1s22s22p63pnl is presented for the first time. Ejected electrons were energy analysed at 75 degrees to the direction of an incident electron beam of energy 17 to 500 eV. 46 lines are reported in the ejected-electron energy range 0.5 eV to 4.5 eV, of which 40 have been assigned to eight series. Comparisons are made with ultraviolet observations and theoretical calculations.

The ejected-electron spectrum of thallium vapour autoionising levels excited by low-energy electron impact

The ejected-electron spectrum of thallium vapour has been observed at 75 degrees with respect to an incident electron beam of 15-500 eV kinetic energy. A total of 92 ejected-electron lines corresponding to autoionisation processes in Tl I are reported. Hartree-Fock calculations together with data from photoabsorption measurements have been used to assign the observed lines where possible.

High-resolution ejected-electron spectrum of caesium vapour autoionising levels excited by 30 to 400 eV electrons

The ejected-electron spectrum of caesium vapour has been observed at 75 degrees with respect to an incident electron beam of 30 to 400 eV incident energy. A total of 63 autoionising states, between 8.3 and 13.4 eV ejected-electron energy, are reported. Of the observed states, 37 have been identified by comparison with ultraviolet absorption data.

The ejected-electron spectrum of cadmium vapour autoionizing levels excited by 15 to 400 eV electrons

The ejected-electron spectrum of cadmium vapour has been observed at angles up to 110 degrees with respect to an incident electron beam of kinetic energy 15 to 400 eV under high-resolution conditions. Comparisons are made with earlier ejected-electron spectra, ultraviolet absorption measurements and theoretical calculations. The spectrum is found to contain some lines which are not observed in optical studies. Angular distributions are found to exhibit pronounced maxima and minima in a number of cases.

High-resolution ejected-electron spectrum of calcium vapour autoionising levels excited by low-energy electron impact

The ejected-electron spectrum of calcium vapour between 12.8 and 28.1 eV has been observed at 75 degrees with respect to an incident electron beam of 30 to 500 eV energy. A total of 165 lines are reported, corresponding to excitation of both Ca I and Ca II levels. The results are compared with photoabsorption measurements and high-energy electron impact data.

The ejected electron spectrum of GaI and GaII autonionising transitions resulting from 13-500 eV electron impact excitation

The ejected electron spectrum of gallium vapour between 0-17.5 eV has been observed at 75 degrees to an incident electron beam of 13-500 eV kinetic energy. A total of 180 lines corresponding to autoionisation processes in Ga I and Ga II are reported. Hartree-Fock calculations together with data from ultraviolet absorption measurements have been used to make assignments to the ejected spectra where possible.

The ejected-electron spectrum of magnesium autoionising levels following two-electron excitation to states of the type 4snl by low-energy electron impact

The ejected-electron spectrum of magnesium vapour following autoionisation of two-electron excited states has been extended to the Mg+ 4s 2S1/2 limit. Observations were made at 75 degrees to the incident electron beam direction for a range of incident energies from 27 eV to 500 eV. In addition to the 4snp1P1 series which is observed in photoabsorption experiments a new series is reported corresponding to 4snp 3P1.

High-resolution ejected-electron spectrum of rubidium vapour autoionising levels excited by electrons with kinetic energies in the range 27 to 400 eV

A total of 66 autoionising states of Rb I have been observed between 15 and 21 eV excited-state energy, excitation being by electron impact at kinetic energies of 27, 40, 100 and 400 eV. Of the observed states, 40 have been reported in ultraviolet absorption experiments. The remaining 26 states do not appear in any previous data. Spectra are presented for electrons ejected at an angle of 75 degrees with respect to the incident electron beam.