论文信息 - The production of de-excited H3+ ions and measurements of the energies of two electronically-excited states

The production of de-excited H3+ ions and measurements of the energies of two electronically-excited states

Five different ion sources were investigated to find one which produced currents of de-excited H3+ ions which are adequate for crossed beam experiments. An inclined beam technique was then used to measure absolute cross sections for energies between 15 and 22 eV, for the formation of protons by collisions between electrons and H3+. From the shape of the excitation function it was established that the H3+ ions had negligible internal energy and that they had two electronically-excited states with energies 15 and 19.2 eV above the lowest vibrational ground state. These energies are in satisfactory agreement with Kawaoka and Borkman's (1971) calculations of the energies of the 3E' and 1E' states of equilateral H3+.

B. Peart | K. Dolder

[1] B. Peart,et al. Collisions between electrons and H2+ ions. V. Measurements of cross sections for dissociative recombination , 1972 .

[2] E. W. Thomas,et al. FORMATION OF FAST EXCITED H ATOMS. III. COLLISIONAL DISSOCIATION OF H$sub 2$$sup +$ AND H$sub 3$$sup +$ ON HELIUM. , 1972 .

[3] A. Riviere,et al. Angular spread of hydrogen atoms formed by electron capture and dissociation of H+, H2+ and H3+ in H2, H2O and C8F16 at energies of 2?5 to 15 keV , 1972 .

[4] B. Peart,et al. Collisions between electrons and H2+ ions. I. Measurements of cross sections for proton production , 1971 .

[5] K. Kawaoka,et al. Single‐Center Calculations on the Electronically Excited States of Equilateral H3+ Ion , 1971 .

[6] R. Borkman. Single‐Center Configuration‐Interaction Calculations on the Ground State of H3+ , 1970 .

[7] T. F. Moran,et al. H+3 vibrational frequencies from ion impact spectroscopy , 1970 .

[8] L. Friedman,et al. Energy Transfer in the De‐excitation of (H3+) by H2 , 1969 .

[9] L. Friedman,et al. Experimental Determination of D3+ Dissociation Energy , 1968 .

[10] L. J. Schaad,et al. Ab Initio Studies of Small Molecules Using 1s Gaussian Basis Functions. II. H3 , 1967 .

[11] R. Christoffersen. Configuration‐Interaction Study of the Ground State of the H3+ Molecule , 1964 .

[12] G. Handler,et al. Use of Polar Coordinates for Molecular Wave Functions , 1957 .