Time-of-flight electron scattering from molecular hydrogen: Benchmark cross sections for excitation of the X 1 Sg+ ?b 3 Su+ transition
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© 2018 American Physical Society. The electron impact X1Sg+?b3Su+ transition in molecular hydrogen is one of the most important dissociation pathways to forming atomic hydrogen atoms, and is of great importance in modeling astrophysical and industrial plasmas where molecular hydrogen is a substantial constituent. Recently, it has been found that the convergent close-coupling (CCC) cross sections of Zammit et al. [Phys. Rev. A 95, 022708 (2017)10.1103/PhysRevA.95.022708] are up to a factor of 2 smaller than the currently recommended data. We have determined normalized differential cross sections for excitation of this transition from our experimental ratios of the inelastic to elastic scattering of electrons by molecular hydrogen using a transmission-free time-of-flight electron spectrometer, and find excellent agreement with the CCC calculations. Since there is already excellent agreement for the absolute elastic differential cross sections, we establish benchmark differential and integrated cross sections for the X1Sg+?b3Su+ transition, with theory and experiment being essentially in complete agreement.
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Abdurakhmanov, Ilkhom (2011)This thesis is devoted to extension of the convergent close-coupling (CCC) method to heavy projectiles and its application to the theoretical studies of antiproton scattering on the hydrogen and helium targets.In the ...
Low-energy electron scattering from molecular hydrogen: Excitation of the X 1 Sg+ to b 3 Su+ transitionZawadzki, M.; Wright, R.; Dolmat, G.; Martin, M.; Diaz, B.; Hargreaves, L.; Coleman, D.; Fursa, Dmitry; Zammit, M.; Scarlett, Liam; Tapley, J.; Savage, J.; Bray, Igor; Khakoo, M. (2018)We present time-of-flight differential cross-section measurements and convergent close-coupling calculations of differential cross sections for the electron-impact excitation of the XSg+1?bSu+3 transition in molecular ...
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