Electron-impact cross sections involving electronically excited states in H{sub 2} molecules: {ital B}{sup 1}{Sigma}{sup +}{sub {ital u}}{r_arrow}{ital I}{sup 1}{Pi}{sub {ital g}} transition

Journal Article · Mon Jul 01 00:00:00 EDT 1996 · Physical Review A

DOI:https://doi.org/10.1103/PhysRevA.54.432· OSTI ID:285931

Celiberto, R; Capitelli, M; Durante, N; Lamanna, U T ^[1]

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1. Dipartimento di Chimica Universita di Bari and Centro di Studio per la Chimica dei Plasmi del Consiglio Nazionale delle Ricerche, Bari (Italy)

Electron-impact cross sections for the process H{sub 2}({ital B}{sup 1}{Sigma}{sup +}{sub {ital u}},{nu}{sub {ital i}})+{ital e}{r_arrow}H{sub 2}({ital I}{sup 1}{Pi}{sub {ital g}})+{ital e} have been calculated as a function of the collision energy and for different vibrational quantum numbers {nu}{sub {ital i}} in the frame of impact-parameter method. Total and dissociative cross sections are compared with those referred to electronic transitions involving the ground electronic state of H{sub 2} ({ital X}{sup 1}{Sigma}{sup +}{sub {ital g}}{r_arrow}{ital B}{sup 1}{Sigma}{sup +}{sub {ital u}} and {ital X}{sup 1}{Sigma}{sup +}{sub {ital g}}{r_arrow}{ital C}{sup 1}{Pi}{sub {ital u}}). Moreover, rate coefficients as a function of the vibrational state of the molecule are reported for different temperatures and for both {ital B}{r_arrow}{ital I} and {ital X}{r_arrow}{ital B} transitions, briefly discussing the role of these two processes in the H{sup {minus}} negative-ion production. {copyright} {ital 1996 The American Physical Society.}

• OSTI ID: 285931
• Journal Information: Physical Review A, Vol. 54, Issue 1; Other Information: PBD: Jul 1996
• Country of Publication: United States
• Language: English

Related Subjects

66 PHYSICS
HYDROGEN COMPOUNDS
ELECTRON-MOLECULE COLLISIONS
EXCITED STATES
CROSS SECTIONS
VIBRATIONAL STATES
HYDROGEN IONS 1 MINUS
DISSOCIATION
ELECTRONIC STRUCTURE
ENERGY-LEVEL TRANSITIONS
TEMPERATURE DEPENDENCE
HYDROGEN MOLECULES