2012
DOI: 10.1088/0953-4075/45/10/105203
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Electron and photon dissociation cross sections of the D2singlet ungerade continua

Abstract: The dissociation of H2 and its isotopologues through excitation to the singlet ungerade continua is one of the major channels for the production of slow hydrogen atoms at high temperature (T > 10 000 K) and electron energy >25 eV. State-specific photodissociation cross sections and oscillator strengths for molecular deuterium from the X 1Σ+g(vi, Ji) levels to the continuum levels of the B 1Σ+u, C 1Πu, B′ 1Σ+u, D 1Πu, B, D′ 1Πu and 5pσ 1Σ+u states have been calculated. The corresponding (vi, Ji) state-specific … Show more

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Cited by 6 publications
(3 citation statements)
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“…It is implicitly assumed that the extracted collision parameters C m / C 7 ( m = 0–5) and C 8 are identical to the entire A 1 Π(0)– X 1 Σ + band system. Note that the absolute value of C 7 itself may be calculated from absorption oscillator strength and transition energy (Liu et al, ). Here the direct excitation collision parameter coefficients are listed in the second column of Table .…”
Section: Modeling Of the A1π State Excitation Cross Sectionmentioning
confidence: 99%
“…It is implicitly assumed that the extracted collision parameters C m / C 7 ( m = 0–5) and C 8 are identical to the entire A 1 Π(0)– X 1 Σ + band system. Note that the absolute value of C 7 itself may be calculated from absorption oscillator strength and transition energy (Liu et al, ). Here the direct excitation collision parameter coefficients are listed in the second column of Table .…”
Section: Modeling Of the A1π State Excitation Cross Sectionmentioning
confidence: 99%
“…Furthermore, a proper treatment of dissociation (including excitation-radiative-decay dissociation) requires collision data resolved not only in the electronic levels, but in the initial and final vibrational levels, which vastly increases the computational expense of the calculations. Prior to the CCC estimates of dissociation [6], calculations were limited to low incident energies where only a small number of reaction channels are open [8][9][10], or large energies where the Born approximation may be applied [11]. No attempts were made to produce a dissociation cross section including all reaction channels over a wide range of incident energies.…”
Section: Introductionmentioning
confidence: 99%
“…Since deuterium and tritium will be the main fuel for experimental fusion reactors, their spectra are important diagnostic tools to study the various molecular hydrogen isotopologues produced in the nuclear reactions. These D 2 and T 2 fuels will be heated to extremely high temperatures, so that it is important to characterize the plasma dynamics, for which the excitation cross-sections induced either by photons or electrons are of relevance [8].…”
Section: Introductionmentioning
confidence: 99%