کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1192438 1492351 2008 5 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Dissociation and fragmentation of furan by electron impact
موضوعات مرتبط
مهندسی و علوم پایه شیمی شیمی آنالیزی یا شیمی تجزیه
پیش نمایش صفحه اول مقاله
Dissociation and fragmentation of furan by electron impact
چکیده انگلیسی

Dissociation and fragmentation processes that produce electronically excited atomic and molecular fragments, following electron impact excitation, have been studied in furan. The optical excitation technique has been employed over the electron incident energy range 15–95 eV. Formation of excited hydrogen atoms H(n) in the n = 4–10 states has been detected by observation of the Balmer series. The diatomic CH fragments are formed in the A2Δ, B2Σ− and C2Σ− electronic states and the C2 fragments in the d3Πg excited state. The appearance energies for the H(n = 4) (Hβ line) and the CH(A2Δ) (A2Δ → X2Πr transition) fragments have been measured to be 20.7 ± 0.4 and 19.0 ± 0.3 eV, respectively. Absolute emission cross sections have been also determined for the above two transitions in the electron energy range from the appearance energy thresholds up to 95 eV. Possible dissociation and fragmentation processes are discussed.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: International Journal of Mass Spectrometry - Volume 277, Issues 1–3, 1 November 2008, Pages 52–56
نویسندگان
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