Non-dissociative and dissociative ionization of CO, CO2 and CH4 by positron impact

H. Bluhme, N. P. Frandsen, F. M. Jacobsen, H. Knudsen, J. P. Merrison, R. Mitchell, K. Paludan, M. R. Poulsen

Research output: Contribution to journalArticle

20 Citations (Scopus)

Abstract

Cross sections for direct and total non-dissociative ionization of CO, CO2 and CH4 by positron impact have been measured for projectile energies ranging from threshold to 2000 eV. For CO and CO2 direct and total dissociative cross sections for several different fragments have been measured. The non-dissociative cross sections are observed to behave similarly to the single ionization cross sections of the light noble gases. The dissociative cross sections resemble that seen recently for N2, and can be related to models for double ionization of the light noble gases.

Original languageEnglish
Pages (from-to)5825-5834
Number of pages10
JournalJournal of Physics B: Atomic, Molecular and Optical Physics
Volume32
Issue number24
DOIs
Publication statusPublished - Dec 28 1999

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positrons
ionization
cross sections
rare gases
ionization cross sections
projectiles
fragments
thresholds
energy

ASJC Scopus subject areas

  • Physics and Astronomy(all)
  • Atomic and Molecular Physics, and Optics

Cite this

Bluhme, H., Frandsen, N. P., Jacobsen, F. M., Knudsen, H., Merrison, J. P., Mitchell, R., ... Poulsen, M. R. (1999). Non-dissociative and dissociative ionization of CO, CO2 and CH4 by positron impact. Journal of Physics B: Atomic, Molecular and Optical Physics, 32(24), 5825-5834. https://doi.org/10.1088/0953-4075/32/24/316

Non-dissociative and dissociative ionization of CO, CO2 and CH4 by positron impact. / Bluhme, H.; Frandsen, N. P.; Jacobsen, F. M.; Knudsen, H.; Merrison, J. P.; Mitchell, R.; Paludan, K.; Poulsen, M. R.

In: Journal of Physics B: Atomic, Molecular and Optical Physics, Vol. 32, No. 24, 28.12.1999, p. 5825-5834.

Research output: Contribution to journalArticle

Bluhme, H, Frandsen, NP, Jacobsen, FM, Knudsen, H, Merrison, JP, Mitchell, R, Paludan, K & Poulsen, MR 1999, 'Non-dissociative and dissociative ionization of CO, CO2 and CH4 by positron impact', Journal of Physics B: Atomic, Molecular and Optical Physics, vol. 32, no. 24, pp. 5825-5834. https://doi.org/10.1088/0953-4075/32/24/316
Bluhme, H. ; Frandsen, N. P. ; Jacobsen, F. M. ; Knudsen, H. ; Merrison, J. P. ; Mitchell, R. ; Paludan, K. ; Poulsen, M. R. / Non-dissociative and dissociative ionization of CO, CO2 and CH4 by positron impact. In: Journal of Physics B: Atomic, Molecular and Optical Physics. 1999 ; Vol. 32, No. 24. pp. 5825-5834.
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