Production of ground state OH following electron impact on H2O

Harb, Tarek; Kedzierski, W.; McConkey, J W

doi:10.1063/1.1397327

Cited by 76 publications

(79 citation statements)

References 38 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Thus, when subtracting the ionization and the electronic excitation cross sections from the calculated integral inelastic cross sections, the resulting data should correspond to neutral dissociation. The good agreement with experimental results (Kedzierski et al, 1998;Harb et al, 2001) confirms this assignment. Elastic cross sections are based on experimental data from Cho et al (2004) but include a correction for contamination with rotationally inelastic scattering.…”

Section: Cross Section Datasupporting

confidence: 88%

LEPTS – a Radiation-Matter Interaction Model at the Molecular Level and its Use in Biomedical Applications

Fuß¹,

Sanz²,

Muñoz³

et al. 2011

Biomedical Engineering, Trends in Electronics, Communications and Software

View full text Add to dashboard Cite

Section: Cross Section Datasupporting

confidence: 88%

LEPTS – a Radiation-Matter Interaction Model at the Molecular Level and its Use in Biomedical Applications

Fuß¹,

Sanz²,

Muñoz³

et al. 2011

Biomedical Engineering, Trends in Electronics, Communications and Software

View full text Add to dashboard Cite

“…Finally, we note that the results from an experiment by Harb et al 66 6 may suffer from a systematic error. Hence it is possible that this might also explain, at least in part, the discrepancy between the two measurements.…”

Section: E Discussion On Integral Cross Sectionsmentioning

confidence: 74%

Cross sections and oscillator strengths for electron-impact excitation of the ÃB11 electronic state of water

Thorn

Brunger²,

Teubner³

et al. 2007

The Journal of Chemical Physics

View full text Add to dashboard Cite

The authors report absolute differential and integral cross section measurements for electron-impact excitation of the ÃB11 electronic state of water. This is an important channel for the production of the OH (X̃Π2) radical, as well as for understanding the origin of the atmospheric Meinel [Astrophys. J. 111, 555 (1950)] bands. The incident energy range of our measurements is 20–200eV, while the angular range of the differential cross section data is 3.5°–90°. This is the first time such data are reported in the literature and, where possible, comparison to existing theoretical work, and new scaled Born cross sections calculated as a part of the current study, is made. The scaled Born cross sections are in good agreement with the integral cross sections deduced from the experimental differential cross sections. In addition they report (experimental) generalized oscillator strength data at the incident energies of 100 and 200eV. These data are used to derive a value for the optical oscillator strength which is found to be in excellent agreement with that from an earlier dipole (e,e) experiment and an earlier photoabsorption experiment.

show abstract

“…Studies elucidating the electron-impact excitation, ionization and dissociation of water have been conducted by many others. [17][18][19][20] At gas densities approaching atmospheric levels encountered in many practical situations, some of the excited states are quenched and do not lead to the emission of photons. Quenching in liquid water can be even more rapid.…”

Section: The Molecular Structure Of Vapor Phase Water and Its Excitatmentioning

confidence: 99%

Some Physics and Chemistry of Electrosurgical Plasma Discharges

Stalder

Woloszko

2007

Contrib. Plasma Phys.

View full text Add to dashboard Cite

The physics of nonequilibrium microplasmas produced by electrical discharges in saline environments are described. Electrosurgical devices employing such discharges are finding increased use in surgical procedures requiring fine control of the tissue excision, cauterization, or debulking process. Optical spectroscopy, electrical diagnostics and gas analysis are the primary experimental methods used to study the plasmas. Water is dissociated in the plasma by electron impact processes principally into chemically‐active atomic hydrogen and hydroxyl radicals, which can subsequently interact with fibrous collagenous tissue surfaces to cut and coagulate tissue. The molecular potential energy curves of water are used to explain some features of the plasma‐induced chemistry. The Franck‐Condon principle is used to show that the fragments from electron‐impact‐dissociated water can possess excess kinetic energy, thereby enhancing their surface reactivity. Energetic electrons from the plasma can also interact directly with the tissue surface and cause fragmentation of surface proteins. Chemical kinetics simulations of water vapor periodically irradiated by energetic electrons shows that many chemical species are formed, including reactive radicals that may play a role in tissue modification useful for surgical procedures. (© 2007 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)

show abstract

Production of ground state OH following electron impact on H2O

Cited by 76 publications

References 38 publications

LEPTS – a Radiation-Matter Interaction Model at the Molecular Level and its Use in Biomedical Applications

LEPTS – a Radiation-Matter Interaction Model at the Molecular Level and its Use in Biomedical Applications

Cross sections and oscillator strengths for electron-impact excitation of the ÃB11 electronic state of water

Some Physics and Chemistry of Electrosurgical Plasma Discharges

Contact Info

Product

Resources

About