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On the accuracy of thermionic electron emission models. I. Electron detachment from
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10.1063/1.3149782
/content/aip/journal/jcp/130/24/10.1063/1.3149782
http://aip.metastore.ingenta.com/content/aip/journal/jcp/130/24/10.1063/1.3149782
View: Figures

Figures

Image of FIG. 1.
FIG. 1.

Discrete distributions of electron energies in the detachment from at the energies (a), (b), and [(c) and (d)]. (d) shows with bins ; the continuous curve is from Eq. (2.12), see text.

Image of FIG. 2.
FIG. 2.

Specific rate constants for electron detachment from . Curves from top to bottom: (i) RRKM-type model without electron capture contributions, i.e., for ; (ii) pure electron capture model, i.e., ; (iii) electron capture with IVR contribution, i.e., ; (iv) electron capture with IVR and VEX contributions, i.e., . Full curves: Detailed calculations from Ref. 15; dashed curves for the upper three models: Simplified calculations with Eq. (3.9) from the present work, see text.

Image of FIG. 3.
FIG. 3.

Energy distribution of electrons from the detachment from ; full line: RRKM-type model; dashed line: electron capture VW model; dotted line: electron capture with IVR model; dash-dotted line with peak near : electron capture with IVR and VEX model, see text.

Image of FIG. 4.
FIG. 4.

Energy distribution of electrons from the detachment from ; full calculations: (a) RRKM-type model with , (b) electron capture VW-model with , and (c) -model with ; dashed functions (3.10) with exponents (d), 0.5 (e), and 1.0 (f).

Image of FIG. 5.
FIG. 5.

Average energy of electrons detached from at total energy . Full calculations; (a) RRKM-type model; (b) electron capture VW-model; (c) electron capture with model. Dashed emission results; (d) putting in Eq. (4.1); (e) including finite from Eqs. (4.1), (4.2), and (4.4); see text.

Image of FIG. 6.
FIG. 6.

Specific rate constants for electron detachment from [full curves: Detailed calculations identified in Fig. 2; dashed curves: Simplified thermionic emission approximations to the upper three detailed cases: The highest dashed curve is from Eqs. (4.5)–(4.8), the next uses (slightly corrected) Whitten–Rabinovitch densities of states for , and the lowest curve uses from Eqs. (4.1), (4.2), and (4.4), see text].

Image of FIG. 7.
FIG. 7.

Comparison of the daughter temperature , based on Eq. (4.1), and an effective or isokinetic temperature , from Eq. (4.9), in thermionic emission models of electron detachment from (detailed calculations of this work, see text).

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/content/aip/journal/jcp/130/24/10.1063/1.3149782
2009-06-24
2014-04-20
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: On the accuracy of thermionic electron emission models. I. Electron detachment from SF6−
http://aip.metastore.ingenta.com/content/aip/journal/jcp/130/24/10.1063/1.3149782
10.1063/1.3149782
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