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Numerical study of atomic production rate in hydrogen negative ion sources with the effect of non-equilibrium electron energy distribution function
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10.1063/1.4824366
/content/aip/journal/jap/114/14/10.1063/1.4824366
http://aip.metastore.ingenta.com/content/aip/journal/jap/114/14/10.1063/1.4824366

Figures

Image of FIG. 1.
FIG. 1.

Spatial non-uniformity in extracted negative ions and incidence of negative ions to the acceleration grids.

Image of FIG. 2.
FIG. 2.

Schematic drawing of the JAEA 10 ampere (10 A) negative ion source.

Image of FIG. 3.
FIG. 3.

Schematic diagram of spectroscopic measurement in the 10 A source and positions of EEDF calculation in the driver region (Z = 80–100 mm).

Image of FIG. 4.
FIG. 4.

EEDF at positions A–E in Fig. 3 (cited from Ref. 17 ).

Image of FIG. 5.
FIG. 5.

Cross-sections of the reactions #1-5 in Table I .

Image of FIG. 6.
FIG. 6.

Contour map of the H0 production rate in XY plane of the 10 A source.

Image of FIG. 7.
FIG. 7.

Spatial profiles of the calculated H0 production rate from the total EEDF in Fig. 4 (blue circles), the calculated H0 production rate with only the thermal electron component ( < 25 eV) of the EEDF (green squares), and measured H line intensity (red triangles).

Image of FIG. 8.
FIG. 8.

Contour map for the reaction rates of (a) the reaction #1 and (b) the reaction #5.

Tables

Generic image for table
Table I.

Main reactions taken into account in the analysis.

Generic image for table
Table II.

Rate coefficients of dissociative ionization for each vibrational level.

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/content/aip/journal/jap/114/14/10.1063/1.4824366
2013-10-10
2014-04-21
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Numerical study of atomic production rate in hydrogen negative ion sources with the effect of non-equilibrium electron energy distribution function
http://aip.metastore.ingenta.com/content/aip/journal/jap/114/14/10.1063/1.4824366
10.1063/1.4824366
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