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The discussed paper strongly criticises the capability of 3D PIC codes for describing the extraction physics of negative hydrogen ions generated via the surface conversion process using caesium. A strong… Click to show full abstract
The discussed paper strongly criticises the capability of 3D PIC codes for describing the extraction physics of negative hydrogen ions generated via the surface conversion process using caesium. A strong disagreement of the obtained results with the experimental results is pointed out as well. On the other hand, the capability for experimental validation of the 2D PIC used by the authors is highlighted. This comment is dedicated to put one of codes, namely, the ONIX code in perspective concerning assumptions made and results obtained in correlation with the experiments and on the other hand to comment on the assumptions and observations made with the 2D PIC model.
Journal Title: Plasma Sources Science and Technology
Year Published: 2017
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