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|Type:||Artigo de evento|
|Title:||On Correction Factor In Scaling Law For Low Pressure Dc Gas Breakdown|
|Abstract:||The low pressure gas breakdown described by Paschen's law in Townsend theory, i.e. the breakdown voltage as a function of gas pressure p and the electrode distance d, provides an accurate description of breakdown in DC discharges when the ratio between inter-electrode gap distance d and electrode radii R tends to zero. On increasing of the ratio d/R, the Paschen's curves are shifted to the region of higher breakdown voltage and higher pd values. A modified Paschen's law recently proposed is well satisfied in our measurements. However, the value of constant b changes not only due to gas type but also according to electrode gap distance; furthermore, gas breakdown voltages are considerably modified by plasma-wall interactions due to glass tube proximity in the discharge.|
|Editor:||Institute of Physics Publishing|
|Appears in Collections:||Unicamp - Artigos e Outros Documentos|
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