TY - JOUR
T1 - Micrometer-scale discharge in high-pressure H2O and Xe environments including supercritical fluid
AU - Sawada, Masayoshi
AU - Tomai, Takaaki
AU - Ito, Tsuyohito
AU - Fujiwara, Hideyuki
AU - Terashima, Kazuo
N1 - Funding Information:
This work was supported financially in part by Grants-in-Aid for Scientific Research (B) (Grant Nos. 15360380 and 17360349) and Specific Research of Priority Areas (Microplasma, Grant No. 15075202) from the Ministry of Education, Culture, Sports, Science, and Technology of Japan.
PY - 2006
Y1 - 2006
N2 - We generated micrometer-scale discharge in high-pressure H2 O and Xe up to supercritical conditions. In our previous paper, we reported the existence of two peculiar features in the breakdown voltages under high-pressure C O2. The first one was the downward shift at the right-hand side of Paschen's curve above about 2.5 MPa, and the second one was the drastic decrease in the breakdown voltages near the critical point. We have experimentally confirmed that these features are also observed in H2 O and Xe, even though there are some differences among these materials. Our theoretical fitting involving a density fluctuation term FD agrees well with the experimental results, especially for Xe. We suppose that these unique features are brought about by decreases in the electron-to-particle cross section , ionization potential i, and secondary electron coefficient γ′ and changes in the discharge space.
AB - We generated micrometer-scale discharge in high-pressure H2 O and Xe up to supercritical conditions. In our previous paper, we reported the existence of two peculiar features in the breakdown voltages under high-pressure C O2. The first one was the downward shift at the right-hand side of Paschen's curve above about 2.5 MPa, and the second one was the drastic decrease in the breakdown voltages near the critical point. We have experimentally confirmed that these features are also observed in H2 O and Xe, even though there are some differences among these materials. Our theoretical fitting involving a density fluctuation term FD agrees well with the experimental results, especially for Xe. We suppose that these unique features are brought about by decreases in the electron-to-particle cross section , ionization potential i, and secondary electron coefficient γ′ and changes in the discharge space.
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U2 - 10.1063/1.2400802
DO - 10.1063/1.2400802
M3 - Article
AN - SCOPUS:33846078443
VL - 100
JO - Journal of Applied Physics
JF - Journal of Applied Physics
SN - 0021-8979
IS - 12
M1 - 123304
ER -