Mobility of positively charged ions in supercritical helium

被引：0

作者：

Tarchouna, H. G. ^{[1
]}

Aitken, F. ^{[1
]}

Bonifaci, N. ^{[1
]}

von Haeften, K. ^{[2
]}

Eloranta, J. ^{[3
]}

机构：

[1] Univ Grenoble Alpes, CNRS, G2ELab, Grenoble, France

[2] Univ Leicester, Dept Phys & Astron, Leicester LE1 7RH, Leics, England

[3] Calif State Univ Northridge, Dept Chem & Biochem, Northridge, CA 91330 USA

来源：

PROCEEDINGS OF THE 2014 IEEE 18TH INTERNATIONAL CONFERENCE ON DIELECTRIC LIQUIDS (ICDL 2014) | 2014年

关键词：

Positive ions mobility in supercritical helium; Corona discharge; LIQUID-HELIUM; IONIZATION; DEPENDENCE; TRANSPORT; CLUSTERS;

D O I：

暂无

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

The mobility of positively charged ions in supercritical helium at temperatures from 6 to 11 K and up to 20 bar was measured using corona discharges. Regions of increased and decreased hydrodynamic radius are interpreted in terms of growth, compression and solidification of ion clusters. Modelling of the mobility using a thermodynamic state equation for the ion-helium mixed system and a temperature dependent Cunningham correction provides best match with experimental data for a van der Waals helium-ion interaction term. Regions of large hydrodynamic radius and large compressibility are attributed to liquid-like behaviour.

引用

页数：4

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