Effect of free electrons on nanoparticle charging in a negative direct current corona charger

A. Aliat; Chuen-Jinn Tsai; C. T. Hung; Jong-Shinn Wu

doi:10.1063/1.2967470

Effect of free electrons on nanoparticle charging in a negative direct current corona charger

A. Aliat^*, Chuen-Jinn Tsai, C. T. Hung, Jong-Shinn Wu

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

15 Scopus citations

Abstract

A two-dimensional numerical model is proposed in this letter to take into account the effects of free electrons on nanoparticle charging in a negative direct current wire-tube corona charger. Numerical results are in excellent agreement with the experimental data by using a capturing probability of electrons onto nanoparticles with a value of 0.013. These free electrons contribute greatly to the charging efficiency at high products of mean ion concentration and mean residence time, which explains very well the large discrepancy found in earlier models that considered only negative ions.

Original language	American English
Article number	154103
Journal	Applied Physics Letters
Volume	93
Issue number	15
DOIs	https://doi.org/10.1063/1.2967470
State	Published - 13 Oct 2008

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abstract = "A two-dimensional numerical model is proposed in this letter to take into account the effects of free electrons on nanoparticle charging in a negative direct current wire-tube corona charger. Numerical results are in excellent agreement with the experimental data by using a capturing probability of electrons onto nanoparticles with a value of 0.013. These free electrons contribute greatly to the charging efficiency at high products of mean ion concentration and mean residence time, which explains very well the large discrepancy found in earlier models that considered only negative ions.",

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AU - Aliat, A.

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AU - Wu, Jong-Shinn

PY - 2008/10/13

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N2 - A two-dimensional numerical model is proposed in this letter to take into account the effects of free electrons on nanoparticle charging in a negative direct current wire-tube corona charger. Numerical results are in excellent agreement with the experimental data by using a capturing probability of electrons onto nanoparticles with a value of 0.013. These free electrons contribute greatly to the charging efficiency at high products of mean ion concentration and mean residence time, which explains very well the large discrepancy found in earlier models that considered only negative ions.

AB - A two-dimensional numerical model is proposed in this letter to take into account the effects of free electrons on nanoparticle charging in a negative direct current wire-tube corona charger. Numerical results are in excellent agreement with the experimental data by using a capturing probability of electrons onto nanoparticles with a value of 0.013. These free electrons contribute greatly to the charging efficiency at high products of mean ion concentration and mean residence time, which explains very well the large discrepancy found in earlier models that considered only negative ions.

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Effect of free electrons on nanoparticle charging in a negative direct current corona charger

Abstract

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