Volume 18
您当前的位置:首页 > 期刊文章 > 过刊浏览 > Volumes 18-23 (2015) > Volume 18
Yoon, Y. H., Bong, C., & Kim, D. S. (2015). Evaluation of the performance of a soft X-ray charger for the bipolar charging of nanoparticles. Particuology, 18, 165–169. https://doi.org/10.1016/j.partic.2014.05.005
Evaluation of the performance of a soft X-ray charger for the bipolar charging of nanoparticles
Young Hun Yoon a, Choonkeun Bong b, Dae Seong Kim c *
a Department of Integrated Environmental Systems, Pyeongtaek University, 3825 Seodongdae-ro, Pyeongtaek-Shi, Gyeonggi-do 450-701, Republic of Korea
b GreenSolus Co., #804, Byoksan Digital Valley 3-Cha, 271 Digital-ro, Guro-gu, Seoul 152-775, Republic of Korea
c Global Frontier Center for Multiscale Energy Systems, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul 151-744, Republic of Korea
10.1016/j.partic.2014.05.005
Volume 18, February 2015, Pages 165-169
Received 31 October 2013, Revised 3 April 2014, Accepted 1 May 2014, Available online 12 August 2014.
E-mail: dskim94@hanmail.net

Highlights

• The particle charge distribution by a soft X-ray charger agreed with the theory.

• In the charger, the nanoparticle generation and losses were not problematic.

• The soft X-ray charger could be used as a neutralizer for an SMPS system.


Abstract

The use of soft X-rays in a neutralizer represents an alternative technique that could replace conventional radioactive sources. In this study, we evaluated the charging characteristics of a soft X-ray aerosol neutralizer. In addition, the results from the evaluation of the soft X-ray charger were compared with results obtained using a neutralizer incorporating an 241Am radioactive source. The tandem differential mobility analyzer technique was used previously to determine the size-dependent positive, negative, and neutral charge fractions of a soft X-ray neutralizer. This technique was used to show that the neutral fractions obtained using the soft X-ray charger agreed well with the predictions of bipolar diffusion charging theory, and that the soft X-ray charger could be used as a neutralizer for a scanning mobility particle sizer system.

Graphical abstract
Keywords
Soft X-ray; Neutralizer; Bipolar charger; Nanoparticle; TDMA