skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: New instrument for tribocharge measurement due to single particle impacts

Abstract

During particulate solid processing, particle-particle and particle-wall collisions can generate electrostatic charges. This may lead to a variety of problems ranging from fire and explosion hazards to segregation, caking, and blocking. A fundamental understanding of the particle charging in such situations is therefore essential. For this purpose we have developed a new device that can measure charge transfer due to impact between a single particle and a metal plate. The device consists of an impact test system and two sets of Faraday cage and preamplifier for charge measurement. With current amplifiers, high-resolution measurements of particle charges of approximately 1 and 10 fC have been achieved before and after the impact, respectively. The device allows charge measurements of single particles with a size as small as {approx}100 {mu}m impacting on the target at different incident angles with a velocity up to about 80 m/s. Further analyses of the charge transfer as a function of particle initial charge define an equilibrium charge, i.e., an initial charge level prior to impact for which no net charge transfer would occur as a result of impact.

Authors:
; ; ; ;  [1];  [2];  [3];  [3]
  1. Institute of Particle Science and Engineering, University of Leeds, Woodhouse Lane, Leeds, West Yorkshire LS2 9JT (United Kingdom)
  2. (Japan)
  3. (United Kingdom)
Publication Date:
OSTI Identifier:
20953265
Resource Type:
Journal Article
Resource Relation:
Journal Name: Review of Scientific Instruments; Journal Volume: 78; Journal Issue: 2; Other Information: DOI: 10.1063/1.2671585; (c) 2007 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
42 ENGINEERING; AMPLIFIERS; CHARGED PARTICLES; EXPLOSIONS; FARADAY CUPS; FIRES; HAZARDS; IMPACT TESTS; PLATES; PRESSING; VELOCITY

Citation Formats

Watanabe, Hideo, Ghadiri, Mojtaba, Matsuyama, Tatsushi, Ding Yulong, Pitt, Kendal G., Faculty of Engineering, Soka University, Hachioji, Tokyo 192-8577, Institute of Particle Science and Engineering, University of Leeds, Woodhouse Lane, Leeds, West Yorkshire LS2 9JT, and Merck Sharp and Dohme, Hertford Road, Hoddesdon, Hertfordshire EN11 9BU. New instrument for tribocharge measurement due to single particle impacts. United States: N. p., 2007. Web. doi:10.1063/1.2671585.
Watanabe, Hideo, Ghadiri, Mojtaba, Matsuyama, Tatsushi, Ding Yulong, Pitt, Kendal G., Faculty of Engineering, Soka University, Hachioji, Tokyo 192-8577, Institute of Particle Science and Engineering, University of Leeds, Woodhouse Lane, Leeds, West Yorkshire LS2 9JT, & Merck Sharp and Dohme, Hertford Road, Hoddesdon, Hertfordshire EN11 9BU. New instrument for tribocharge measurement due to single particle impacts. United States. doi:10.1063/1.2671585.
Watanabe, Hideo, Ghadiri, Mojtaba, Matsuyama, Tatsushi, Ding Yulong, Pitt, Kendal G., Faculty of Engineering, Soka University, Hachioji, Tokyo 192-8577, Institute of Particle Science and Engineering, University of Leeds, Woodhouse Lane, Leeds, West Yorkshire LS2 9JT, and Merck Sharp and Dohme, Hertford Road, Hoddesdon, Hertfordshire EN11 9BU. Thu . "New instrument for tribocharge measurement due to single particle impacts". United States. doi:10.1063/1.2671585.
@article{osti_20953265,
title = {New instrument for tribocharge measurement due to single particle impacts},
author = {Watanabe, Hideo and Ghadiri, Mojtaba and Matsuyama, Tatsushi and Ding Yulong and Pitt, Kendal G. and Faculty of Engineering, Soka University, Hachioji, Tokyo 192-8577 and Institute of Particle Science and Engineering, University of Leeds, Woodhouse Lane, Leeds, West Yorkshire LS2 9JT and Merck Sharp and Dohme, Hertford Road, Hoddesdon, Hertfordshire EN11 9BU},
abstractNote = {During particulate solid processing, particle-particle and particle-wall collisions can generate electrostatic charges. This may lead to a variety of problems ranging from fire and explosion hazards to segregation, caking, and blocking. A fundamental understanding of the particle charging in such situations is therefore essential. For this purpose we have developed a new device that can measure charge transfer due to impact between a single particle and a metal plate. The device consists of an impact test system and two sets of Faraday cage and preamplifier for charge measurement. With current amplifiers, high-resolution measurements of particle charges of approximately 1 and 10 fC have been achieved before and after the impact, respectively. The device allows charge measurements of single particles with a size as small as {approx}100 {mu}m impacting on the target at different incident angles with a velocity up to about 80 m/s. Further analyses of the charge transfer as a function of particle initial charge define an equilibrium charge, i.e., an initial charge level prior to impact for which no net charge transfer would occur as a result of impact.},
doi = {10.1063/1.2671585},
journal = {Review of Scientific Instruments},
number = 2,
volume = 78,
place = {United States},
year = {Thu Feb 15 00:00:00 EST 2007},
month = {Thu Feb 15 00:00:00 EST 2007}
}