DOI: 10.1002/grl.50230
论文题名: Experimental demonstration of the role of cohesion in electrostatic dust lofting
作者: Hartzell C.M. ; Wang X. ; Scheeres D.J. ; Horányi M.
刊名: Geophysical Research Letters
ISSN: 0094-9234
EISSN: 1944-8965
出版年: 2013
卷: 40, 期: 6 起始页码: 1038
结束页码: 1042
语种: 英语
英文关键词: asteroids
; cohesion
; dust
; Moon
Scopus关键词: Celestial bodies
; cohesion
; Cohesive bonds
; Electric field strength
; Experimental demonstrations
; Gravitational forces
; Plasma experiments
; Theoretical models
; Asteroids
; Buildings
; Dust
; Electric fields
; Gravitation
; Moon
; Adhesion
; asteroid
; cohesion
; dust
; electric field
; electrical conductivity
; experimental study
; Moon
; numerical model
; particulate matter
; plasma
英文摘要: The cohesion between small dust particles plays an important role in determining the electrostatic force required to loft charged dust off a surface. On airless, celestial bodies, the cohesive bond between dust particles can be stronger than the gravitational force. Assuming that the charge on dust particles is given by Gauss' law, a theoretical model considering both cohesive and gravitational forces has predicted that intermediate-sized particles require the smallest electric field strength to loft. We experimentally confirm that, for a given electric field, intermediate-sized particles are lofted, while smaller and larger particles do not move. Key Points Intermediately-sized dust grains are easiest to electrostatically loft Cohesion drives the electric field required to loft small dust grains in plasma Experiment and theory confirm the importance of cohesion for small grains. ©2013 American Geophysical Union. All Rights Reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84876902034&doi=10.1002%2fgrl.50230&partnerID=40&md5=5dec382467e084a3025e77952a46dc75
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/6498
Appears in Collections: 气候减缓与适应
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作者单位: Department of Aerospace Engineering Sciences, University of Colorado, UCB 431, Boulder, CO 80309, United States
Recommended Citation:
Hartzell C.M.,Wang X.,Scheeres D.J.,et al. Experimental demonstration of the role of cohesion in electrostatic dust lofting[J]. Geophysical Research Letters,2013-01-01,40(6).