| DOI: | 10.1002/2016GL069491
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| 论文题名: | Dust charging and transport on airless planetary bodies |
| 作者: | Wang X.; Schwan J.; Hsu H.-W.; Grün E.; Horányi M.
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| 刊名: | Geophysical Research Letters
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| ISSN: | 0094-9699
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| EISSN: | 1944-9430
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| 出版年: | 2016
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| 卷: | 43, 期:12 | | 起始页码: | 6103
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| 结束页码: | 6110
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| 语种: | 英语
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| 英文关键词: | airless bodies
; dust
; electrostatic transport
; photoelectrons
; plasma
; secondary electrons
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| Scopus关键词: | Dust
; Photoelectrons
; Photons
; Planets
; Plasmas
; Secondary emission
; Airless bodies
; Electrostatic transport
; Laboratory experiments
; Large aggregates
; Repulsive forces
; Secondary electrons
; Space observations
; Ultraviolet illumination
; Agglomeration
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| 英文摘要: | We report on laboratory experiments to shed light on dust charging and transport that have been suggested to explain a variety of unusual phenomena on the surfaces of airless planetary bodies. We have recorded micron-sized insulating dust particles jumping to several centimeters high with an initial speed of ~0.6 m/s under ultraviolet illumination or exposure to plasmas, resulting in an equivalent height of ~0.11 m on the lunar surface that is comparable to the height of the so-called lunar horizon glow. Lofted large aggregates and surface mobilization are related to many space observations. We experimentally show that the emission and re-absorption of photoelectron and/or secondary electron at the walls of microcavities formed between neighboring dust particles below the surface are responsible for generating unexpectedly large negative charges and intense particle-particle repulsive forces to mobilize and lift off dust particles. ©2016. American Geophysical Union. All Rights Reserved. |
| URL: | https://www.scopus.com/inward/record.uri?eid=2-s2.0-84977580830&doi=10.1002%2f2016GL069491&partnerID=40&md5=a308b12110493aaab96eb5623ee83686
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| Citation statistics: |
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| 资源类型: | 期刊论文
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| 标识符: | http://119.78.100.158/handle/2HF3EXSE/10662
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| Appears in Collections: | 科学计划与规划
气候变化与战略
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作者单位: | Laboratory for Atmospheric and Space Physics, University of Colorado Boulder, Boulder, CO, United States
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| Recommended Citation: | |
Wang X.,Schwan J.,Hsu H.-W.,et al. Dust charging and transport on airless planetary bodies[J]. Geophysical Research Letters,2016-01-01,43(12).
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