Knowledge Management System Of Institute of Geochemistry,CAS
| Work function measurements of olivine: Implication to photoemission charging properties in planetary environments | |
| Hong Gan; Xiongyao Li; Guangfei Wei; Shijie Wang | |
| 2015 | |
| Source Publication | Advances in Space Research
 |
| Volume | 56Issue:11Pages:2432-2438 |
| Abstract | For understanding the ubiquitous photoemission charging of solid surface in planetary environments, it is important to characterize the photoemission charging properties of silicate minerals such as the work function. In this study, we measured the work function of olivine mineral based on the measurements of contact potential difference by using an ultrahigh vacuum Kelvin probe force microscopy. Our results showed that work function on olivine mineral surface is mainly affected by surface morphology and crystal orientation and that the variation range of work function is 7.3-8.5 eV. It implicates that photoemission of the olivine mineral occurs under the X-ray and solar ultraviolet irradiation with wavelength of <171 nm. Consequently, it is possible to form electrostatic field of +(5-10) V on the sunlit planet, moon or asteroid surfaces due to dust photoemission charging, which even induces the migration of dust grains and the formation of dust-plasma atmosphere. Those are important problems worried to be solved for future lunar missions. Additionally, our work can help to instruct the dust mitigation technology and the electrostatic beneficiation in future space missions. |
| Keyword | Planet Moon Photoemission Olivine Work Function |
| Subject Area | 月球与行星科学 |
| Indexed By | SCI |
| Language | 英语 |
| Document Type | 期刊论文 |
| Identifier | http://ir.gyig.ac.cn/handle/352002/6060 |
| Collection | 月球与行星科学研究中心_月球与行星科学研究中心_期刊论文 |
| Recommended Citation GB/T 7714 | Hong Gan,Xiongyao Li,Guangfei Wei,et al. Work function measurements of olivine: Implication to photoemission charging properties in planetary environments[J]. Advances in Space Research,2015,56(11):2432-2438. |
| APA | Hong Gan,Xiongyao Li,Guangfei Wei,&Shijie Wang.(2015).Work function measurements of olivine: Implication to photoemission charging properties in planetary environments.Advances in Space Research,56(11),2432-2438. |
| MLA | Hong Gan,et al."Work function measurements of olivine: Implication to photoemission charging properties in planetary environments".Advances in Space Research 56.11(2015):2432-2438. |
| Files in This Item: | Download All | |||||
| File Name/Size | DocType | Version | Access | License | ||
| Work function measur（816KB） | 开放获取 | License | View Download | |||
Items in the repository are protected by copyright, with all rights reserved, unless otherwise indicated.
Edit Comment