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Studies of Light Scattering by Particles of Arbitrary Shape

任意形状粒子光散射的研究

基本信息

批准号：
1649783
负责人：
Christopher Sorensen
金额：
$ 45.59万
依托单位：
Kansas State University
依托单位国家：
美国
项目类别：
Continuing Grant
财政年份：
2017
资助国家：
美国
起止时间：
2017-07-01 至 2021-06-30
项目状态：
已结题

来源：
https://www.nsf.gov/awardsearch/showAward?AWD_ID=1649783&HistoricalAwards=false
关键词：
Studies Light Scattering Particles Arbitrary

项目摘要

The scattering of incoming sunlight by atmospheric particles has a significant impact on the radiation balance of the Earth. The pattern and impact of light scattering by spherical particles is well-known, but atmospheric particles such as dust, soot, and biological particles are irregularly shaped and interact with light differently. In this award, the researchers will conduct experimental and theoretical studies to build a collection of general rules that describe how light scatters by particles of any shape. The results of the project are likely to have an impact on the understanding of how aerosols affect the global environment. Teaching and training will be emphasized, with graduate and undergraduate student involvement in the project and well as various outreach activities. The research also has the potential to impact other scientific fields. The overarching perspective used in this proposal is the Q-space analysis which provides a means for a universal, quantitative description of the scattering that leads to new physical insights into the scattering process. The emphasis of the proposal will be on coarse mode aerosols, such as mineral dusts and soot that have a large impact on the direct radiative forcing of Earth's climate. The project includes both experimental components, making use of a light scattering device, and theoretical components with an end goal of deriving a general description of scattering for any particle shape or size.

大气颗粒对入射阳光的散射对地球的辐射平衡有重大影响。球形颗粒的光散射模式和影响是众所周知的，但大气颗粒（如灰尘，烟灰和生物颗粒）形状不规则，与光的相互作用不同。在这个奖项中，研究人员将进行实验和理论研究，以建立一个描述光如何被任何形状的粒子散射的一般规则集合。该项目的结果可能会对了解气溶胶如何影响全球环境产生影响。将强调教学和培训，研究生和本科生参与该项目以及各种推广活动。这项研究也有可能影响其他科学领域。在这个建议中使用的总体观点是Q-空间分析，它提供了一个通用的，定量描述的散射，导致新的物理见解的散射过程的手段。该提案的重点将是粗糙模式气溶胶，如矿物粉尘和烟尘，对地球气候的直接辐射强迫有很大的影响。该项目包括两个实验组件，利用光散射装置，和理论组件，最终目标是导出任何颗粒形状或尺寸的散射的一般描述。