Extreme Ultraviolet Generation and Spectroscopy in Laser Wakefield Accelerators

激光尾流加速器中的极紫外发生和光谱学

• 批准号: 2308982
• 负责人: Franklin Dollar
• 金额: $ 63.7万
• 依托单位: University of California-Irvine
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2023
• 资助国家: 美国
• 起止时间: 2023-06-01 至 2026-05-31
• 项目状态: 未结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=2308982&HistoricalAwards=false
• 关键词: Extreme; Ultraviolet; Generation; Spectroscopy; Laser

This award supports a study of how powerful lasers may be used to make extreme ultraviolet light sources. Light enables us to see the world around us, both literally with our eyes but also through the use of tools such as microscopes. The smallest objects we can see depend on the color of the light used; blue light can see smaller objects than red light, and ultraviolet light can see smaller objects still. Extreme ultraviolet light can see objects as small as molecules and is the light that is currently used to manufacture state-of-the-art computer chips. High brightness sources of extreme ultraviolet (EUV) light are very difficult and expensive to make. This project aims to understand how extremely powerful lasers may be used to make an EUV light source, and to gauge the practicality of the light for applications. The project will experimentally characterize the emission of EUV light as generated in laser wakefield acceleration (LWFA). There are two main facets of this research: (1) to use EUV emission to characterize and better understand the plasma conditions related to LWFA, and (2) to investigate the potential of LWFA as an EUV light source. Experiments will be performed on PetaWatt laser facilities such as the ZEUS laser, where various acceleration and injection regimes and EUV spectroscopy will be investigated. Numerical modeling of laser-plasma interactions will be performed to determine the most suitable models to describe the physics in this intermediate energy range. With measurements of plasma emission, the plasma temperature will be inferred and correlated with injected charge via simulations.This award reflects NSF's statutory mission and has been deemed worthy of support through evaluation using the Foundation's intellectual merit and broader impacts review criteria.

该奖项支持一项关于如何使用强大的激光来制造极紫外光源的研究。 光使我们能够通过肉眼以及显微镜等工具来观察周围的世界。我们能看到的最小物体取决于所使用的光的颜色；蓝光可以看到比红光更小的物体，而紫外线仍然可以看到更小的物体。极紫外光可以看到小至分子的物体，是目前用于制造最先进的计算机芯片的光。高亮度极紫外 (EUV) 光源的制造非常困难且昂贵。该项目旨在了解如何使用极其强大的激光器来制造 EUV 光源，并评估该光的应用实用性。该项目将通过实验表征激光尾场加速 (LWFA) 中产生的 EUV 光的发射。这项研究有两个主要方面：(1) 使用 EUV 发射来表征和更好地了解与 LWFA 相关的等离子体条件，以及 (2) 研究 LWFA 作为 EUV 光源的潜力。实验将在 ZEUS 激光器等 PetaWatt 激光设施上进行，其中将研究各种加速和注入方式以及 EUV 光谱。 将进行激光-等离子体相互作用的数值建模，以确定描述该中间能量范围内的物理现象的最合适的模型。 通过测量等离子体发射，将通过模拟推断等离子体温度并与注入电荷相关联。该奖项反映了 NSF 的法定使命，并通过使用基金会的智力优点和更广泛的影响审查标准进行评估，被认为值得支持。