Understanding the interaction of intense ultrafast radiation with matter

了解强烈的超快辐射与物质的相互作用

• 批准号: 341647-2011
• 负责人: Ramunno, Lora
• 金额: $ 1.6万
• 依托单位: University of Ottawa
• 依托单位国家: 加拿大
• 项目类别: Discovery Grants Program - Individual
• 财政年份: 2015
• 资助国家: 加拿大
• 起止时间: 2015-01-01 至 2016-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=572332
• 关键词: Understanding; interaction; intense; ultrafast; radiation

Dr. Ramunno's laboratory is a high-performance computer with which she uses to accurately simulate the effect of very powerful laser pulses on materials. These pulses are ten millionth of a billionth of a second long, and their interaction with materials is opening new frontiers in science and technology, from the fabrication of extremely small optical devices, to microscopic surgery for groundbreaking experiments on cellular and sub-cellular function to the discovery of new and unexplored processes at the forefront of science. One goal of Dr. Ramunno's research is to understand how powerful lasers can be used to make delicate and precise "cuts" and other restructuring in materials in order to make microscopic devices that will lead to advances in areas such as information and communications technology and medicine. The interaction itself is highly complex, and can result in unexpected restructuring that is currently not well understood. New coherent radiation sources are being developed at ever smaller wavelengths from the ultraviolet to Xrays and at intensities a billion times more brilliant than state-of-the-art synchrotrons. These are being used to probe laser-matter interactions in totally unexplored regimes. One way to test this interaction is via the irradiatiom clusters, which are small chunks of solid materials on the order of 1 to 100 nanometres in size. Dr. Ramunno's other research goal is to investigate the complex interaction of these radiation sources with clusters on a microscopic level via large-scale numerical simulations. An integral part of her research program is the training of three graduate students. Two will work on aspects of intense radiation interaction with clusters, and a third on material restructuring of transparent materials by intense laser pulses.

Ramunno博士的实验室是一款高性能的计算机，她用它准确地模拟了非常强大的激光脉冲对材料的影响。 这些脉冲是十亿分之一的一千万次，它们与材料的互动正在开放科学技术的新领域，从制造极小的光学设备到微观手术，用于对细胞和亚细胞功能的开创性实验，再到科学前层的新的和未探索的过程。 Ramunno博士的研究的目标之一是了解如何使用强大的激光来对材料进行精致，精确的“切割”和其他重组，以制造微观设备，从而导致信息和通信技术和医学等领域的进步。相互作用本身是高度复杂的，可能导致意外的重组目前尚不清楚。 从紫外线到Xrays的波长越来越小的波长正在开发新的相干辐射源，并且强度比最先进的同步子高十亿倍。这些被用于在完全未开发的制度中探测激光 - 物质的相互作用。测试这种相互作用的一种方法是通过iRadiatiom簇，它们是1至100纳米尺寸阶的小块固体材料。 Ramunno博士的其他研究目标是通过大规模的数值模拟研究这些辐射源与簇的复杂相互作用。 她的研究计划不可或缺的一部分是对三名研究生的培训。两个将在与簇的强烈辐射相互作用方面起作用，而三分之一将通过强烈的激光脉冲对透明材料进行重组。