The phase and inverse scattering problem for electrons multiply scattered by non-periodic solids

非周期固体电子多重散射的相位和逆散射问题

• 批准号: ARC : DP0208208
• 负责人: A/Prof Leslie Allen
• 金额: $ 18万
• 依托单位: The University of Melbourne
• 依托单位国家: 澳大利亚
• 项目类别: Discovery Projects
• 财政年份: 2002
• 资助国家: 澳大利亚
• 起止时间: 2002-01-01 至 2005-12-31
• 项目状态: 已结题
• 来源: https://researchdata.edu.au/the-phase-inverse-periodic-solids/73056
• 关键词: phase; inverse; scattering; problem; electrons

The phase and inverse scattering problem for electrons multiply scattered by non-periodic solids. Theoretical methods for the inversion of multiple scattering of electrons in non-periodic solids will be obtained. This will vastly extend the range of utility of atomic resolution electron microscopy and electron tomography, where single scattering conditions are usually assumed. We will further develop our recent novel solutions to the phase problem from images and diffraction patterns (needed as a prelude to the inversion) that are robust in the presence of discontinuities in the phase (such as vortices). These phase retrieval methods will be useful not only for problems in electron optics but also in visible, x-ray, neutron and atom optics.

电子被非周期固体多次散射的相位和逆散射问题。将获得非周期固体中电子多重散射反演的理论方法。这将极大地扩展原子分辨率电子显微镜和电子层析成像的实用范围，其中通常假设单散射条件。我们将进一步发展我们最近的新的解决方案，相位问题的图像和衍射图案（需要作为前奏的反演），是强大的，在相位（如涡流）的不连续性的存在。这些相位恢复方法不仅适用于电子光学，而且适用于可见光、X射线、中子和原子光学。