基于折射率和THz条纹到达时间工具的相关性,用于硬X射线自由电子激光器
Wojciech Błachucki1, Philip J M Johnson2, Ivan Usov2
1Institute of Nuclear Physics, Polish Academy of Sciences, 31-342 Kraków, Poland.
Journal of synchrotron radiation
|January 22, 2024
概括
精确测量X射线脉冲到达时间对于研究超高速动力学至关重要. 这项研究比较了两种方法,在硬X射线脉冲中实现了19.2 fs的精确动测量.
科学领域:
- 物理 物理学 物理
- 超快速科学 超快速科学
- 射线科学X射线科学X射线科学
背景情况:
- 射线自由电子激光器 (XFELs) 提供超短脉冲持续时间,对于探测失衡动态至关重要.
- 测量X射线脉冲和外部激光脉冲之间的内在到达时间波动对于精确的时间解析实验至关重要.
研究的目的:
- 为了比较两种不同的方法来测量硬X射线脉冲的到达时间动.
- 通过对探头实验进行射击对射击的校正来验证这些测量技术的有效性.
主要方法:
- 使用特拉赫兹 (THz) 场测量X射线脉冲到达时间的光电子条纹.
- 监测半导体中短暂的折射率变化,作为一种替代的到达时间测量技术.
- 使用探头瞬时反射度测量设置进行验证.
主要成果:
- 光电线条和短暂折射率变化方法都成功地用于测量X射线脉冲到达时间动.
- 开发的方法使得实验数据的有效对照校正成为可能.
- 实现了最终的镜头对镜头的定时分辨率,在半最大误差时的全宽度为19.2 ± 0.1 fs.
结论:
- 相比的方法提供了硬X射线脉冲到达时间动的可靠和准确的测量.
- 这些技术对于在超快科学中同步X射线脉冲与外部扰动至关重要.
- 实现的定时精度为探索XFELs复杂的失衡动态开辟了新的途径.
相关概念视频
X-ray Crystallography
23.9K
The size of the unit cell and the arrangement of atoms in a crystal may be determined from measurements of the diffraction of X-rays by the crystal, termed X-ray crystallography.
Diffraction
Diffraction is the change in the direction of travel experienced by an electromagnetic wave when it encounters a physical barrier whose dimensions are comparable to those of the wavelength of the light. X-rays are electromagnetic radiation with wavelengths about as long as the distance between neighboring...
Diffraction
Diffraction is the change in the direction of travel experienced by an electromagnetic wave when it encounters a physical barrier whose dimensions are comparable to those of the wavelength of the light. X-rays are electromagnetic radiation with wavelengths about as long as the distance between neighboring...
23.9K
Inductively Coupled Plasma Atomic Emission Spectroscopy: Instrumentation
225
Inductively coupled plasma (ICP) is the common plasma source used in atomic emission spectroscopy (AES), a technique that detects and analyzes various elements in a sample. This method is often called inductively coupled plasma atomic emission spectroscopy (ICP-AES).
There are three main types of inductively coupled plasma atomic emission spectroscopy (ICP-AES) instruments: sequential, simultaneous multichannel, and Fourier transform instruments, with the latter being less commonly used....
There are three main types of inductively coupled plasma atomic emission spectroscopy (ICP-AES) instruments: sequential, simultaneous multichannel, and Fourier transform instruments, with the latter being less commonly used....
225


