Related Experiment Video
Updated: Apr 24, 2026
10:12
Synchrotron X-ray Microdiffraction and Fluorescence Imaging of Mineral and Rock Samples
Published on: June 19, 2018
8.3K
A short-pulse X-ray beamline for spectroscopy and scattering
R Reininger1, E M Dufresne1, M Borland1
1Advanced Photon Source, Argonne National Laboratory, Argonne, IL 60439, USA.
Journal of Synchrotron Radiation
|September 2, 2014
Summary
Picosecond X-ray spectroscopy facilities face optical design challenges. A new design minimizes off-axis radiation effects, enabling precise time-resolved studies in materials science.
Area of Science:
- Materials Science
- Chemical Physics
- Condensed Matter Physics
Background:
- Experimental facilities for picosecond X-ray spectroscopy and scattering utilize RF deflection of stored electron beams.
- These sources enable time-resolved diffraction, spectroscopy, and imaging studies in various scientific fields.
- Challenges exist in optical design for precise time resolution.
Purpose of the Study:
- To analyze optical design challenges in picosecond X-ray spectroscopy and scattering beamlines.
- To address the issue of off-axis radiation affecting X-ray pulse duration and time resolution.
- To present an optical design that minimizes these effects and allows variable pulse durations.
Main Methods:
- Detailed analysis of optical design for RF-deflected electron beams.
- Investigating the correlation between angle and time in undulator radiation.
- Simulating the impact of off-axis radiation on pulse duration for the SPXSS beamline.
Main Results:
- RF-deflected chirped electron beams produce undulator radiation with angle-time correlation.
- Off-axis radiation in concentric rings can compromise experimental time resolution.
- A novel optical design minimizes pulse duration lengthening due to off-axis radiation.
Conclusions:
- The proposed optical design effectively minimizes off-axis radiation effects.
- Variable X-ray pulse durations between 2.4 and 16 picoseconds are achievable.
- This advancement supports high-resolution time-resolved studies in materials science.
Related Concept Videos
01:23Atomic Spectroscopy: Absorption, Emission, and Fluorescence
3.1K
Atomic spectroscopy is a vital tool in elemental analysis, both qualitatively and quantitatively. It can be broadly divided into optical spectroscopy, mass spectroscopy, and X-ray spectroscopy methods. The optical spectroscopic methods are atomic absorption spectroscopy (AAS), atomic emission spectroscopy (AES), and atomic fluorescence spectroscopy (AFS). The first step in all three methods is atomization, where the solid, liquid, or solution-phase samples are converted into gas-phase atoms and...
3.1K
01:22Atomic Emission Spectroscopy: Instrumentation
1.5K
The instrumentation of atomic emission spectrometry (AES) involves various components, including atomization devices that convert samples into gas-phase atoms and ions. There are two main types of atomization devices: continuous and discrete atomizers. Continuous atomizers, like plasmas and flames, introduce samples in a constant stream, while discrete atomizers inject individual samples using syringes or autosamplers. The most common discrete atomizer is the electrothermal atomizer.
1.5K
01:26Inductively Coupled Plasma Atomic Emission Spectroscopy: Instrumentation
1.1K
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....
1.1K
01:07Scanning Electron Microscopy
5.1K
A scanning electron microscope (SEM) is used to study the surface features of a sample by using an electron beam that scans the sample surface in a two-dimensional manner. Typically, areas between ~1 centimeter to 5 micrometers in width can be imaged. SEM can be used to image bacteria, viruses, tissues as well as larger samples like insects. Conventional SEM gives a magnification ranging from 20X to 30,000X and spatial resolution of 50 to 100 nanometers.
Fundamental Principles
Accelerated...
Fundamental Principles
Accelerated...
5.1K
01:30Atomic Emission Spectroscopy: Interference
781
In atomic emission spectroscopy (AES), high-temperature atomizers excite a broad range of elements and molecules that generate complex emissions from sources such as oxides, hydroxides, and flame combustion products in the flame or plasma. Several strategies can be employed to minimize spectral interferences caused by overlapping emission lines or bands. These include increasing instrument resolution, choosing alternative emission lines, optimally placing the detector in low-background regions,...
781
01:13Atomic Absorption Spectroscopy: Radiation and Light Sources
1.6K
Atomic absorption spectroscopy (AAS) relies on the Beer-Lambert law, which requires that the radiation source emits a narrow range of wavelengths to match the absorption characteristics of the analyte atom. The primary criteria for choosing an appropriate radiation source in AAS is to provide a precise and intense emission at specific wavelengths that will allow accurate detection of the analyte.
Two common narrow-range 'line' sources used in AAS are hollow-cathode lamps (HCLs) and...
Two common narrow-range 'line' sources used in AAS are hollow-cathode lamps (HCLs) and...
1.6K