L-edge spectroscopy of dilute, radiation-sensitive systems using a transition-edge-sensor array.
Charles J Titus1, Michael L Baker2, Sang Jun Lee3
1Department of Physics, Stanford University, Stanford, California 94305, USA.
The Journal of Chemical Physics
|December 10, 2017
Summary
High-throughput transition-edge-sensor (TES) spectrometers enable soft X-ray resonant inelastic X-ray scattering (RIXS) for dilute, sensitive samples. This advances studies of metal-centered complexes in biology, chemistry, and catalysis.
Area of Science:
- Materials Science
- Chemistry
- Physics
Background:
- Soft X-ray spectroscopy is crucial for understanding electronic structures.
- Studying dilute and radiation-sensitive samples presents significant challenges.
- Transition-edge-sensor (TES) spectrometers offer high throughput for X-ray measurements.
Purpose of the Study:
- To demonstrate the capability of high-throughput TES spectrometers for soft X-ray spectroscopy.
- To investigate the local electronic structure of dilute ferricyanide using X-ray absorption spectroscopy and RIXS.
- To assess the suitability of TES spectrometers for analyzing radiation- and temperature-sensitive samples.
Main Methods:
- X-ray absorption spectroscopy (XAS) and resonant inelastic X-ray scattering (RIXS) were performed.
- Measurements focused on the iron L-edge of 0.5 mM aqueous ferricyanide.
- High-throughput TES spectrometers were utilized for soft X-ray (100-2000 eV) measurements.
Main Results:
- The study successfully accessed the soft X-ray spectroscopy regime for a dilute sample.
- RIXS data from TES spectrometers agreed with high-concentration measurements from grating spectrometers.
- The technique proved effective for characterizing the electronic structure of dilute ferricyanide.
Conclusions:
- High-throughput TES spectrometers are effective for soft X-ray RIXS on dilute, sensitive samples.
- This technology enables the study of local electronic structures in metallo-organic complexes.
- TES spectrometers are particularly valuable for analyzing frozen solutions of sensitive materials relevant to various scientific fields.
More Related Videos
Related Concept Videos
01:20Atomic Emission Spectroscopy: Overview
3.8K
Atomic emission spectroscopy (AES) is an analytical technique used to determine the elemental composition of a sample by analyzing the light emitted from excited atoms. In AES, atoms in a sample are excited to higher energy levels by thermal energy from high-temperature sources, such as plasma, arcs, or sparks. When these excited atoms return to lower energy states, they emit light at specific wavelengths characteristic of each element. The resulting atomic emission spectrum, which consists of...
3.8K
01:29Atomic Emission Spectroscopy: Lab
668
AES is a powerful analytical technique, especially effective when used with plasma sources, producing abundant spectra in characteristic emission lines. The Inductively Coupled Plasma (ICP), in particular, yields superior quantitative analytical data due to its high stability, low noise, low background, and minimal interferences under optimal experimental conditions. However, newer air-operated microwave sources are emerging as promising alternatives that could be more cost-effective than...
668
01:26Inductively Coupled Plasma Atomic Emission Spectroscopy: Instrumentation
796
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....
796
01:22Atomic Emission Spectroscopy: Instrumentation
1.3K
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.
1.3K
01:23Atomic Spectroscopy: Absorption, Emission, and Fluorescence
2.9K
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...
2.9K
01:30Atomic Emission Spectroscopy: Interference
662
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,...
662