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Instrument Calibration

Instrument Calibration

Instrument calibration is essential for ensuring that instruments produce accurate and consistent results. It is vital in manufacturing, healthcare, testing laboratories, and scientific research. Calibration processes are specific to each instrument and help enhance data accuracy. Each instrument has a unique calibration process tailored to its design and function to improve data accuracy.
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IR Spectrometers

IR Spectrometers

There are two main infrared (IR) spectrophotometers: dispersive IR spectrometers and Fourier transform infrared (FTIR) spectrometers. In a dispersive IR spectrometer, a beam of infrared radiation produced by a hot wire is divided into two parallel equal-intensity beams using mirrors. One beam passes through the sample, while another is a reference beam. The beams then move through the monochromator, which separates the radiations into a continuous spectrum of different frequencies. The...

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Attenuated Total Reflectance (ATR) Infrared Spectroscopy: Overview

Attenuated total reflectance (ATR) infrared spectroscopy is a powerful analytical technique used to study the composition of materials. It is widely employed in chemistry, materials science, forensic science, and other fields where sample characterization is required. ATR has several advantages over traditional transmission IR spectroscopy, including the requirement of little to no sample preparation and the ability to analyze a wide range of samples.
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Atomic Absorption Spectroscopy: Instrumentation

Atomic Absorption Spectroscopy: Instrumentation

An atomic absorption spectrophotometer (AAS) comprises several components: a radiation source, an atomizer, a monochromator, and a detector. The radiation source can be a hollow-cathode lamp (HCL) or an electrodeless-discharge lamp (EDL), both of which provide a narrow emission line of the required wavelength. However, some instruments use continuum sources and high-resolution monochromators to achieve a narrow range of radiation.
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Atomic Emission Spectroscopy: Lab

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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...

Inductively Coupled Plasma Atomic Emission Spectroscopy: Instrumentation

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Related Experiment Video

Updated: Jun 6, 2026

Elemental-sensitive Detection of the Chemistry in Batteries through Soft X-ray Absorption Spectroscopy and Resonant Inelastic X-ray Scattering

Elemental-sensitive Detection of the Chemistry in Batteries through Soft X-ray Absorption Spectroscopy and Resonant Inelastic X-ray Scattering

Published on: April 17, 2018

ITER-relevant calibration technique for soft x-ray spectrometer.

J Rzadkiewicz¹, I Książek, K-D Zastrow

¹Institute of Plasma Physics and Laser Microfusion, EURATOM Association, Hery 23, 01-497 Warsaw, Poland. j.rzadkiewicz@ipj.gov.pl

The Review of Scientific Instruments

|November 10, 2010

Summary

Calibrating impurity monitoring for fusion reactors like JET and ITER is crucial. Two methods for monitoring beryllium impurities yielded results four times different, requiring further study.

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Elemental-sensitive Detection of the Chemistry in Batteries through Soft X-ray Absorption Spectroscopy and Resonant Inelastic X-ray Scattering

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Area of Science:

Plasma physics
Fusion energy research
Spectroscopy

Background:

The International Thermonuclear Experimental Reactor (ITER) and Joint European Torus (JET) require precise monitoring of low-Z impurities, especially beryllium (Be), a key plasma-facing component.
Absolute sensitivity calibration of diagnostic tools like Bragg spectroscopy is essential but challenging in large tokamak environments.

Purpose of the Study:

To describe and compare two methods for absolute sensitivity calibration of the Be IV spectral line (75.9 Å) using the Bragg rotor spectrometer on JET.
To investigate discrepancies in calibration results obtained from different methodologies.

Main Methods:

Component-by-component calibration utilizing multiorder reflectivity calculations.
Continuum calibration method using emission from low-impurity helium plasmas.
Deployment of the Bragg rotor spectrometer on JET for Be IV channel measurements.

Main Results:

The component-by-component calibration method yielded results approximately four times higher than the continuum method.
Helium plasmas provided suitable conditions for absolute photon flux calibration due to their low impurity levels.

Conclusions:

Significant discrepancies exist between the two calibration methods for Be IV monitoring.
Further research is necessary to understand and resolve the differences observed between the component-by-component and continuum calibration techniques.