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Rigaku Journal (ISSN 2187-9974)

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Winter 2021, Volume 37, No. 1

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Winter 2021, Vol.37, No.1

Visualization of fabric fluffiness and dryness —Evaluation of laundry detergents using X-ray computed tomography—

Yukari Sekine

For manufacturers who market a wide range of products, including household products, pharmaceuticals and/or nutraceutical products, it is important to communicate the characteristics of their products to consumers. This often requires a good evaluation technique that can show the product characteristics intuitively. X-ray imaging techniques, which can visualize the internal...

The “Molecular Grabber” method: Development of new crystalline sponge method New Idea for structural analysis of compounds using protein

Takashi Matsumoto, Akihito Yamano, Ryosuke Nakashima and Kunihiko Nishino

Molecular structure determination is very useful for the development of medicines, aroma chemicals and agrochemicals. Single crystal X-ray diffraction (SC-XRD) analysis is the most powerful technique for molecular structure determination. However, SC-XRD analysis requires good quality crystals. In fact, the biggest hurdle for SC-XRD analysis is crystallization.  Crystallization trials require...

Powder X-ray Diffraction Basic Course Second installment: Selection of equipment configuration to obtain high-quality data

Masashi Omori

It is necessary to obtain high-quality data for highly accurate analysis. The characteristics of high-quality data may be high intensity, high resolution, high P/B (peak-to-background ratio), and high S/N (signal-to-noise ratio). Deciding which features are important depends on the purpose of analysis. Therefore, we need to consider measurement conditions after...

X-ray fluorescence analysis of halogen elements

Wataru Matsuda

Halogen elements correspond to Group 17 in the periodic table and include fluorine (F), chlorine (Cl), bromine (Br) and iodine (I). Materials and products containing halogens are widely used in our daily life. For example, fluorine is contained in Teflon® resin and toothpaste, chlorine is contained in salt and vinyl...

High-resolution receiving optics for SmartLab X-ray diffraction system with a Hybrid Pixel Array Multi-Dimensional Detector (HyPix): HyRES220, HyRES400

Diffraction-based characterization of epitaxial thin films, such as the measurement of the composition, strain, and lattice constants, requires complicated alignment processes of the X-ray optics. Rigaku’s multipurpose X-ray diffractometer, “SmartLab,” features an automatic alignment function, which greatly simplifies the process. However, it still requires a timeconsuming re-alignment process when, for...

OIL-MULTI-PAK for multi-elements analysis of oils using pre-calibration package

X-ray fluorescence (XRF) spectrometry allows both simple sample preparation and high precision analysis.  The method is highly popular among various fields, including quality control and research & development.  Recent advanced data processing techniques and higher instrument sensitivities have improved analytical accuracies in “standardless FP analysis” using Fundamental Parameter (FP) method...

Summer 2020, Volume 36, No. 2

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Summer 2020, Vol.36, No. 2

“TG-GC” as thermogravimetric and quantitative reactedgas analyses

Teruki Motohashi, Yoshiteru Kawahara, Kenji Arai, Kenta Suzuki and Miwa Saito

Thermogravimetry (TG) is regarded as one of the most powerful techniques to investigate the fundamental characteristics of inorganic compounds. For a certain compound, information on the temperature-vs-mass relationship leads to a deep understanding of thermal behaviors as well as interactions with the surrounding atmosphere. Nevertheless, the interpretation would not be...

Defect structure analysis in single crystal substrates using XRTmicron

Katsuhiko Inaba

For more than 50 years, X-ray topography (XRT) has been an indispensable industrial and research tool for crystal growth of functional materials, since crystalline defects, such as dislocations, stacking faults, etc., can be detected with this technique non-destructively. Industrial demand for almost dislocation-free Si has greatly contributed to this technique...

Introduction to powder X-ray diffractometry I. Overview

Keigo Nagao

Until the late 2000s, only scintillation counters (SC) were used as the detectors for general-purpose powder X-ray diffractometers. Thereafter, the core technologies that combine to create an X-ray diffractometer evolved dramatically. A one-dimensional (1D) detector—and subsequently a two-dimensional (2D) detector—came on the market, followed by new optical devices such as...

Water analysis by X-ray fluorescence spectrometry using UltraCarry

Shohei Uemura and Takao Moriyama

X-ray fluorescence (XRF) analysis has a wide range of applications because it allows quick and non-destructive qualitative and quantitative analysis of contained elements with simple sample preprocessing and has excellent measurement reproducibility. It is used in the industrial fields of steel, non-ferrous metals, mining, petroleum, ceramics, cement, and for R...

Wavelength dispersive X-ray fluorescence spectrometer ZSX Primus IVi

X-ray fluorescence (XRF) spectrometry is one instrumental analysis method used to determine the composition of solid and liquid samples. Compared to other methods, it can achieve high-precision analysis. XRF is widely used for quality control in manufacturing. It is an effective method for trouble analysis during production and research and...

9 kW–60 kV type automated multipurpose X-ray diffractometer SmartLab

Copper is the most popular target material for an X-ray generator in general X-ray diffraction measurements, but sometimes other materials are chosen depending on the composition and shape of the sample and the measurement purpose. Rigaku’s automated multipurpose X-ray diffractometer, SmartLab, can utilize X-ray source materials such as cobalt, chromium...