Technical Information Magazine 201902-02 Development of Atmospheric Pressure RBS Analysis

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last updated：Mar 24, 2025

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The technical information magazine The TRC News provides the latest information on analytical techniques that are useful for research and development, solving production troubles, and quality control.

**Abstract** In many cases, the analysis targets in surface analysis are limited to those that can be maintained in a vacuum. On the other hand, by applying the potential of high-speed ions, it is possible to bring the analysis probe out to atmospheric pressure. At TRC, we examined Rutherford backscattering spectroscopy (RBS) at atmospheric pressure and succeeded in its realization. This paper reports on depth analysis of solid/liquid interfaces using atmospheric pressure RBS, evaluation of depth distribution of quantum dots in HeLa cells, and depth analysis of hydrogen in wet samples using atmospheric pressure RBS/HFS (hydrogen forward scattering analysis). **Table of Contents** 1. Introduction 2. Solid/Liquid Interface Analysis 3. Application to Biological Samples 4. Development of Measurement System at TRC: Atmospheric Pressure RBS/HFS Analysis 5. Conclusion

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Technical Information Magazine The TRC News "Development of Atmospheric Pressure RBS Analysis – Surface Analysis of Liquid and Wet Samples –" [Abstract] In many cases, the analysis targets in surface analysis are limited to those that can be maintained in a vacuum. On the other hand, by applying the potential of high-speed ions, it is possible to bring the analysis probe to atmospheric pressure. TRC has examined Rutherford Backscattering Spectrometry (RBS) at atmospheric pressure and has succeeded in its realization. This paper reports on depth analysis of solid/liquid interfaces using atmospheric pressure RBS, evaluation of the depth distribution of quantum dots in HeLa cells, and depth analysis of hydrogen in wet samples using atmospheric pressure RBS/HFS (Hydrogen Forward Scattering Analysis). [Table of Contents] Solid/Liquid Interface Analysis Expansion to Biological Samples Development of Measurement System at TRC: Atmospheric Pressure RBS/HFS Analysis Conclusion [Figures and Tables] Figures 1 to 14 Atmospheric Pressure RBS Spectrum of KI Aqueous Solution Atmospheric Pressure RBS Spectrum Before and After Electrolysis Depth Profile Composition Distribution Near the Electrode/Electrolyte Interface Depth Distribution Evaluation of Q-dots in HeLa Cells Using Atmospheric Pressure RBS/PIXE Comparison of Q-dot Quantity Using Atmospheric Pressure PIXE and Fluorescence Measurement Atmospheric Pressure RBS Spectrum Obtained at TRC and Vacuum RBS Spectrum