A Transition Edge Sensor Microcalorimeter System for the Energy Dispersive Spectroscopy Performed on a Scanning-Transmission Electron Microscope

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• 作者：K. Maehata ; T. Hara ; K. Mitsuda ; M. Hidaka ; K. Tanaka…
• 刊名：Journal of Low Temperature Physics
• 出版年：2016
• 出版时间：July 2016
• 年：2016
• 卷：184
• 期：1-2
• 页码：5-10
• 全文大小：998 KB
• 刊物类别：Physics and Astronomy
• 刊物主题：Physics
  Condensed Matter
  Characterization and Evaluation Materials
  Magnetism and Magnetic Materials
  
• 出版者：Springer Netherlands
• ISSN：1573-7357
• 卷排序：184

文摘

We are conducting the development of a transition edge sensor (TES) microcalorimeter system for energy-dispersive X-ray spectroscopy (EDS), performed using a scanning-transmission electron microscope (STEM). The operating temperature of the TES microcalorimeter was maintained using a compact dry \(^{3}\)He-\(^{4}\)He dilution refrigerator. This was pre-cooled by a remote helium cooling loop system and a Gifford-McMahon cooler. These conditions allowed for high-resolution STEM imaging to be achieved. A single-pixel TES microcalorimeter with a polycapillary optic was selected to demonstrate the analytical operation of the EDS system in the STEM. For a Ti-It-Pt sample, an X-ray energy resolution of 8.6 eV full-width at half maximum (FWHM) was obtained at Ir M\(_{\alpha 1}\), Pt M\(_{\alpha 1}\), and Ir M\(_{\beta }\). Using an electron device sample, element distribution maps of Si, Ti, and W were obtained using a Si K\(_{\alpha 1}\) X-ray energy resolution of 9.7 eV FWHM.KeywordsTES microcalorimeterScanning-transmission electron microscopeEnergy dispersive spectroscopyDry-dilution refrigeratorRemote He cooling loop