X-ray transmission characteristics measurement of a polycapillary lens installed in an analytical electron microscope

Akira Takano, Keisuke Maehata, Naoko Iyomoto, Toru Hara, Kazuhisa Mitsuda, Noriko Yamasaki, Keiichi Tanaka

研究成果: Chapter in Book/Report/Conference proceedingConference contribution

抄録

An energy dispersive spectrometer with a superconducting transition edge sensor (TES) microcalorimeter mounted on a transmission electron microscope (TEM) has been developed to improve the accuracy of nanoscale material analysis. TES microcalorimeters generally have a sensitive surface area on the order of 100 × 100 μm2. Furthermore, because of the magnetic field generated by the TEM objective lens, a TES microcalorimeter cannot be placed in a TEM column. Therefore, a polycapillary lens is used for collecting X-rays emitted by a TEM specimen on the TES microcalorimeter. The X-ray transmission characteristics of the polycapillary lens typically depend on the geometrical arrangements of the optics and the X-ray energy. Energy spectrum measurements were carried out for X-rays transmitted by a polycapillary lens installed in a TEM for evaluating X-ray transmission characteristics of the optics. Values of the focal spot size and the intensity gain were obtained by analyzing the experimental energy spectra in the energy range of 1.0-14.0 keV.

本文言語英語
ホスト出版物のタイトル2014 IEEE Nuclear Science Symposium and Medical Imaging Conference, NSS/MIC 2014
出版社Institute of Electrical and Electronics Engineers Inc.
ISBN(電子版)9781479960972
DOI
出版ステータス出版済み - 3 10 2016
イベントIEEE Nuclear Science Symposium and Medical Imaging Conference, NSS/MIC 2014 - Seattle, 米国
継続期間: 11 8 201411 15 2014

出版物シリーズ

名前2014 IEEE Nuclear Science Symposium and Medical Imaging Conference, NSS/MIC 2014

その他

その他IEEE Nuclear Science Symposium and Medical Imaging Conference, NSS/MIC 2014
国/地域米国
CitySeattle
Period11/8/1411/15/14

All Science Journal Classification (ASJC) codes

  • 核物理学および高エネルギー物理学
  • 放射線学、核医学およびイメージング

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