Development of Ultrafast Pulse X-ray Source in Ambient Pressure with a Millijoule High Repetition Rate Femtosecond Laser

Masaki Hada, Jiro Matsuo

Research output: Chapter in Book/Report/Conference proceedingChapter

Abstract

High intensity Cu Kα X-ray was generated in helium at atmospheric (760 Torr) using a commercial millijoule high-repetition rate Ti: sapphire laser. The characteristic Kα X-ray was generated by focusing the 0.06-1.46 mJ, 100 fs and 1 kHz repetition femtosecond laser onto a solid Cu target to a spot with a 5 μm diameter. We obtained the characteristic Kα X-ray of 5.4 × 109 photos per second into 2π sr at a 1 kHz repetition rate with 5.0 × 10-6 conversion efficiency. The X-ray intensity and conversion efficiency in helium achieved the almost the same level as in vacuum. Such vacuum-free femtosecond X-ray source with a table-top laser can be a promising and easy accessible tool for time-resolved X-ray diffraction and other radiographic applications.

Original languageEnglish
Title of host publicationZero-Carbon Energy Kyoto 2009
Subtitle of host publicationProceedings of the First International Symposium of Global COE Program "Energy Science in the Age of Global Warming-Toward CO2 Zero-emission Energy System"
Pages300-305
Number of pages6
DOIs
Publication statusPublished - Dec 1 2010

Publication series

NameGreen Energy and Technology
Volume44
ISSN (Print)1865-3529
ISSN (Electronic)1865-3537

Keywords

  • Femtosecond laser
  • Laser-induced plasma
  • X-ray

ASJC Scopus subject areas

  • Renewable Energy, Sustainability and the Environment
  • Energy Engineering and Power Technology
  • Industrial and Manufacturing Engineering
  • Management, Monitoring, Policy and Law

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    Hada, M., & Matsuo, J. (2010). Development of Ultrafast Pulse X-ray Source in Ambient Pressure with a Millijoule High Repetition Rate Femtosecond Laser. In Zero-Carbon Energy Kyoto 2009: Proceedings of the First International Symposium of Global COE Program "Energy Science in the Age of Global Warming-Toward CO2 Zero-emission Energy System" (pp. 300-305). (Green Energy and Technology; Vol. 44). https://doi.org/10.1007/978-4-431-99779-5_47