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Using Synchrotron Radiation Microtomography to Investigate Multi-scale Three-dimensional Microelectronic Packages
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Time-resolved soft x-ray absorption setup using multi-bunch operation modes at synchrotrons.

L Stebel1, M Malvestuto, V Capogrosso

  • 1Sincrotrone Trieste, S.S. 14 km 163.5, Area Science Park, 34149 Basovizza (Ts), Italy.

The Review of Scientific Instruments
|January 10, 2012
PubMed
Summary
This summary is machine-generated.

This study introduces a new setup for ultrafast time-resolved soft x-ray absorption spectroscopy. It enables sub-nanosecond measurements using synchrotron radiation, advancing dynamic material studies.

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Area of Science:

  • Materials Science
  • Spectroscopy
  • Physics

Background:

  • Time-resolved spectroscopy is crucial for understanding dynamic processes.
  • Previous methods had limitations in time resolution and data acquisition.

Purpose of the Study:

  • To develop a novel experimental apparatus for sub-nanosecond time-resolved soft x-ray absorption spectroscopy.
  • To utilize non-hybrid multi-bunch mode synchrotron radiation for enhanced experimental capabilities.

Main Methods:

  • A variable repetition rate Ti:sapphire laser was synchronized with ~500 MHz synchrotron radiation bunches.
  • A custom photon counting unit was employed for discriminating and selecting x-ray photon pulses.
  • The setup was validated using germanium (Ge) single crystal dynamics.

Main Results:

  • Successfully performed time-resolved soft x-ray absorption spectroscopy at the sub-nanosecond timescale.
  • Observed the time evolution of the L(3) absorption edge during laser-induced melting and solidification of Ge.
  • Demonstrated the capability of the apparatus to capture rapid material phase transitions.

Conclusions:

  • The developed apparatus enables high time-resolution synchrotron-based experiments.
  • This opens new avenues for studying ultrafast dynamics in materials.
  • The method allows for variable repetition rates and full exploitation of synchrotron flux.