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An equivalent time temperature mapping system with a 320 x 256 pixels full-frame 100 kHz sampling rate.

M Riccio1, G Breglio, A Irace

  • 1Dipartimento di Ingegneria Elettronica e delle Telecomunicazioni, Università degli Studi di Napoli Federico II, Via Claudio 21, 80125 Napoli, Italia.

The Review of Scientific Instruments
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Summary
This summary is machine-generated.

This study presents a novel infrared temperature mapping system using equivalent time sampling. The system achieves 100 kHz bandwidth for ultrafast temperature transient measurements, surpassing standard IR camera limitations.

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Area of Science:

  • Physics
  • Engineering
  • Materials Science

Background:

  • Ultrafast temperature transients require high acquisition rates exceeding standard infrared camera capabilities.
  • Measuring rapid temperature changes is crucial in various scientific and industrial applications.

Purpose of the Study:

  • To develop a novel temperature mapping system for measuring ultrafast temperature transients.
  • To adapt the equivalent time sampling concept for enhanced temperature acquisition.

Main Methods:

  • Utilized a standard infrared camera with a 50 Hz frame rate.
  • Implemented an indium antimonide (InSb) sensor with a 10-microsecond integration time.
  • Developed a custom digital synchronization circuit for precise timing control.

Main Results:

  • Achieved an equivalent bandwidth of 100 kHz for full-frame temperature transient detection.
  • Demonstrated the system's capability to measure temperature changes far faster than conventional IR cameras.
  • Successfully synchronized the IR camera, experiment, and data acquisition system.

Conclusions:

  • The developed system effectively measures ultrafast temperature transients.
  • Equivalent time sampling combined with a fast InSb sensor and custom synchronization overcomes standard IR camera limitations.
  • This novel approach significantly advances the field of high-speed thermal analysis.