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Fields & Applications Chemical, Spectroscopy

Explosive Experimentation

What?

Researchers have developed a novel method to study explosions using infrared spectroscopy. Specifically, broadband Swept-wavelength external cavity quantum cascade laser (swept-ECQCL) spectroscopy allows the acquisition of absorption spectra for chemical products produced within explosive fireballs – with the impressive sampling rate of 500 kHz (1).

How?

Directing a laser generated by the swept-ECQCL device through the fireball, the team were able to monitor changes in chemical composition over the first 10 ms post-explosion. Beyond that initial period – and up to the 100 second mark, the team used broadband high-resolution absorption spectra acquired over the spectral range of 2050–2300 cm−1 at a 100 Hz rate.

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About the Author

Jonathan James

Having thrown myself into various science communication activities whilst studying science at University, I soon came to realize where my passions truly lie; outside the laboratory, telling the stories of the remarkable men and women conducting groundbreaking research. Now, at Texere, I have the opportunity to do just that.

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