What question did this study set out to answer?

The aim is to achieve fast and accurate simultaneous measurements of NO, H₂O, and temperature in dynamic conditions using an intrapulse laser.

June 4, 2026Open Access

Simultaneous dynamic NO, H2O, and temperature measurement using an intrapulse laser with MHz time resolution

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Randomized trial demonstrates simultaneous measurement of NO, H₂O, and temperature in dynamic conditions, indicating high accuracy.

The aim is to achieve fast and accurate simultaneous measurements of NO, H₂O, and temperature in dynamic conditions using an intrapulse laser.
Integrated a shock tube with an intrapulse laser and three independent lasers.
Operated at a 900 kHz repetition rate and utilized a two-line thermometry method.
Developed a method for addressing rapid passage effects under low-pressure conditions.
NO mole fraction measured with an average relative difference of 4.5%.
H₂O mole fraction showed an average relative difference of 7.0%.
Temperature measurements aligned well with one-dimensional shock equation calculations, with a 5.4% average relative difference.

Zhu et al. (2026) studied this question.

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