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Unfocused laser ignition of high-pressure He–H2-O2 combustible mixtures
Grosso Ferreira, R.; Carvalho, B.; Rodrigues, José-António; Rodrigues, R.; Smith, A.; Marraffa, L.; Lino da Silva, M.We report consistent ignition of high-pressure (p(fill)>20-30 bar) hydrogen-oxygen mixtures diluted with helium in two different combustion vessels, using an unfocused Nd:YAG laser. This corresponds to laser irradiances several orders of magnitude below the minimum ignition energies reported in the literature. This unusual phenomena has led us to try to measure the amount of laser radiation absorbed by the gas ...
Date: 2024
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Origin: Sapientia - Universidade do Algarve