TY - JOUR

T1 - Time-resolved NH2 radical detection using 1.5 μm DFB laser

AU - Plastinina, Daria M.

AU - Chesnokov, Evgenii N.

N1 - This work was funded by the Russian Science Foundation [grant no. 19–73-20060].

PY - 2025/6

Y1 - 2025/6

N2 - Using a tunable DFB diode laser, 17 absorption lines of the NH2 radical in the range of 6451–6474 cm−1 were detected. The amidogen radical was produced by the photolysis of NH3. The frequencies and intensities of absorption lines were obtained. Using the strongest line at 6465.13 cm−1, the recombination kinetics was measured. Obtained value 2.6 × 10−12 cm3/s is in the reasonable agreement with the literature data. The results will expand the capabilities of the DFB laser usage technique for studying elementary reactions that are important in the chemistry of nitrogen-containing fuel combustion.

AB - Using a tunable DFB diode laser, 17 absorption lines of the NH2 radical in the range of 6451–6474 cm−1 were detected. The amidogen radical was produced by the photolysis of NH3. The frequencies and intensities of absorption lines were obtained. Using the strongest line at 6465.13 cm−1, the recombination kinetics was measured. Obtained value 2.6 × 10−12 cm3/s is in the reasonable agreement with the literature data. The results will expand the capabilities of the DFB laser usage technique for studying elementary reactions that are important in the chemistry of nitrogen-containing fuel combustion.

KW - Absorption spectroscopy

KW - Amidogen radical

KW - DFB laser diode, overtone region

KW - Recombination rate constant

UR - https://www.mendeley.com/catalogue/dd3093bd-119c-3d3b-8302-d4247ce1f45a/

UR - https://www.scopus.com/record/display.uri?eid=2-s2.0-105001740049&origin=inward&txGid=63cd3af97d528339b0515b99ec45729e

U2 - 10.1016/j.cplett.2025.142068

DO - 10.1016/j.cplett.2025.142068

M3 - Article

VL - 868

JO - Chemical Physics Letters

JF - Chemical Physics Letters

SN - 0009-2614

ER -