Abstract
A high-resolution spectrometer based on a vertical-cavity surface-emitting laser (VCSEL) was developed and used to determine the line strength S(T 0)=12.53(11)×10−21 cm−1/(molec cm−2) and the self-broadening coefficient \(\gamma^{0}_{\mathrm{HCl}}=0.021787(61)\) cm−1/atm of the R(3) absorption line in the first rovibrational overtone (2←0) band of H35Cl. Furthermore, the first laser-based high-pressure study on the pressure broadening of HCl by He, N2 and \(\mathrm{O}_{2}(\gamma^{0}_{\mathrm{N}_{2}}=0.07292(5)\) cm−1/atm, \(\gamma^{0}_{\mathrm{He}}=0.02113(1)\) cm−1/atm, \(\gamma^{0}_{\mathrm{O}_{2}}=0.03978(6)\) cm−1/atm) is presented covering pressures of up to 1 MPa. The results are compared to previously available low-pressure data.
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Ortwein, P., Woiwode, W., Wagner, S. et al. Laser-based measurements of line strength, self- and pressure-broadening coefficients of the H35Cl R(3) absorption line in the first overtone region for pressures up to 1 MPa. Appl. Phys. B 100, 341–347 (2010). https://doi.org/10.1007/s00340-009-3862-8
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DOI: https://doi.org/10.1007/s00340-009-3862-8