Kinetics of NF(a1delta), NF(X3E), and chemically pumped NF(b1E)

Bruce H. Weiller; Raymond F. Heidner III; J. Brooke Koffend

doi:10.1117/12.145236

6 June 1993 Kinetics of NF(a¹delta), NF(X³E), and chemically pumped NF(b¹E)

Bruce H. Weiller, Raymond F. Heidner III, J. Brooke Koffend

Proceedings Volume 1871, Intense Laser Beams and Applications; (1993) https://doi.org/10.1117/12.145236
Event: OE/LASE'93: Optics, Electro-Optics, and Laser Applications in Scienceand Engineering, 1993, Los Angeles, CA, United States

Abstract

We have been investigating kinetics issues associated with the development of a new chemical laser in the green based on the b-X transition of NF at 529 nm. The proposed scheme involves energy pooling of NF(a¹(Delta) ) with I^*(²P_1/2) to form NF(b¹(Sigma) ). The kinetics of NF(a) and NF(X) have a strong impact on the relative populations of NF(X) and NF(b) and therefore play a central role in this system. We have measured the rate coefficients for the reactions of NF(a) and NF(X) with several relevant species including O₂, NF₂, N₂F₄, and I₂. We have also carried out a series of measurements on the energy pooling of I^* with NF(a) by photolyzing mixtures of HI and NF₂ at 193 nm to produce H atoms and NF(a). Using a flashlamp-pumped I^* laser, we optically prepared I^* to create a steady-state ratio of [I^*]/[I] during the 30 microsecond(s) laser pulse. This greatly simplifies the kinetics and allows us to extract rate constants for: NF(a) + I^* yields NF(b) + I, NF(b) + I yields NF(a) + I^*, and NF(b) + I yields other products.

Citation Download Citation

Bruce H. Weiller, Raymond F. Heidner III, and J. Brooke Koffend "Kinetics of NF(a¹delta), NF(X³E), and chemically pumped NF(b¹E)", Proc. SPIE 1871, Intense Laser Beams and Applications, (6 June 1993); https://doi.org/10.1117/12.145236

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