@article{liu_peng_reppert_callahan_smith_2016, title={Laser Measurements of the H Atom plus Ozone Rate Constant at Mesospheric Temperatures}, volume={120}, ISSN={["1089-5639"]}, DOI={10.1021/acs.jpca.6b02986}, abstractNote={The exothermic H + O3 reaction produces OH(v) Meinel band emissions, used to derive mesospheric H concentrations and chemical heating rates. We remeasured its rate constant to reduce its uncertainty and extended the measurements to lower mesospheric temperatures using modern laser-induced fluorescence (LIF) techniques. H atoms were produced by pulsed ultraviolet laser trace photolysis of O3, followed by reaction of O((1)D) with added H2. A second, delayed, frequency-mixed dye laser measured the reaction decay rate with the remaining ozone using LIF. We monitored either the H atom decay by two photon excitation at 205 nm and detection of red fluorescence, or the OH (v = 9) product time evolution with excitation of the B(2)Σ(+)-X(2)Π (0,9) band at 237 nm and emission in the blue B(2)Σ(+)-A(2)Σ(+) (0,7) band. By cooling the enclosed low pressure flow cell we obtained measurements from 140 to 305 K at 20 to 200 Torr in Ar. Small kinetic modeling corrections were made for secondary regeneration of H atoms. The results are consistent with the current NASA JPL recommendation for this rate constant and establish its extrapolation down to the lower temperatures of the mesosphere.}, number={22}, journal={JOURNAL OF PHYSICAL CHEMISTRY A}, author={Liu, Yingdi and Peng, Jian and Reppert, Kelsey and Callahan, Sara and Smith, Gregory P.}, year={2016}, month={Jun}, pages={3855–3860} }
 @article{tran_lankford_read_ives_reppert_cline_guzman_2015, title={Optimization of Klystron Designs Using Deterministic Sampling Methods}, volume={62}, ISSN={0018-9383 1557-9646}, url={http://dx.doi.org/10.1109/ted.2015.2394479}, DOI={10.1109/ted.2015.2394479}, abstractNote={A method is presented for optimizing the design of klystron circuits. This automates the selection of cavity positions, resonant frequencies, quality factors, R/Q and other circuit parameters to maximize the efficiency with required gain. The method is based on deterministic sampling methods. In this paper, we describe the procedure and give several examples for both narrow-band and wideband klystrons, using the klystron codes AJDISK and TESLA.}, number={3}, journal={IEEE Transactions on Electron Devices}, publisher={Institute of Electrical and Electronics Engineers (IEEE)}, author={Tran, Hien and Lankford, George and Read, Michael E. and Ives, R. Lawrence and Reppert, Kelsey and Cline, Kayla and Guzman, Juan}, year={2015}, month={Mar}, pages={1032–1036} }