Search Results - "Gordon, D.F"

Special unitary particle pusher for extreme fields by Gordon, D.F., Hafizi, B.

“…An exact momentum update useful for particle codes was previously given. The expressions involved were unwieldy. By treating the momentum as a representation…”
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Amplitude flux, probability flux, and gauge invariance in the finite volume scheme for the Schrödinger equation by Gordon, D.F., Hafizi, B., Landsman, A.S.

“…The time-dependent Schrödinger equation can be put in a probability conserving, gauge invariant form, on arbitrary structured grids via finite volume…”
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A thyrotrope-specific variant of Pit-1 transactivates the thyrotropin beta promoter by HAUGEN, B. R, WOOD, W. M, GORDON, D. F, RIDGWAY, E. C

“…Thyrotropin (TSH) beta is a subunit of TSH, the expression of which is limited to the thyrotrope cells of the anterior pituitary gland. Tissue-specific…”
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TurboPy: A lightweight python framework for computational physics by Richardson, A.S., Gordon, D.F., Swanekamp, S.B., Rittersdorf, I.M., Adamson, P.E., Grannis, O.S., Morgan, G.T., Ostenfeld, A., Phlips, K.L., Sun, C.G., Tang, G., Watkins, D.J.

“…Computational physics problems often have a common set of aspects to them that any particular numerical code will have to address. Because these aspects are…”
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Time dependent Schroedinger equation on arbitrary structured grids: Application to photoionization by Gordon, D F, Hafizi, B

“…A systematic technique for conservatively discretizing the time dependent Schroedinger equation on an arbitrary structured grid is given. Spatial differencing…”
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Amplitude flux, probability flux, and gauge invariance in the finite volume scheme for the Schrödinger equation by Gordon, D.F., Hafizi, B., Landsman, A.S.

“…The time-dependent Schrödinger equation can be put in a probability conserving, gauge invariant form, on arbitrary structured grids via finite volume…”
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Solution of relativistic quantum optics problems using clusters of graphical processing units by Gordon, D.F., Hafizi, B., Helle, M.H.

“…Numerical solution of relativistic quantum optics problems requires high performance computing due to the rapid oscillations in a relativistic wavefunction…”
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Time dependent Schrödinger equation on arbitrary structured grids: Application to photoionization by Gordon, D.F., Hafizi, B.

“…A systematic technique for conservatively discretizing the time dependent Schrödinger equation on an arbitrary structured grid is given. Spatial differencing…”
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Fully explicit nonlinear optics model in a particle-in-cell framework by Gordon, D.F., Helle, M.H., Peñano, J.R.

“…A numerical technique which incorporates the nonlinear optics of anisotropic crystals into a particle-in-cell framework is described. The model is useful for…”
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Conductivity Measurements of Femtosecond Laser-Plasma Filaments by Fischer, R.P., Ting, A.C., Gordon, D.F., Fernsler, R.F., DiComo, G.P., Sprangle, P.

“…Experiments are performed to characterize the electrical properties of plasma filaments that are generated by self- guided femtosecond laser pulses propagating…”
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Improved Ponderomotive Guiding Center Algorithm by Gordon, D.F.

“…The original implementation of the ponderomotive guiding center algorithm is not suitable for modeling the propagation of short laser pulses over long…”
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Longitudinal profiles of plasma parameters in a laser-ignited capillary discharge and implications for laser wakefield accelerator applications by Levin, M., Pukhov, A., Hubbard, R. F., Kaganovich, D., Gordon, D. F., Sprangle, P., Ting, A., Hafizi, B., Zigler, A.

“…The evolution of longitudinal electron density and temperature profiles in plasma channel produced by a low-current Plexiglas capillary discharge with laser…”
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A ponderomotive guiding center particle-in-cell code for efficient modeling of laser-plasma interactions by Gordon, D.F., Mori, W.B., Antonsen, T.M.

“…A novel particle simulation code is described that self-consistently models certain classes of laser-plasma interactions without resolving the optical cycles…”
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Coronary Artery Spasm Following Coronary Artery Revascularization by Zeff, R.H., Iannone, L.A., Kongtahworn, C., Brown, T.M., Gordon, D.F., Benson, M., Phillips, S.J., Alley, R.E.

“…Coronary artery spasm is a well-documented phenomenon in patients undergoing medical treatment. We describe coronary artery spasm occurring in the immediate…”
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Laser heating of air plasmas seeded by ultrashort pulse filaments by Gordon, D.F., Sprangle, P., Ting, A., Helle, M.H., Hafizi, B., Zigler, A.

“…The air plasma produced by an ultrashort pulse laser filament can be used as a source of seed electrons for subsequent heating and breakdown by a higher energy…”
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Direct measurements of the dynamics of self-guided femtosecond laser filaments in air by Gordon, D.F., Ting, A.C., Alexeev, I., Fischer, R.P., Sprangle, P.

“…Imaging of femtosecond laser filaments is accomplished by utilizing a recently developed diagnostic which is not damaged by the filaments and which greatly…”
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Trapping and acceleration of nonideal injected electron bunches in laser Wakefield accelerators by Hubbard, R.F., Gordon, D.F., Cooley, J.H., Hafizi, B., Jones, T.G., Kaganovich, D., Sprangle, P., Ting, A.C., Zigler, A., Dexter, J.

“…Most conceptual designs for future laser wakefield accelerators (LWFA) require external injection of precisely-phased, monoenergetic, ultrashort bunches of MeV…”
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Requirements for a laser pumped FEL operating in the X-ray regime by Gordon, D.F., Sprangle, P., Hafizi, B., Roberson, C.W.

“…A laser pumped free electron laser (FEL) can in principle generate coherent, polarized, high power X-rays using a much lower energy electron beam than would be…”
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Studies of the predominant cultivable micro-organisms from the human tongue by Gordon, Jr, D F, Gibbons, R J

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Generation of high-energy electrons in a double gas jet and laser wakefield acceleration by Kaganovich, D., Ting, A.C., Gordon, D.F., Jones, T.G., Zigler, A., Hubbard, R.F., Sprangle, P.

“…High-energy electrons were generated by the synchronized interaction of a 2-TW laser beam with a nitrogen gas jet and a 10-TW laser beam with helium gas jet…”
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