The Experts below are selected from a list of 20517 Experts worldwide ranked by ideXlab platform
Brett Depaola - One of the best experts on this subject based on the ideXlab platform.
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Absolute Charge Capture cross sections from a Rydberg target: experimental results and comparison with theoretical models
Journal of Physics B: Atomic Molecular and Optical Physics, 1997Co-Authors: M.-t. Huang, Martin P Stockli, C. W. Fehrenbach, Stephen R. Lundeen, Brett DepaolaAbstract:Absolute Charge Capture cross sections from laser excited rubidium Rydberg atoms have been measured for projectile velocities between 0.05 and 0.6 atomic units, and for projectile Charges of 2, 4, 8, 16, 32, and 40. The results are compared with predictions of the Bohr - Lindhard model and classical trajectory Monte Carlo calculations. The data are also presented in a Knudsen plot, which demonstrates a convenient scaling law based on the Bohr - Lindhard model.
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Charge Capture from Rydberg Targets: Comparison Between Theory and Experiment
Bulletin of the American Physical Society, 1996Co-Authors: M.-t. Huang, Brett Depaola, M.p. Stoeckli, C. W. Fehrenbach, Stephen R. LundeenAbstract:Absolute Charge Capture cross sections from laser excited rubidium Rydberg atoms have been measured from projectile velocities between 0.05 and 0.6 atomic units, and for projectile Charges of 2, 4, 8, 16, 32, and 40. Projectile Charge state dependence of Capture cross sections at low projectile velocities are compared with predictions of the Bohr-Linhard model and with the results of CTMC calculations. To further test the Bohr-Linhard model, the appropriately scaled data are presented in a {open_quotes}Knudsen plot{close_quotes} and compared with reported Capture cross sections between highly Charged ions and ground state hydrogen. In general, the results are in excellent agreement with the classical calculations.
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Absolute cross sections for Charge Capture from Rydberg targets by slow highly Charged ions.
Physical review. A Atomic molecular and optical physics, 1995Co-Authors: Brett Depaola, Martin P Stockli, M.-t. Huang, C. W. Fehrenbach, Stephen R. Lundeen, S. Winecki, Y. Kanai, S. A. ArkoAbstract:A crossed beam experiment has been used to measure absolute Charge Capture cross sections in collisions of slow highly Charged xenon ions with laser excited Rydberg atoms. The cross sections were measured for scaled projectile velocities {ital nv}{sub {ital p}} from 1.0 to 6.0, for projectile Charges of 8, 16, 32, and 40, where {ital n} is the principal quantum number of the target electron. Experimental cross sections are compared with predictions of classical models.
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Velocity dependence of absolute cross sections for Charge Capture by Ar7+ from ground-state and excited-state sodium.
Physical review. A Atomic molecular and optical physics, 1993Co-Authors: S. Maleki, B. Walch, Martin P Stockli, M. L. A. Raphaelian, Brett DepaolaAbstract:A Charge-transfer experiment has been done in which Ar 7+ was incident on sodium in the ground state and first excited state. Absolute Capture cross sections were determined for projectile velocities in the range of 0.1-1.0 a.u. The experimental findings are compared with the results of semiclassical calculations
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Enhancement of Charge Capture from a laser-excited target by highly Charged ions.
Physical review. A Atomic molecular and optical physics, 1993Co-Authors: B. Walch, S. Maleki, R. Ali, Martin P Stockli, M. L. A. Raphaelian, C. L. Cocke, Brett DepaolaAbstract:A Charge-transfer experiment has been done in which 63-keV ${\mathrm{Ar}}^{7+}$ was incident on sodium in the ground and first excited states. The electron-Capture ratio \ensuremath{\sigma}(Na(3p))/\ensuremath{\sigma}(Na(3s)) was experimentally determined for this system. The Charge-Capture cross section was observed to increase by a factor of 1.5 for the excited target.
Michael G. Robinson - One of the best experts on this subject based on the ideXlab platform.
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Analog nonvolatile data storage and update in an optically addressed spatial light modulator
Optics Letters, 1992Co-Authors: Michael G. RobinsonAbstract:Experimental results are presented on the nonvolatile analog storage and update of data in a bistable optically addressed, amorphous silicon, ferroelectric liquid-crystal spatial light modulator. Integration of positive and negative optical updates is observed and attributed to ferroelectric domain formation. A computer simulation is used to describe a possible mechanism for this domain formation based on spatially distributed Charge Capture, with good agreement obtained between simulated and experimental results.
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Analog nonvolatile data storage and update in an optically addressed spatial light modulator
Optics Letters, 1992Co-Authors: Michael G. RobinsonAbstract:Experimental results are presented on the nonvolatile analog storage and update of data in a bistable optically addressed, amorphous silicon, ferroelectric liquid-crystal spatial light modulator. Integration of positive and negative optical updates is observed and attributed to ferroelectric domain formation. A computer simulation is used to describe a possible mechanism for this domain formation based on spatially distributed Charge Capture, with good agreement obtained between simulated and experimental results.
Stephen R. Lundeen - One of the best experts on this subject based on the ideXlab platform.
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Absolute Charge Capture cross sections from a Rydberg target: experimental results and comparison with theoretical models
Journal of Physics B: Atomic Molecular and Optical Physics, 1997Co-Authors: M.-t. Huang, Martin P Stockli, C. W. Fehrenbach, Stephen R. Lundeen, Brett DepaolaAbstract:Absolute Charge Capture cross sections from laser excited rubidium Rydberg atoms have been measured for projectile velocities between 0.05 and 0.6 atomic units, and for projectile Charges of 2, 4, 8, 16, 32, and 40. The results are compared with predictions of the Bohr - Lindhard model and classical trajectory Monte Carlo calculations. The data are also presented in a Knudsen plot, which demonstrates a convenient scaling law based on the Bohr - Lindhard model.
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Charge Capture from Rydberg Targets: Comparison Between Theory and Experiment
Bulletin of the American Physical Society, 1996Co-Authors: M.-t. Huang, Brett Depaola, M.p. Stoeckli, C. W. Fehrenbach, Stephen R. LundeenAbstract:Absolute Charge Capture cross sections from laser excited rubidium Rydberg atoms have been measured from projectile velocities between 0.05 and 0.6 atomic units, and for projectile Charges of 2, 4, 8, 16, 32, and 40. Projectile Charge state dependence of Capture cross sections at low projectile velocities are compared with predictions of the Bohr-Linhard model and with the results of CTMC calculations. To further test the Bohr-Linhard model, the appropriately scaled data are presented in a {open_quotes}Knudsen plot{close_quotes} and compared with reported Capture cross sections between highly Charged ions and ground state hydrogen. In general, the results are in excellent agreement with the classical calculations.
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Absolute cross sections for Charge Capture from Rydberg targets by slow highly Charged ions.
Physical review. A Atomic molecular and optical physics, 1995Co-Authors: Brett Depaola, Martin P Stockli, M.-t. Huang, C. W. Fehrenbach, Stephen R. Lundeen, S. Winecki, Y. Kanai, S. A. ArkoAbstract:A crossed beam experiment has been used to measure absolute Charge Capture cross sections in collisions of slow highly Charged xenon ions with laser excited Rydberg atoms. The cross sections were measured for scaled projectile velocities {ital nv}{sub {ital p}} from 1.0 to 6.0, for projectile Charges of 8, 16, 32, and 40, where {ital n} is the principal quantum number of the target electron. Experimental cross sections are compared with predictions of classical models.
M.-t. Huang - One of the best experts on this subject based on the ideXlab platform.
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Absolute Charge Capture cross sections from a Rydberg target: experimental results and comparison with theoretical models
Journal of Physics B: Atomic Molecular and Optical Physics, 1997Co-Authors: M.-t. Huang, Martin P Stockli, C. W. Fehrenbach, Stephen R. Lundeen, Brett DepaolaAbstract:Absolute Charge Capture cross sections from laser excited rubidium Rydberg atoms have been measured for projectile velocities between 0.05 and 0.6 atomic units, and for projectile Charges of 2, 4, 8, 16, 32, and 40. The results are compared with predictions of the Bohr - Lindhard model and classical trajectory Monte Carlo calculations. The data are also presented in a Knudsen plot, which demonstrates a convenient scaling law based on the Bohr - Lindhard model.
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Charge Capture from Rydberg Targets: Comparison Between Theory and Experiment
Bulletin of the American Physical Society, 1996Co-Authors: M.-t. Huang, Brett Depaola, M.p. Stoeckli, C. W. Fehrenbach, Stephen R. LundeenAbstract:Absolute Charge Capture cross sections from laser excited rubidium Rydberg atoms have been measured from projectile velocities between 0.05 and 0.6 atomic units, and for projectile Charges of 2, 4, 8, 16, 32, and 40. Projectile Charge state dependence of Capture cross sections at low projectile velocities are compared with predictions of the Bohr-Linhard model and with the results of CTMC calculations. To further test the Bohr-Linhard model, the appropriately scaled data are presented in a {open_quotes}Knudsen plot{close_quotes} and compared with reported Capture cross sections between highly Charged ions and ground state hydrogen. In general, the results are in excellent agreement with the classical calculations.
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Absolute cross sections for Charge Capture from Rydberg targets by slow highly Charged ions.
Physical review. A Atomic molecular and optical physics, 1995Co-Authors: Brett Depaola, Martin P Stockli, M.-t. Huang, C. W. Fehrenbach, Stephen R. Lundeen, S. Winecki, Y. Kanai, S. A. ArkoAbstract:A crossed beam experiment has been used to measure absolute Charge Capture cross sections in collisions of slow highly Charged xenon ions with laser excited Rydberg atoms. The cross sections were measured for scaled projectile velocities {ital nv}{sub {ital p}} from 1.0 to 6.0, for projectile Charges of 8, 16, 32, and 40, where {ital n} is the principal quantum number of the target electron. Experimental cross sections are compared with predictions of classical models.
Simone Hochgreb - One of the best experts on this subject based on the ideXlab platform.
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Measuring aerosol active surface area by direct ultraviolet photoionization and Charge Capture in continuous flow
Aerosol Science and Technology, 2019Co-Authors: Robert T. Nishida, Adam M. Boies, Tyler J. Johnson, Simone HochgrebAbstract:AbstractDirect ultraviolet photoionization electrically Charges particles using a mechanism distinct from diffusion charging. The purpose of this study is to evaluate aerosol photoemission theory a...
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measuring ultrafine aerosols by direct photoionization and Charge Capture in continuous flow
Aerosol Science and Technology, 2018Co-Authors: Robert T. Nishida, Adam M. Boies, Simone HochgrebAbstract:© 2018 American Association for Aerosol Research. Direct ultraviolet (UV) photoionization enables electrical charging of aerosol nanoparticles without relying on the collision of particles and ions. In this work, a low-strength electric field is applied during particle photoionization to Capture Charge as it is photoemitted from the particles in continuous flow, yielding a novel electrical current measurement. As in conventional photocharging-based measurement devices, a distinct electrical current from the remaining photoCharged particles is also measured downstream. The two distinct measured currents are proportional to the total photoelectrically active area of the particles. A three-dimensional numerical model for particle and ion (dis)charging and transport is evaluated by comparing simulations of integrated electric currents with those from Charged soot particles and ions in an experimental photoionization chamber. The model and experiment show good quantitative agreement for a single empirical constant, KcI, over a range of particle sizes and concentrations providing confidence in the theoretical equations and numerical method used. Copyright © 2018 American Association for Aerosol Research.
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Measuring ultrafine aerosols by direct photoionization and Charge Capture in continuous flow
Aerosol Science and Technology, 2018Co-Authors: Robert T. Nishida, Adam M. Boies, Simone HochgrebAbstract:ABSTRACTDirect ultraviolet (UV) photoionization enables electrical charging of aerosol nanoparticles without relying on the collision of particles and ions. In this work, a low-strength electric fi...