SEARCH · Engineering Papers
Results for “beam”
Search indexed NASA NTRS and DOE OSTI research on propulsion, heat transfer, battery materials and energy systems. Follow report and document links to the original sources.
Quote a phrase for an exact phrase match. Source license links do not imply unrestricted reuse.
Transport properties of Bi 2 (Se 1-x Te x ) 3 thin films grown by molecular beam epitaxy
Not provided.
Temperature-dependent growth window of CaTiO 3 films grown by hybrid molecular beam epitaxy
Not provided.
Improved control of electron computer-generated holographic grating groove profiles using ion beam gas-assisted etching
In a transmission electron microscope, electrons are described by matter-waves with wavelengths five orders of magnitude smaller than optical electromagnetic waves. Analogous to optical holography, electron wavefronts can be shaped using nanoscale holographic gratings. Here we demonstrate a novel, scalable nanofabrication method for creating off-axis holographic gratings that demonstrate near ideal diffraction efficiencies for binary, sinusoidal, and blazed grating groove profiles. We show that this method can produce up to 50 µm diameter area gratings that diffract up to 68% of the transmitted electron wave into a desired diffraction order with less than 7% into any other order. Additionally, we find that the amount of inelastically scattered electrons from the material gratings remaining in the coherent diffraction orders from the gratings is negligible in the far field.
Generation of quasi-coherent cylindrical vector beams by leaky mirrorless laser
Explore the source record for details and available documents.
Achromatic Wollaston prism beam splitter using polarization gratings
Not Available
High relative-phase precision beam duplicator for mid-infrared femtosecond pulses
Not Available
ARCS White Beam Vanadium Normalization Data for SNS Cycle 2023B
A data set used to normalize the detector response of the ARCS instrument see ARCS_256693.md in the data set for more details.
ARCS White Beam Vanadium Normalization Data for SNS Cycle 2015B
A data set used to normalize the detector response of the ARCS instrument see ARCS_58221.md in the data set for more details.
ARCS White Beam Vanadium Normalization Data for SNS Cycle 2025A
A data set used to normalize the detector response of the ARCS instrument. See ARCS_295641.md in the data set for more details.
ARCS White Beam Vanadium Normalization Data for SNS Cycle 2026A
A data set used to normalize the detector response of the ARCS instrument. See ARCS_336659.md in the data set for more details.
Implementation of a 1550-nm laser system for beam characterization at the Argonne Wakefield Accelerator
Accurately recording an electron bunch’s longitudinal profile is an important diagnostic for wakefield accelerators employing shaped bunches to increase transformer ratios. Electro-optic sampling of terahertz radiation from the bunch is an attractive approach due to its non-destructive nature. In preparation for future characterization experiments, the Argonne Wakefield Accelerator test facility has recently installed a 1550 nm laser system, including the necessary support systems to synchronize with the photoinjector laser system at 81.25 MHz. We report here on the initial installation and synchronization demonstrations.
Engineering consequences of beam dynamics I: Beam breakup and corkscrew
No abstract provided
Ion Beam Projects to Address 2017 Walkdown – Assessment of Ion Beam Facility Recommendations to Facilitate Transfer to EM [Slides]
Abstract not provided.
End-point Energy Determination of Electron Beams from the Saturn Accelerator 3-Ring Pinched Beam Diode.
Abstract not provided.