A Low-Voltage Electron-Beam Oscillograph

Development of a Prototype Low-voltage Electron Beam Freeform Fabrication System

NASA’s Langley Research Center and Johnson Space Center are developing a solid freeform fabrication system utilizing an electron beam energy source and wire feedstock. This system will serve as a testbed for exploring the influence of gravitational acceleration on the deposition process and will be a simplified prototype for future systems that may be deployed during long-duration space mission...

Investigation of Electron Beam Induced Mass Loss of Embedding Media in the Low Voltage STEM

The STEM (scanning transmission electron microscope) is useful device combining features of scanning and transmission electron microscopes. The sample in form of ultrathin section is scanned by the electron probe and the transmitted electrons are detected. Except the dedicated STEMs [1] this mode can exist as options in both TEM and SEM [2]. The STEM based on the SEM equipped by a transmission ...

Imaging electron detectors for low-voltage TEM

Digital Oscillograph

Design Introduction The digital storage oscillograph uses a microprocessor for control and data proccesing. It performs a variety of functions that simulation oscillographs cannot, such as leading triggering, combined triggering, burr capture, wave processing, hard-copy export, soft-disk recording, and long-term waveform storage. Typically, the digital storage oscillograph’s bandwidth exceeds 1...

High Voltage Environmental Applications, Inc: Electron Beam Technology

peer and administrative reviews and was approved for publication as an EPA document. Mention of trade names or commercial products does not constitute an endorsement or recommendation for use. iii The U.S. Environmental Protection Agency is charged by Congress with protecting the nation's land, air, and water resources. Under a mandate of national environmental laws, the Agency strives to formu...