Stationary scanning x-ray source based on carbon nanotube field emitters

Journal Article · Mon May 02 00:00:00 EDT 2005 · Applied Physics Letters

DOI:https://doi.org/10.1063/1.1923750· OSTI ID:20702325

Zhang, J; Yang, G; Cheng, Y; Gao, B; Qiu, Q; Lee, Y Z; Lu, J P; Zhou, O ^[1]

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1. Department of Physics and Astronomy, University of North Carolina, Chapel Hill, North Carolina 27599 (United States)

We report a field emission x-ray source that can generate a scanning x-ray beam to image an object from multiple projection angles without mechanical motion. The key component of the device is a gated carbon nanotube field emission cathode with an array of electron emitting pixels that are individually addressable via a metal-oxide-semiconductor field effect transistor-based electronic circuit. The characteristics of this x-ray source are measured and its imaging capability is demonstrated. The device can potentially lead to a fast data acquisition rate for laminography and tomosynthesis with a simplified experimental setup.

• OSTI ID: 20702325
• Journal Information: Applied Physics Letters, Vol. 86, Issue 18; Other Information: DOI: 10.1063/1.1923750; (c) 2005 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); ISSN 0003-6951
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
CARBON
CATHODES
DATA ACQUISITION
ELECTRONIC CIRCUITS
FIELD EFFECT TRANSISTORS
FIELD EMISSION
IMAGES
NANOTUBES
SEMICONDUCTOR MATERIALS
TOMOGRAPHY
X-RAY SOURCES
X-RAY TUBES