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Optimization of scandate high current density cathodes

Award Information

Department of Defense
Air Force
Award ID:
Program Year/Program:
2009 / STTR
Agency Tracking Number:
Solicitation Year:
Solicitation Topic Code:
Solicitation Number:
Small Business Information
Nanohmics, Inc
6201 East Oltorf St. Suite 400 Austin, TX 78741-7511
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Woman-Owned: No
Minority-Owned: No
HUBZone-Owned: No
Phase 2
Fiscal Year: 2009
Title: Optimization of scandate high current density cathodes
Agency / Branch: DOD / USAF
Contract: FA9550-09-C-0085
Award Amount: $749,943.00


Evolving commercial and military requirements for high-frequency power amplification are driving the demand for modern vacuum electronics devices. The explosion of wideband RF communications, space-based communication, and geolocation, as well as advanced military radars and directed energy sources, are placing new requirements on the electron-beam current density, beam emittance, module size, lifetime, and efficiency of vacuum electronic devices. Novel techniques for constructing slow-wave structures and advanced electron collectors are addressing the latter requirements, but cathode technology has not kept pace. One of the more promising cathodes are scandates with reports of emission currents over 100 A/cm2. Unfortunately, there is very little understanding of the underlying physics and limited knowledge of the emitting species and re-supply of the scandate material therefore no clear path to optimizing this cathodes operation. In this STTR program, Nanohmics and its University partner Ohio University, proposes to study the surface science of the scandate cathodes and use this information to optimize its emission performance and lifetime. Optimized cathodes will be tested in a TWT environment. This program will result in development of an optimized high current density commercial scandate cathode. BENEFIT: Development and optimization of a high current density, long lived, rugged cathode opens up applications in many areas. These include compact electron sources for klystrons, traveling wave tubes, and other RF- and microwave vacuum electronic devices as well as long life electron sources for X-ray tubes.

Principal Investigator:

Keith Jamison

Business Contact:

Keith Jamison
Small Business Information at Submission:

Nanohmics, Inc
6201 East Oltorf St. Suite 400 Austin, TX 78741

EIN/Tax ID: 743072245
Number of Employees: N/A
Woman-Owned: No
Minority-Owned: No
HUBZone-Owned: No
Research Institution Information:
Ohio University
Research and Sponsored Program
Research and Tech Center 105
Athens, OH 45701
Contact: Shane L. Gilkey
Contact Phone: (740) 593-2857
RI Type: Nonprofit college or university