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Investigation of terahertz sheet beam traveling wave tube amplifier with nanocomposite cathode
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10.1063/1.3525098
/content/aip/journal/pop/17/12/10.1063/1.3525098
http://aip.metastore.ingenta.com/content/aip/journal/pop/17/12/10.1063/1.3525098
View: Figures

Figures

Image of FIG. 1.
FIG. 1.

(a) Conceptual drawing of MEMS-integrated 0.22 THz sheet beam traveling wave tube (TWT) amplifier. (b) 3D schematics of high efficiency interaction rf-circuit with dimensional parameters of the structure.

Image of FIG. 2.
FIG. 2.

Linear growth rate (LHS: black) and saturated radiation power (RHS: gray) obtained from frequency sweep with particle-in-cell simulations.

Image of FIG. 3.
FIG. 3.

SEM photos of (a) UV-LIGA fabricated and (b) CNC nanomachined (bottom) circuits. (c) AFM-measured surface roughness.

Image of FIG. 4.
FIG. 4.

S-parameter graphs ( and ) of (a) UV-LIGA fabricated and (b) CNC nanomachined circuits.

Image of FIG. 5.
FIG. 5.

(a) SEM images of nano--doped W powder. (b) XRD pattern of nano--doped W powder.

Image of FIG. 6.
FIG. 6.

(a) SEM images of cathode emission surface. (b) Emission characteristics at different cathode temperatures.

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/content/aip/journal/pop/17/12/10.1063/1.3525098
2010-12-03
2014-04-20
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Investigation of terahertz sheet beam traveling wave tube amplifier with nanocomposite cathode
http://aip.metastore.ingenta.com/content/aip/journal/pop/17/12/10.1063/1.3525098
10.1063/1.3525098
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