Investigation of Telstar 4 spacecraft Ku-band and C-band antenna components for multipactor breakdown

Rozario, N.; Lenzing, Harry; Reardon, Ken; Zarro, M.S.; Baran, C.G.

doi:10.1109/22.285060

Cited by 67 publications

(31 citation statements)

References 7 publications

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“…Among others, we can mention multipactor effects in space-borne RF devices [1], [2], multipactor in RF-vacuum windows [3], [4], multiplication processes in photomultipliers and multichannel plates [5], electron microscopy techniques [6], [7], charging effects on spacecraft surfaces [8], [9] and dust grain charging in space plasmas [10]. A detailed description of electron emission under electron bombardment should cover the energy and angular dependence of the different contributions to the electron emission yield (secondaries, elastically and inelastically backscattered electrons) and their spectral and angular distributions.…”

Section: Introductionmentioning

confidence: 99%

Secondary Electron Emission of Pt: Experimental Study and Comparison With Models in the Multipactor Energy Range

Bronchalo

Coves

Boria

et al. 2016

IEEE Trans. Electron Devices

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Abstract-Experimental data of secondary emission yield (SEY) and electron emission spectra of Pt under electron irradiation for normal incidence and primary energies lower than 1 keV are presented. Several relevant magnitudes, as total SEY, elastic backscattering probability, secondary emission spectrum (SES) and backscattering coefficient, are given for different primary energies. These magnitudes are compared with theoretical or semiempirical formulas commonly used in the related literature.

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Section: Introductionmentioning

confidence: 99%

Secondary Electron Emission of Pt: Experimental Study and Comparison With Models in the Multipactor Energy Range

Bronchalo

Coves

Boria

et al. 2016

IEEE Trans. Electron Devices

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“…Its amplitude is time varying and depends on the relative amplitudes and phases of the channel carriers. Therefore, in the multicarrier path of the spacecraft (after multiplexing the channels) extremely high peak power levels may be attained, thus increasing the risk of a multipactor discharge [11], [12].…”

Section: Introductionmentioning

confidence: 99%

Prediction of Multipactor Breakdown for Multicarrier Applications: The Quasi-Stationary Method

Anza

Vicente

Gil

et al. 2012

IEEE Trans. Microwave Theory Techn.

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“…En este trabajo se ha estudiado el efecto del bombardeo con iones de baja energía sobre películas delgadas de C 60 , para su aplicación como recubrimientos de baja emisión secundaria para prevenir el efecto multipactor en componentes de radiofrecuencia (RF) de alta potencia en satélites espaciales (1,2). El efecto multipactor es una descarga resonante de radiofrecuencia sostenida por la emisión de electrones secundarios (SEE) en los electrodos, las antenas de telecomunicación o las superficies de una cavidad resonante.…”

Section: Introductionunclassified

C<sub>60</sub> fullereno modificado por haces de iones de baja energía para prevenir el efecto multipactor

Montero¹,

Román²,

Ripalda³

et al. 2005

Bol. Soc. Esp. Ceram. Vidr.

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Se ha estudiado la interacción de los iones H Después del bombardeo iónico, la densidad de estados cerca del nivel de Fermi aumenta de forma apreciable, según se observa en los espectros de fotoemisión obtenidos usando radiación sincrotrón. El bombardeo iónico con una energía de tan sólo 50 eV y una fluencia de 4x10 14 ion/cm 2 es suficiente para modificar la simétrica estructura de caja del fullereno y obtener carbono amorfo grafítico. El nitrógeno y el oxígeno se implantan al bombardear con una energía de 50 eV, mientras que la implantación es despreciable en el caso del hidrógeno y argon. Las películas de fullereno poseen un coeficiente máximo de emisión secundaria inferior a 1.3 incluso después de su exposición al aire, el cual disminuye después del bombardeo con iones de N + y Ar + has been studied. After ion bombardment, the photoemission spectra obtained using synchrotron radiation show an increase of the density of states just bellow the Fermi level. Ion bombarment of C 60 with 50 eV energy and 4×10 14 ion/cm 2 fluence is sufficient to modify the cage structure of the fullerene and to obtain graphitic amorphous carbon. Upon bombarding with an energy of 50 eV, implantation of the nitrogen and the oxygen ions was observed, while implantation of the hydrogen and argon ions was small. The maximum secondary emission yield of C 60 thin films is lower than 1.3 even after air exposure. A significant improvement on the secondary emission properties can be obtained after bombardment by low-energy Ar + and N 2 + ion beams.

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Investigation of Telstar 4 spacecraft Ku-band and C-band antenna components for multipactor breakdown

Cited by 67 publications

References 7 publications

Secondary Electron Emission of Pt: Experimental Study and Comparison With Models in the Multipactor Energy Range

Secondary Electron Emission of Pt: Experimental Study and Comparison With Models in the Multipactor Energy Range

Prediction of Multipactor Breakdown for Multicarrier Applications: The Quasi-Stationary Method

C<sub>60</sub> fullereno modificado por haces de iones de baja energía para prevenir el efecto multipactor

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