Search Results - "Gigl, T."

Defect imaging and detection of precipitates using a new scanning positron microbeam by Gigl, T, Beddrich, L, Dickmann, M, Rienäcker, B, Thalmayr, M, Vohburger, S, Hugenschmidt, C

“…We report on a newly developed scanning positron microbeam based on threefold moderation of positrons provided by the high intensity positron source NEPOMUC…”
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Characterisation of open volume defects in Fe–Cr and ODS Fe–Cr alloys after He+ and Fe+ ion irradiations by Šćepanović, M., de Castro, V., García-Cortés, I., Sánchez, F.J., Gigl, T., Hugenschmidt, C., Leguey, T.

“…Different ODS RAF steels with nominal composition Fe–14Cr–2W–0.3-Ti–0.3Y2O3 (wt%) and a model Fe–14Cr (wt%) alloy have been subjected to single Fe+ or He+ ion…”
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Detection and imaging of the oxygen deficiency in single crystalline YBa2Cu3O7− δ thin films using a scanning positron beam by Reiner, M., Gigl, T., Jany, R., Hammerl, G., Hugenschmidt, C.

“…Single crystalline YBa2Cu3O7−δ (YBCO) thin films were grown by pulsed laser deposition in order to probe the oxygen deficiency δ using a mono-energetic…”
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Characterization of ion-irradiated ODS Fe–Cr alloys by doppler broadening spectroscopy using a positron beam by Parente, P., Leguey, T., de Castro, V., Gigl, T., Reiner, M., Hugenschmidt, C., Pareja, R.

“…The damage profile of oxide dispersion strengthened steels after single-, or simultaneous triple-ion irradiation at different conditions has been characterized…”
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Interrelation between mechanical response, strain field, and local free volume evolution in glassy polymers: Seeking the atomistic origin of post-yield softening by Goodarzi Hosseinabadi, H., Bagheri, R., Gigl, T., Hugenschmidt, C., Raps, D., Altstaedt, V.

“…A set of complementary experiments are used for the first time to elucidate the interrelation between the mechanical properties, the strain field, and the free…”
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Quality of Heusler single crystals examined by depth-dependent positron annihilation techniques by Hugenschmidt, C., Bauer, A., Böni, P., Ceeh, H., Eijt, S. W. H., Gigl, T., Pfleiderer, C., Piochacz, C., Neubauer, A., Reiner, M., Schut, H., Weber, J.

“…Heusler compounds exhibit a wide range of different electronic ground states and are hence expected to be applicable as functional materials in novel…”
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Detection and imaging of the oxygen deficiency in single crystalline YBa{sub 2}Cu{sub 3}O{sub 7−δ} thin films using a scanning positron beam by Reiner, M., Gigl, T., Hugenschmidt, C., Jany, R., Hammerl, G.

“…Single crystalline YBa{sub 2}Cu{sub 3}O{sub 7−δ} (YBCO) thin films were grown by pulsed laser deposition in order to probe the oxygen deficiency δ using a…”
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Scatterer and virtual source detection for indoor UWB channels by Froehle, M., Meissner, P., Gigl, T., Witrisal, K.

“…We present an extension of an existing outdoor UWB scatterer detection algorithm [1], [2], making it usable for indoor scenarios. The algorithm is extended…”
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Experimental Characterization of System Parameters for Ranging in IEEE 802.15.4a using Energy Detectors by B. Geiger, T. Gigl, J. Preishuber-Pfluegl, K. Witrisal

“…The IEEE 802.15.4a standard for impulse radio ultrawide band (IR-UWB) communication systems defines a ranging scheme which relies on the measurement of the…”
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Impact of Oxygen Diffusion on Superconductivity in YBa$_2$Cu$_3$O$_{7-\delta}$ Thin Films Studied by Positron Annihilation Spectroscopy by Reiner, M, Gigl, T, Jany, R, Hammerl, G, Hugenschmidt, C

“…Phys. Rev. B 97, 144503 (2018) The oxygen deficiency $\delta$ in YBa$_2$Cu$_3$O$_{7-\delta}$ (YBCO) plays a crucial role for affecting high-temperature…”
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Ultra-Wideband Radio Pulse Shaping Filter Design for IEEE 802.15.4a Transmitter by Adalan, A., Fischer, M., Gigl, T., Witrisal, K., Scholtz, A.L., Mecklenbrauker, C.F.

“…In this contribution we design and analyze pulse shaping filters for use in IEEE 802.15.4a transmitters. They are developed and evaluated for channels 1-4 in…”
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Analysis of an indoor UWB channel for multipath-aided localization by Meissner, P., Arnitz, D., Gigl, T., Witrisal, K.

“…We present a detailed analysis of an indoor UWB channel measurement campaign. The focus is on the modeling of the deterministic part of the multipath channel…”
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Quality of Heusler Single Crystals Examined by Depth Dependent Positron Annihilation Techniques by Hugenschmidt, C, Bauer, A, Böni, P, Ceeh, H, Eijt, S W H, Gigl, T, Pfleiderer, C, Piochacz, C, Neubauer, A, Reiner, M, Schut, H, Weber, J

“…Heusler compounds exhibit a wide range of different electronic ground states and are hence expected to be applicable as functional materials in novel…”
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Analysis of a UWB Indoor Positioning System Based on Received Signal Strength by Gigl, T., Janssen, G.J.M., Dizdarevic, V., Witrisal, K., Irahhauten, Z.

“…This paper explores the possibility to design an indoor ultra wideband (UWB) ranging and positioning system using the received signal strength (RSS). Due to…”
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Enhanced-accuracy channel estimation and ranging for IR-UWB energy detectors by Geiger, B C, Gigl, T, Witrisal, K

“…The high temporal resolution of impulse radio ultra wideband (IR-UWB) communication systems makes these systems capable of obtaining high accuracies in ranging…”
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Wideband system-level simulator for passive UHF RFID by Arnitz, D., Muehlmann, U., Gigl, T., Witrisal, K.

“…A chip manufacturing process requires extensive support of CAD-tools in order to predict the behavior of the embedded circuitry and to ensure the intended…”
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Statistical analysis of a UWB energy detector for ranging in IEEE 802.15.4a by Gigl, T., Preishuber-Pfluegl, J., Witrisal, K.

“…The IEEE 802.15.4a standard for wireless sensor networks is designed for highly accurate ranging with impulse radio Ultra Wideband (UWB) signals. The standard…”
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A modular impulse radio ultra-wideband research & development platform for IEEE802.15.4a by Adalan, A., Gigl, T., Fischer, M., Witrisal, K.

“…In this paper we present a modular ultra-wideband research and development platform for IEEE 802.15.4a. Besides standard conform operation, this platform also…”
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Maximal operating distance estimation for ranging in IEEE 802.15.4a Ultra Wideband by Gigl, T, Troesch, F, Preishuber-Pfluegl, J, Witrisal, K

“…The IEEE 802.15.4a standard for wireless sensor networks is designed for highly accurate ranging with impulse radio Ultra Wideband (UWB) signals. The standard…”
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UWB channel characterization using IEEE 802.15.4a demonstrator system by Gigl, T., Buchgraber, T., Adalan, A., Preishuber-Pfluegl, J., Fischer, M., Witrisal, K.

“…In this contribution we present a modular IEEE 802.15.4a UWB demonstrator platform. The demonstrator supports a one-way communication link and allows for…”
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