Zobrazeno 1 - 10
of 1 131
pro vyhledávání: '"Waldmann, T"'
Publikováno v:
Journal of Instrumentation 18 (2023) C06011
In this study we investigate the stability limits of Micromegas detectors upon irradiation with alpha particles. The results are obtained with meshes with different optical transparency and geometry of wires. The measurements are performed in Ar- and
Externí odkaz:
http://arxiv.org/abs/2306.07137
Autor:
Gasik, P., Lautner, L., Fabbietti, L., Fribert, H., Klemenz, T., Mathis, A., Ulukutlu, B., Waldmann, T.
Publikováno v:
Nuclear Inst. and Methods in Physics Research, A 1047 (2023) 167730
We present discharge probability studies performed with a single Thick Gas Electron Multiplier (THGEM) irradiated with alpha particles in Ar-CO$_2$ and Ne-CO$_2$ mixtures. We observe a clear dependency of the discharge stability on the noble gas and
Externí odkaz:
http://arxiv.org/abs/2204.02853
Autor:
Ulukutlu, B., Gasik, P., Waldmann, T., Fabbietti, L., Klemenz, T., Lautner, L., de Oliveira, R., Williams, S.
Publikováno v:
Nuclear Inst. and Methods in Physics Research, A 1019 (2021) 165829
In this work GEM and single-hole Thick GEM structures, composed of different coating materials, are studied. The used foils incorporate conductive layers made of copper, aluminium, molybdenum, stainless steel, tungsten and tantalum. The main focus of
Externí odkaz:
http://arxiv.org/abs/2104.12191
Autor:
Gasik, P., Lautner, L., Fabbietti, L., Fribert, H., Klemenz, T., Mathis, A., Ulukutlu, B., Waldmann, T.
Publikováno v:
In Nuclear Inst. and Methods in Physics Research, A February 2023 1047
Autor:
Verma, M., Balthasar, H., Denker, C., Böhm, F., Fischer, C. E., Kuckein, C., Manrique, S. J. González, Sobotka, M., González, N. Bello, Diercke, A., Berkefeld, T., Collados, M., Feller, A., Hofmann, A., Lagg, A., Nicklas, H., Suárez, D. Orozco, Yabar, A. Pastor, Rezaei, R., Schlichenmaier, R., Schmidt, D., Schmidt, W., Sigwarth, M., Solanki, S. K., Soltau, D., Staude, J., Strassmeier, K. G., Volkmer, R., von der Lühe, O., Waldmann, T.
The solar magnetic field is responsible for all aspects of solar activity. Sunspots are the main manifestation of the ensuing solar activity. Combining high-resolution and synoptic observations has the ambition to provide a comprehensive description
Externí odkaz:
http://arxiv.org/abs/1805.07752
Autor:
Manrique, S. J. González, Denker, C., Kuckein, C., Yabar, A. Pastor, Collados, M., Verma, M., Balthasar, H., Diercke, A., Fischer, C. E., Gömöry, P., González, N. Bello, Schlichenmaier, R., Armas, M. Cubas, Berkefeld, T., Feller, A., Hoch, S., Hofmann, A., Lagg, A., Nicklas, H., Suárez, D. Orozco, Schmidt, D., Schmidt, W., Sigwarth, M., Sobotka, M., Solanki, S. K., Soltau, D., Staude, J., Strassmeier, K. G., Volkmer, R., von der Lühe, O., Waldmann, T.
A new generation of solar instruments provides improved spectral, spatial, and temporal resolution, thus facilitating a better understanding of dynamic processes on the Sun. High-resolution observations often reveal multiple-component spectral line p
Externí odkaz:
http://arxiv.org/abs/1701.02206
Autor:
Felipe, T., Collados, M., Khomenko, E., Kuckein, C., Ramos, A. Asensio, Balthasar, H., Berkefeld, T., Denker, C., Feller, A., Franz, M., Hofmann, A., Kiess, C., Lagg, A., Nicklas, H., Suárez, D. Orozco, Yabar, A. Pastor, Rezaei, R., Schlichenmaier, R., Schmidt, D., Schmidt, W., Sigwarth, M., Sobotka, M., Solanki, S. K., Soltau, D., Staude, J., Strassmeier, K. G., Volkmer, R., von der Lühe, O., Waldmann, T.
Publikováno v:
A&A 596, A59 (2016)
Active regions are the most prominent manifestations of solar magnetic fields; their generation and dissipation are fundamental problems in solar physics. Light bridges are commonly present during sunspot decay, but a comprehensive picture of their r
Externí odkaz:
http://arxiv.org/abs/1611.04803
Autor:
Balthasar, H., Gömöry, P., Manrique, S. J. González, Kuckein, C., Kavka, J., Kučera, A., Schwartz, P., Vašková, R., Berkefeld, T., Vera, M. Collados, Denker, C., Feller, A., Hofmann, A., Lagg, A., Nicklas, H., Suárez, D. Orozco, Yabar, A. Pastor, Rezaei, R., Schlichenmaier, R., Schmidt, D., Schmidt, W., Sigwarth, M., Sobotka, M., Solanki, S. K., Soltau, D., Staude, J., Strassmeier, K. G., Volkmer, R., von der Lühe, O., Waldmann, T.
Arch filament systems occur in active sunspot groups, where a fibril structure connects areas of opposite magnetic polarity, in contrast to active region filaments that follow the polarity inversion line. We used the GREGOR Infrared Spectrograph (GRI
Externí odkaz:
http://arxiv.org/abs/1609.01514
Autor:
Joshi, J., Lagg, A., Solanki, S. K., Feller, A., Collados, M., Suárez, D. Orozco, Schlichenmaier, R., Franz, M., Balthasar, H., Denker, C., Berkefeld, T., Hofmann, A., Kiess, C., Nicklas, H., Yabar, A. Pastor, Rezaei, R., Schmidt, D., Schmidt, W., Sobotka, M., Soltau, D., Staude, J., Strassmeier, K. G., Volkmer, R., von der Lühe, O., Waldmann, T.
Publikováno v:
A&A 596, A8 (2016)
The fine-structure of magnetic field of a sunspot penumbra in the upper chromosphere is to be explored and compared to that in the photosphere. High spatial resolution spectropolarimetric observations were recorded with the 1.5-meter GREGOR telescope
Externí odkaz:
http://arxiv.org/abs/1608.01988
Autor:
Franz, M., Collados, M., Bethge, C., Schlichenmaier, R., Borrero, J. M., Schmidt, W., Lagg, A., Solanki, S. K., Berkefeld, T., Kiess, C., Rezaei, R., Schmidt, D., Sigwarth, M., Soltau, D., Volkmer, R., von der Luhe, O., Waldmann, T., Orozco, D., Yabar, A. Pastor, Denker, C., Balthasar, H., Staude, J., Hofmann, A., Strassmeier, K., Feller, A., Nicklas, H., Kneer, F., Sobotka, M.
Publikováno v:
A&A 596, A4 (2016)
Context. A significant part of the penumbral magnetic field returns below the surface in the very deep photosphere. For lines in the visible, a large portion of this return field can only be detected indirectly by studying its imprints on strongly as
Externí odkaz:
http://arxiv.org/abs/1608.00513