Zobrazeno 1 - 10
of 2 373
pro vyhledávání: '"A, Mooser"'
Autor:
Dickopf, Stefan, Sikora, Bastian, Kaiser, Annabelle, Müller, Marius, Ulmer, Stefan, Yerokhin, Vladimir A., Harman, Zoltán, Keitel, Christoph H., Mooser, Andreas, Blaum, Klaus
Publikováno v:
Nature 632, 757-761 (2024)
Many powerful tests of the Standard Model of particle physics and searches for new physics with precision atomic spectroscopy are plagued by our lack of knowledge of nuclear properties. Ideally, such properties may be derived from precise measurement
Externí odkaz:
http://arxiv.org/abs/2409.06306
Autor:
Latacz, B. M., Fleck, M., Jaeger, J. I., Umbrazunas, G., Arndt, B. P., Erlewein, S. R., Wursten, E. J., Devlin, J. A., Micke, P., Abbass, F., Schweitzer, D., Wiesinger, M., Will, C., Yildiz, H., Blaum, K., Matsuda, Y., Mooser, A., Ospelkaus, C., Soter, A., Quint, W., Walz, J., Yamazaki, Y., Smorra, C., Ulmer, S.
We demonstrate efficient sub-thermal cooling of the modified cyclotron mode of a single trapped antiproton and reach particle temperatures $T_+=E_+/k_\text{B}$ below $200\,$mK in preparation times shorter than $500\,$s. This corresponds to the fastes
Externí odkaz:
http://arxiv.org/abs/2404.07928
Autor:
Will, C., Wiesinger, M., Micke, P., Yildiz, H., Driscoll, T., Kommu, S., Abbass, F., Arndt, B. P., Bauer, B. B., Erlewein, S., Fleck, M., Jäger, J. I., Latacz, B. M., Mooser, A., Schweitzer, D., Umbrazunas, G., Wursten, E., Blaum, K., Devlin, J. A., Ospelkaus, C., Quint, W., Soter, A., Walz, J., Smorra, C., Ulmer, S.
We demonstrate a new temperature record for image-current mediated sympathetic cooling of a single proton in a cryogenic Penning trap by laser-cooled $^9$Be$^+$. An axial mode temperature of 170 mK is reached, which is a 15-fold improvement compared
Externí odkaz:
http://arxiv.org/abs/2310.10208
Autor:
Latacz, B. M., Arndt, B. P., Devlin, J. A., Erlewein, S. R., Fleck, M., Jäger, J. I., Micke, P., Umbrazunas, G., Wursten, E., Abbass, F., Schweitzer, D., Wiesinger, M., Will, C., Yildiz, H., Blaum, K., Matsuda, Y., Mooser, A., Ospelkaus, C., Smorra, C., Sótér, A., Quint, W., Walz, J., Yamazaki, Y., Ulmer, S.
We present the design and characterisation of a cryogenic window based on an ultra-thin aluminised PET foil at T < 10K, which can withstand a pressure difference larger than 1bar at a leak rate < $1\times 10^{-9}$ mbar$\cdot$ l/s. Its thickness of ap
Externí odkaz:
http://arxiv.org/abs/2308.12873
Trap-integrated fluorescence detection based on silicon photomultipliers in a cryogenic Penning trap
Autor:
Wiesinger, Markus, Stuhlmann, Florian, Bohman, Matthew A., Micke, Peter, Will, Christian, Yildiz, Hüseyin, Abbass, Fatma, Arndt, Bela P., Devlin, Jack A., Erlewein, Stefan, Fleck, Markus, Jäger, Julia I., Latacz, Barbara M., Schweitzer, Daniel, Umbrazunas, Gilbertas, Wursten, Elise, Blaum, Klaus, Matsuda, Yasuyuki, Mooser, Andreas, Quint, Wolfgang, Soter, Anna, Walz, Jochen, Smorra, Christian, Ulmer, Stefan
We present a fluorescence-detection system for laser-cooled 9Be+ ions based on silicon photomultipliers (SiPM) operated at 4 K and integrated into our cryogenic 1.9 T multi-Penning-trap system. Our approach enables fluorescence detection in a hermeti
Externí odkaz:
http://arxiv.org/abs/2308.02365
Autor:
Smorra, C., Abbass, F., Bohman, M., Dutheil, Y., Hobl, A., Popper, D., Arndt, B., Bauer, B. B., Devlin, J. A., Erlewein, S., Fleck, M., Jäger, J. I., Latacz, B. M., Micke, P., Schiffelholz, M., Umbrazunas, G., Wiesinger, M., Will, C., Wursten, E., Yildiz, H., Blaum, K., Matsuda, Y., Mooser, A., Ospelkaus, C., Quint, W., Soter, A., Walz, J., Yamazaki, Y., Ulmer, S.
Publikováno v:
Review of Scientific Instruments 94, 113201 (2023)
Currently, the only worldwide source of low-energy antiprotons is the AD/ELENA facility located at CERN. To date, all precision measurements on single antiprotons have been conducted at this facility and provide stringent tests of the fundamental int
Externí odkaz:
http://arxiv.org/abs/2304.09555
Autor:
Jennifer Klütsch, Christian Böffel, Lukas Abraham, Janina Mooser, Dominik Thüs, Parwana Tawanger, Sophia von Salm-Hoogstraeten, Sabine J. Schlittmeier
Publikováno v:
Scientific Reports, Vol 14, Iss 1, Pp 1-13 (2024)
Abstract With the rising usage of contactless work options since COVID-19, users increasingly share their personal data in digital tools at work. Using an experimental online vignette study (N = 93), we examined users’ willingness to use a video co
Externí odkaz:
https://doaj.org/article/734b4dcbccf0443f8e8e2c8fefe31ca7
Autor:
Wursten, E. J., Borchert, M. J., Devlin, J. A., Erlewein, S. R., Fleck, M., Harrington, J. A., Jäger, J. I., Latacz, B. M., Micke, P., Umbrazunas, G., Abbass, F., Bohman, M., Kommu, S., Popper, D., Wiesinger, M., Will, C., Yildiz, H., Blaum, K., Matsuda, Y., Mooser, A., Ospelkaus, C., Soter, A., Quint, W., Walz, J., Yamazaki, Y., Smorra, C., Ulmer, S.
The BASE collaboration at the Antiproton Decelerator facility of CERN compares the fundamental properties of protons and antiprotons using advanced Penning-trap systems. In previous measurement campaigns, we measured the magnetic moments of the proto
Externí odkaz:
http://arxiv.org/abs/2302.00492
Autor:
Lena Brandl, Stephanie Jansen-Kosterink, Jeannette Brodbeck, Sofia Jacinto, Bettina Mooser, Dirk Heylen
Publikováno v:
JMIR Formative Research, Vol 8, Pp e63262-e63262 (2024)
Abstract BackgroundArtificial intelligence (AI) tools hold much promise for mental health care by increasing the scalability and accessibility of care. However, current development and evaluation practices of AI tools limit their meaningfulness for
Externí odkaz:
https://doaj.org/article/524ca9d328db4a048132dd473760858c
Publikováno v:
Swiss Medical Weekly, Vol 154, Iss 10 (2024)
BACKGROUND: Low mobility of patients during hospitalisation is associated with adverse outcomes. To successfully change behaviours related to mobility of older hospitalised patients, we need to better understand the mechanisms underlying patient and
Externí odkaz:
https://doaj.org/article/1454df2f5e7349b5a1e8ea3da66ece96