Zobrazeno 1 - 10
of 1 844
pro vyhledávání: '"Walz, J"'
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
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:
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:
Schneider, A., Sikora, B., Dickopf, S., Müller, M., Oreshkina, N. S., Rischka, A., Valuev, I. A., Ulmer, S., Walz, J., Harman, Z., Keitel, C. H., Mooser, A., Blaum, K.
Helium-3 has nowadays become one of the most important candidates for studies in fundamental physics [1, 2, 3], nuclear and atomic structure [4, 5], magnetometry and metrology [6] as well as chemistry and medicine [7, 8]. In particular, $^3$He nuclea
Externí odkaz:
http://arxiv.org/abs/2206.05943
Autor:
Will, C., Bohman, M., Driscoll, T., Wiesinger, M., Abbass, F., Borchert, M. J., Devlin, J. A., Erlewein, S., Fleck, M., Latacz, B., Moller, R., Mooser, A., Popper, D., Wursten, E., Blaum, K., Matsuda, Y., Ospelkaus, C., Quint, W., Walz, J., Smorra, C., Ulmer, S.
Cooling of particles to mK-temperatures is essential for a variety of experiments with trapped charged particles. However, many species of interest lack suitable electronic transitions for direct laser cooling. We study theoretically the remote sympa
Externí odkaz:
http://arxiv.org/abs/2112.04818
Autor:
Bohman, M., Grunhofer, V., Smorra, C., Wiesinger, M., Will, C., Borchert, M. J., Devlin, J. A., Erlewein, S., Fleck, M., Gavranovic, S., Harrington, J., Latacz, B., Mooser, A., Popper, D., Wursten, E., Blaum, K., Matsuda, Y., Ospelkaus, C., Quint, W., Walz, J., Ulmer, S.
Publikováno v:
Nature, 596, 2021, 514-518
Efficient cooling of trapped charged particles is essential to many fundamental physics experiments, to high-precision metrology, and to quantum technology. Until now, sympathetic cooling has required close-range Coulomb interactions, but there has b
Externí odkaz:
http://arxiv.org/abs/2108.12725
Autor:
Leclercq, L., Bastide, C., Lechevallier, E., Walz, J., Charvet, A.-L., Gondran-Tellier, B., Campagna, J., Savoie, P.-Henri, Long-Depaquit, T., Daniel, L., Rossi, D., Pignot, G., Baboudjian, M.
Publikováno v:
In The French Journal of Urology March 2024 34(2)
Autor:
Smorra, C., Stadnik, Y. V., Blessing, P. E., Bohman, M., Borchert, M. J., Devlin, J. A., Erlewein, S., Harrington, J. A., Higuchi, T., Mooser, A., Schneider, G., Wiesinger, M., Wursten, E., Blaum, K., Matsuda, Y., Ospelkaus, C., Quint, W., Walz, J., Yamazaki, Y., Budker, D., Ulmer, S.
Publikováno v:
Nature 575, 310 (2019)
Astrophysical observations indicate that there is roughly five times more dark matter in the Universe than ordinary baryonic matter, with an even larger amount of the Universe's energy content due to dark energy. So far, the microscopic properties of
Externí odkaz:
http://arxiv.org/abs/2006.00255