Zobrazeno 1 - 10
of 217
pro vyhledávání: '"Karpuk S"'
Autor:
Nörtershäuser, W., Surzhykov, A., Sánchez, R., Botermann, B., Gwinner, G., Huber, G., Karpuk, S., Kühl, T., Novotny, C., Reinhardt, S., Saathoff, G., Stöhlker, T., Wolf, A.
Publikováno v:
Phys. Rev. Accel. Beams 24, 024701 (2021)
We report on laser spectroscopic measurements on Li$^+$ ions in the experimental storage ring ESR at the GSI Helmholtz Centre for Heavy Ion Research. Driving the $2s\,^3\!{S}_1\;(F=\frac{3}{2}) \,\leftrightarrow\,2p\,^3\!P_2\;(F=\frac{5}{2}) \leftrig
Externí odkaz:
http://arxiv.org/abs/2011.04435
Autor:
Allmendinger, F., Engin, I., Heil, W., Karpuk, S., Krause, H. -J., Niederländer, B., Offenhäusser, A., Repetto, M., Schmidt, U., Zimmer, S.
Publikováno v:
Phys. Rev. A 100, 022505 (2019)
We report on a new measurement of the CP-violating permanent Electric Dipole Moment (EDM) of the neutral $^{129}$Xe atom. Our experimental approach is based on the detection of the free precession of co-located nuclear spin-polarized $^3$He and $^{12
Externí odkaz:
http://arxiv.org/abs/1904.12295
Autor:
Bison, G., Daum, M., Kirch, K., Lauss, B., Ries, D., Schmidt-Wellenburg, P., Zsigmond, G., Brenner, T., Geltenbort, P., Jenke, T., Zimmer, O., Beck, M., Heil, W., Kahlenberg, J., Karch, J., Ross, K., Eberhardt, K., Geppert, C., Karpuk, S., Reich, T., Siemensen, C., Sobolev, Y., Trautmann, N.
Publikováno v:
Phys. Rev. C 95, 045503 (2017)
Ultracold neutrons (UCNs) are key for precision studies of fundamental parameters of the neutron and in searches for new CP violating processes or exotic interactions beyond the Standard Model of particle physics. The most prominent example is the se
Externí odkaz:
http://arxiv.org/abs/1610.08399
Autor:
Allmendinger, F., Blümler, P., Doll, M., Grasdijk, O., Heil, W., Jungmann, K., Karpuk, S., Krause, H. -J., Offenhäusser, A., Repetto, M., Schmidt, U., Sobolev, Yu., Tullney, K., Willmann, L., Zimmer, S.
We report on precise measurements of magnetic field gradients extracted from transverse relaxation rates of precessing spin samples. The experimental approach is based on the free precession of gaseous, nuclear spin polarized $^3$He and $^{129}$Xe at
Externí odkaz:
http://arxiv.org/abs/1608.01830
Autor:
Nikiel, A., Blümler, P., Heil, W., Hehn, M., Karpuk, S., Maul, A., Otten, E., Schreiber, L. M., Terekhov, M.
We describe a 3He magnetometer capable to measure high magnetic fields (B > 0.1 Tesla) with a relative accuracy of better than 10^-12. Our approach is based on the measurement of the free induction decay of gaseous, nuclear spin polarized 3He followi
Externí odkaz:
http://arxiv.org/abs/1405.6853
Autor:
Allmendinger, F., Heil, W., Karpuk, S., Kilian, W., Scharth, A., Schmidt, U., Schnabel, A., Sobolev, Yu., Tullney, K.
Publikováno v:
Phys. Rev. Lett. 112, 110801 (2014)
We report on the search for a CPT and Lorentz invariance violating coupling of the 3He and 129Xe nuclear spins (each largely determined by a valence neutron) to background tensor fields which permeate the universe. Our experimental approach is to mea
Externí odkaz:
http://arxiv.org/abs/1312.3225
Autor:
Gwinner, G., Botermann, B., Geppert, C., Huber, G., Karpuk, S., Krieger, A., Nörtershäuser, W., Novotny, C., Kühl, T., Sanchez, R., Stöhlker, T., Bing, D., Schwalm, D., Wolf, A., Hänsch, T. W., Reinhardt, S., Saathoff, G.
We give a brief overview of time dilation tests using high-resolution laser spectroscopy at heavy-ion storage rings. We reflect on the various methods used to eliminate the first-order Doppler effect and on the pitfalls encountered, and comment on po
Externí odkaz:
http://arxiv.org/abs/1309.0549
Autor:
Schmidt, U., Allmendinger, F., Heil, W., Karpuk, S., Scharth, A., Sobolev, Y., Tullney, K., Zimmer, S.
The comparison of the free precession of co-located 3He-129Xe spins (clock comparison) enables us to search for very tiny nonmagnetic spin interactions. With our setup we could establish new limits for Lorentz invariance violating interactions of spi
Externí odkaz:
http://arxiv.org/abs/1307.5604
Autor:
Allmendinger, F., Schmidt, U., Heil, W., Karpuk, S., Scharth, A., Sobolev, Y., Tullney, K., Zimmer, S.
Our search for non-magnetic spin-dependent interactions is based on the measurement of free precession of nuclear spin polarized 3He and 129Xe atoms in a homogeneous magnetic guiding field of about 400 nT. We report on our approach to perform an adia
Externí odkaz:
http://arxiv.org/abs/1307.5165
Autor:
Saathoff, G., Reinhardt, S., Holzwarth, R., Hänsch, T. W., Udem, Th., Bing, D., Schwalm, D., Wolf, A., Karpuk, S., Huber, G., Novotny, C., Botermann, B., Geppert, C., Nörtershäuser, W., Kühl, T., Stöhlker, T., Gwinner, G.
Publikováno v:
Eur. Phys. J. C (2011) 71: 1596
In an article "Missing Transverse-Doppler Effect in Time-Dilation Experiments with High-Speed Ions" by S. Devasia [arXiv:1003.2970v1], our recent Doppler shift experiments on fast ion beams are reanalyzed. Contrary to our analysis, Devasia concludes
Externí odkaz:
http://arxiv.org/abs/1102.5657