Zobrazeno 1 - 10
of 442
pro vyhledávání: '"VIEFHAUS, J."'
Autor:
Hartmann, G., Ilchen, M., Schmidt, Ph., Küstner-Wetekam, C., Ozga, C., Scholz, F., Buck, J., Trinter, F., Viefhaus, J., Ehresmann, A., Schöffler, M. S., Knie, A., Demekhin, Ph. V.
Publikováno v:
Phys. Rev. Lett. 123, 043202 (2019)
It is commonly accepted that the magnitude of a photoelectron circular dichroism (PECD) is governed by the ability of an outgoing photoelectron wave packet to probe the chiral asymmetry of a molecule. To be able to accumulate this characteristic asym
Externí odkaz:
http://arxiv.org/abs/1906.10550
Autor:
Müller, A., Lindroth, E., Bari, S., Borovik Jr., A., Hillenbrand, P. -M., Holste, K., Indelicato, P., Kilcoyne, A. L. D., Klumpp, S., Martins, M., Viefhaus, J., Wilhelm, P., Schippers, S.
Publikováno v:
Phys. Rev. A 98, 033416 (2018)
In a joint experimental and theoretical endeavour, photoionization of metastable C4+(1s 2s 3S1) ions via intermediate levels with hollow, double-K-vacancy configurations 2s2p, 2s3p, 2p3s, 2p3d, 2s4p, 2p4s and 2p4d has been investigated. High-resoluti
Externí odkaz:
http://arxiv.org/abs/1809.08455
Autor:
Müller, A., Borovik Jr., A., Buhr, T., Hellhund, J., Holste, K., Kilcoyne, A. L. D., Klumpp, S., Martins, M., Ricz, S., Viefhaus, J., Schippers, S.
Publikováno v:
Phys. Rev. A 97, 013409 (2018)
Single, double, and triple ionization of the C+ ion by a single photon have been investigated in the energy range 286 to 326 eV around the K-shell single-ionization threshold at an unprecedented level of detail. At energy resolutions as low as 12 meV
Externí odkaz:
http://arxiv.org/abs/1809.08452
Autor:
Grundmann, S., Trinter, F., Bray, A. W., Eckart, S., Rist, J., Kastirke, G., Metz, D., Klumpp, S., Viefhaus, J., Schmidt, L. Ph. H., Williams, J. B., Dörner, R., Jahnke, T., Schöffler, M. S., Kheifets, A. S.
Publikováno v:
Phys. Rev. Lett. 121, 173003 (2018)
We report on a kinematically complete measurement of double ionization of helium by a single 1100 eV circularly polarized photon. By exploiting dipole selection rules in the two-electron continuum state, we observed the angular emission pattern of el
Externí odkaz:
http://arxiv.org/abs/1803.10841
Autor:
Waitz, M., Bello, R. Y., Metz, D., Lower, J., Trinter, F., Schober, C., Keiling, M., Lenz, U., Pitzer, M., Mertens, K., Martins, M., Viefhaus, J., Klumpp, S., Weber, T., Schmidt, L. Ph. H., Williams, J. B., Schöffler, M. S., Serov, V. V., Kheifets, A. S., Argenti, L., Palacios, A., Martin, F., Jahnke, T., Dörner, R.
Publikováno v:
Nature Communications 8, Article number: 2266 (2017)
The toolbox for imaging molecules is well-equipped today. Some techniques visualize the geometrical structure, others the electron density or electron orbitals. Molecules are many-body systems for which the correlation between the constituents is dec
Externí odkaz:
http://arxiv.org/abs/1801.03746
Publikováno v:
In Nuclear Inst. and Methods in Physics Research, A 21 October 2021 1014
Autor:
Schippers, S., Beerwerth, R., Abrok, L., Bari, S., Buhr, T., Martins, M., Ricz, S., Viefhaus, J., Fritzsche, S., Müller, A.
Publikováno v:
Physical Review A 94 (2016) 041401
The photon-ion merged-beams technique was used at a synchrotron light source for measuring absolute cross sections of double and triple photodetachment of O$^{-}$ ions. The experimental photon energy range of 524-543 eV comprised the threshold for K-
Externí odkaz:
http://arxiv.org/abs/1609.05309
Autor:
Waitz, M., Metz, D., Lower, J., Schober, C., Keiling, M., Pitzer, M., Mertens, K., Martins, M., Viefhaus, J., Klumpp, S., Weber, T., Schmidt-Böcking, H., Schmidt, L. Ph. H., Morales, F., Miyabe, S., Rescigno, T. N., McCurdy, C. W., Martin, F., Williams, J. B., Schöffler, M. S., Jahnke, T., Dörner, R.
Publikováno v:
Phys. Rev. Lett. 117, 083002 (2016)
We investigate the photo-doubleionization of $H_2$ molecules with 400 eV photons. We find that the emitted electrons do not show any sign of two-center interference fringes in their angular emission distributions if considered separately. In contrast
Externí odkaz:
http://arxiv.org/abs/1607.07275
Autor:
Boll, R., Rouzee, A., Adolph, M., Anielski, D., Aquila, A., Bari, S., Bomme, C., Bostedt, C., Bozek, J. D., Chapman, H. N., Christensen, L., Coffee, R., Coppola, N., De, S., Decleva, P., Epp, S. W., Erk, B., Filsinger, F., Foucar, L., Gorkhover, T., Gumprecht, L., Hoemke, A., Holmegaard, L., Johnsson, P., Kienitz, J. S., Kierspel, T., Krasniqi, F., Kuehnel, K. -U., Maurer, J., Messerschmidt, M., Moshammer, R., Mueller, Nele L. M., Rudek, B., Savelyev, E., Schlichting, I., Schmidt, C., Scholz, F., Schorb, S., Schulz, J., Seltmann, J., Stener, M., Stern, S., Techert, S., Thogersen, J, Trippel, S., Viefhaus, J., Vrakking, M, Stapelfeldt, H., Kuepper, J., Ullrich, J., Rudenko, A., Rolles, D.
This paper gives an account of our progress towards performing femtosecond time-resolved photoelectron diffraction on gas-phase molecules in a pump-probe setup combining optical lasers and an X-ray Free-Electron Laser. We present results of two exper
Externí odkaz:
http://arxiv.org/abs/1407.7782
Autor:
Schippers, S., Ricz, S., Buhr, T., Borovik Jr., A., Hellhund, J., Holste, K., Huber, K., Schäfer, H. -J., Schury, D., Klumpp, S., Mertens, K., Martins, M., Flesch, R., Ulrich, G., Rühl, E., Jahnke, T., Lower, J., Metz, D., Schmidt, L. P. H., Schöffler, M., Williams, J. B., Glaser, L., Scholz, F., Seltmann, J., Viefhaus, J., Dorn, A., Wolf, A., Ullrich, J., Müller, A.
Publikováno v:
J. Phys. B. 47 (2014) 115602
The photon-ion merged-beams technique has been employed at the new Photon-Ion spectrometer at PETRA III (PIPE) for measuring multiple photoionization of Xe$^{q+}$ (q=1-5) ions. Total ionization cross sections have been obtained on an absolute scale f
Externí odkaz:
http://arxiv.org/abs/1404.3021