Detection of metastable electronic states by Penning trap mass spectrometry
Schüssler, R X, Bekker, H, Braß, M, Cakir, H, Crespo López-Urrutia, J R, Door, M, Filianin, P, Harman, Z, Haverkort, M W, Huang, W J, Indelicato, P, Keitel, C H, König, C M, Kromer, K, Müller, M, Novikov, Y N, Rischka, A, Schweiger, C, Sturm, S, Ulmer, S, Eliseev, S, Blaum, K
Published in Nature (London) (01.05.2020)
Published in Nature (London) (01.05.2020)
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Measuring the stability of fundamental constants with a network of clocks
Barontini, G., Blackburn, L., Boyer, V., Butuc-Mayer, F., Calmet, X., Crespo López-Urrutia, J. R., Curtis, E. A., Darquié, B., Dunningham, J., Fitch, N. J., Forgan, E. M., Georgiou, K., Gill, P., Godun, R. M., Goldwin, J., Guarrera, V., Harwood, A. C., Hill, I. R., Hendricks, R. J., Jeong, M., Johnson, M. Y. H., Keller, M., Kozhiparambil Sajith, L. P., Kuipers, F., Margolis, H. S., Mayo, C., Newman, P., Parsons, A. O., Prokhorov, L., Robertson, B. I., Rodewald, J., Safronova, M. S., Sauer, B. E., Schioppo, M., Sherrill, N., Stadnik, Y. V., Szymaniec, K., Tarbutt, M. R., Thompson, R. C., Tofful, A., Tunesi, J., Vecchio, A., Wang, Y., Worm, S.
Published in EPJ quantum technology (01.12.2022)
Published in EPJ quantum technology (01.12.2022)
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Coherent laser spectroscopy of highly charged ions using quantum logic
Micke, P, Leopold, T, King, S A, Benkler, E, Spieß, L J, Schmöger, L, Schwarz, M, Crespo López-Urrutia, J R, Schmidt, P O
Published in Nature (London) (06.02.2020)
Published in Nature (London) (06.02.2020)
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Coulomb crystallization of highly charged ions
Schmöger, L., Versolato, O. O., Schwarz, M., Kohnen, M., Windberger, A., Piest, B., Feuchtenbeiner, S., Pedregosa-Gutierrez, J., Leopold, T., Micke, P., Hansen, A. K., Baumann, T. M., Drewsen, M., Ullrich, J., Schmidt, P. O., López-Urrutia, J. R. Crespo
Published in Science (American Association for the Advancement of Science) (13.03.2015)
Published in Science (American Association for the Advancement of Science) (13.03.2015)
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Identification of the predicted 5s-4f level crossing optical lines with applications to metrology and searches for the variation of fundamental constants
Windberger, A, Crespo López-Urrutia, J R, Bekker, H, Oreshkina, N S, Berengut, J C, Bock, V, Borschevsky, A, Dzuba, V A, Eliav, E, Harman, Z, Kaldor, U, Kaul, S, Safronova, U I, Flambaum, V V, Keitel, C H, Schmidt, P O, Ullrich, J, Versolato, O O
Published in Physical review letters (17.04.2015)
Published in Physical review letters (17.04.2015)
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In-trap spectroscopy of charge-bred radioactive ions
Lennarz, A, Grossheim, A, Leach, K G, Alanssari, M, Brunner, T, Chaudhuri, A, Chowdhury, U, Crespo López-Urrutia, J R, Gallant, A T, Holl, M, Kwiatkowski, A A, Lassen, J, Macdonald, T D, Schultz, B E, Seeraji, S, Simon, M C, Andreoiu, C, Dilling, J, Frekers, D
Published in Physical review letters (22.08.2014)
Published in Physical review letters (22.08.2014)
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Stringent test of QED with hydrogen-like tin
Morgner, J., Tu, B., König, C. M., Sailer, T., Heiße, F., Bekker, H., Sikora, B., Lyu, C., Yerokhin, V. A., Harman, Z., Crespo López-Urrutia, J. R., Keitel, C. H., Sturm, S., Blaum, K.
Published in Nature (London) (05.10.2023)
Published in Nature (London) (05.10.2023)
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Closed-cycle, low-vibration 4 K cryostat for ion traps and other applications
Micke, P., Stark, J., King, S. A., Leopold, T., Pfeifer, T., Schmöger, L., Schwarz, M., Spieß, L. J., Schmidt, P. O., Crespo López-Urrutia, J. R.
Published in Review of scientific instruments (01.06.2019)
Published in Review of scientific instruments (01.06.2019)
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The Heidelberg compact electron beam ion traps
Micke, P., Kühn, S., Buchauer, L., Harries, J. R., Bücking, T. M., Blaum, K., Cieluch, A., Egl, A., Hollain, D., Kraemer, S., Pfeifer, T., Schmidt, P. O., Schüssler, R. X., Schweiger, Ch, Stöhlker, T., Sturm, S., Wolf, R. N., Bernitt, S., Crespo López-Urrutia, J. R.
Published in Review of scientific instruments (01.06.2018)
Published in Review of scientific instruments (01.06.2018)
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A cryogenic radio-frequency ion trap for quantum logic spectroscopy of highly charged ions
Leopold, T., King, S. A., Micke, P., Bautista-Salvador, A., Heip, J. C., Ospelkaus, C., Crespo López-Urrutia, J. R., Schmidt, P. O.
Published in Review of scientific instruments (01.07.2019)
Published in Review of scientific instruments (01.07.2019)
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Detection of the 5p – 4f orbital crossing and its optical clock transition in Pr9
Bekker, H., Borschevsky, A., Harman, Z., Keitel, C. H., Pfeifer, T., Schmidt, P. O., Crespo López-Urrutia, J. R., Berengut, J. C.
Published in Nature communications (11.12.2019)
Published in Nature communications (11.12.2019)
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Photoelectron tomography with an intra-cavity velocity-map imaging spectrometer at 100 MHz repetition rate
Oelmann, J.-H., Heldt, T., Guth, L., Nauta, J., Lackmann, N., Wössner, V., Kokh, S., Pfeifer, T., López-Urrutia, J. R. Crespo
Published in Review of scientific instruments (01.12.2022)
Published in Review of scientific instruments (01.12.2022)
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Efficient rotational cooling of Coulomb-crystallized molecular ions by a helium buffer gas
Hansen, A K, Versolato, O O, Kłosowski, L, Kristensen, S B, Gingell, A, Schwarz, M, Windberger, A, Ullrich, J, López-Urrutia, J R Crespo, Drewsen, M
Published in Nature (London) (01.04.2014)
Published in Nature (London) (01.04.2014)
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Pit formation on poly(methyl methacrylate) due to ablation induced by individual slow highly charged ion impact
Ritter, R, Wilhelm, R. A, Ginzel, R, Kowarik, G, Heller, R, El-Said, A. S, Papaléo, R. M, Rupp, W, Crespo López-Urrutia, J. R, Ullrich, J, Facsko, S, Aumayr, F
Published in Europhysics letters (01.01.2012)
Published in Europhysics letters (01.01.2012)
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100 MHz frequency comb for low-intensity multi-photon studies: intra-cavity velocity-map imaging of xenon
Nauta, J, Oelmann, J-H, Ackermann, A, Knauer, P, Pappenberger, R, Borodin, A, Muhammad, I S, Ledwa, H, Pfeifer, T, Crespo López-Urrutia, J R
Published in Optics letters (15.04.2020)
Published in Optics letters (15.04.2020)
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Experimental Investigations of Ion Charge Distributions, Effective Electron Densities, and Electron-Ion Cloud Overlap in Electron Beam Ion Trap Plasma Using Extreme-Ultraviolet Spectroscopy
Liang, G. Y, Crespo López-Urrutia, J. R, Baumann, T. M, Epp, S. W, Gonchar, A, Lapierre, A, Mokler, P. H, Simon, M. C, Tawara, H, Mäckel, V, Yao, K, Zhao, G, Zou, Y, Ullrich, J
Published in The Astrophysical journal (10.09.2009)
Published in The Astrophysical journal (10.09.2009)
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Production of highly charged ions of rare species by laser-induced desorption inside an electron beam ion trap
Schweiger, Ch, König, C M, Crespo López-Urrutia, J R, Door, M, Dorrer, H, Düllmann, Ch E, Eliseev, S, Filianin, P, Huang, W, Kromer, K, Micke, P, Müller, M, Renisch, D, Rischka, A, Schüssler, R X, Blaum, K
Published in Review of scientific instruments (01.12.2019)
Published in Review of scientific instruments (01.12.2019)
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High precision wavelength measurements of QED-sensitive forbidden transitions in highly charged argon ions
Draganić, I, Crespo López-Urrutia, J R, DuBois, R, Fritzsche, S, Shabaev, V M, Orts, R Soria, Tupitsyn, I I, Zou, Y, Ullrich, J
Published in Physical review letters (31.10.2003)
Published in Physical review letters (31.10.2003)
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Photoionization of N3 + and Ar8 + in an electron beam ion trap by synchrotron radiation
Simon, M C, Schwarz, M, Epp, S W, Beilmann, C, Schmitt, B L, Harman, Z, Baumann, T M, Mokler, P H, Bernitt, S, Ginzel, R, Higgins, S G, Keitel, C H, Klawitter, R, Kubiček, K, Mäckel, V, Ullrich, J, López-Urrutia, J R Crespo
Published in Journal of physics. B, Atomic, molecular, and optical physics (28.03.2010)
Published in Journal of physics. B, Atomic, molecular, and optical physics (28.03.2010)
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