Researcher Portfolio
Priv.-Doz. Dr. Crespo López-Urrutia, José Ramón
Division Prof. Dr. Thomas Pfeifer, MPI for Nuclear Physics, Max Planck Society
Researcher Profile
Position: Group leader (Division Prof. Dr. Thomas Pfeifer, MPI for Nuclear Physics, Max Planck Society)
Additional IDs: ORCID:
https://orcid.org/0000-0002-2937-8037
Researcher ID: https://pure.mpg.de/cone/persons/resource/persons30383
Research Fields: Highly-Charged Ions
Publications
(1 - 25 of 218)
: Rüffert, L.-A., Dijck, E. A., Timm, L., Crespo López Urrutia, J. R., & Mehlstäubler, T. E. (2024). Domain formation and structural stabilities in mixed-species Coulomb crystals induced by sympathetically cooled highly charged ions. Physical Review A, 110(6): 063110. doi:10.1103/PhysRevA.110.063110. [PubMan] : Heldt, T., Oelmann, J.-H., Guth, L., Lackmann, N., Pfeifer, T., & Crespo López-Urrutia, J. R. (2024). Velocity-map imaging with counter-propagating laser pulses. Optics Letters, 49(23), 6825-6828. doi:10.1364/OL.540612. [PubMan] : Heldt, T. V., Oelmann, J.-H., Guth, L., Lackmann, N., Matt, L., Pfeifer, T., & Crespo López-Urrutia, J. R. (2024). Nanometric probing with a femtosecond, intra-cavity standing wave. Nanophotonics, 13(25), 4639-4646. doi:10.1515/nanoph-2024-0332. [PubMan] : Chen, S., Spieß, L. J., Wilzewski, A., Wehrheim, M., Dietze, K., Vybornyi, I., Hammerer, K., Crespo López-Urrutia, J. R., & Schmidt, P. O. (2024). Identification of highly forbidden optical transitions in highly charged ions. Physical Review Applied, 22(5): 054059. doi:10.1103/PhysRevApplied.22.054059. [PubMan] : Grilo, F., Shah, C., Marques, J., Santos, J. P., Crespo López-Urrutia, J. R., & Amaro, P. (2024). Measurement of differential collisional excitation cross sections for the Kα emission of He-like oxygen. Physical Review A, 110(4): 042827. doi:10.1103/PhysRevA.110.042827. [PubMan] : Porsev, S. G., Cheung, C., Safronova, M. S., Bekker, H., Rehbehn, N.-H., Crespo López Urrutia, J. R., & Brewer, S. M. (2024). Pr10+ as a candidate for a high-accuracy optical clock for tests of fundamental physics. Physical Review A, 110(4): 042823. doi:10.1103/PhysRevA.110.042823. [PubMan] : Togawa, M., Richter, J., Shah, C., Botz, M., Nenninger, J., Danisch, J., Goes, J. J., Kühn, S., Amaro, P., Mohamed, A., Amano, Y., Orlando, S., Totani, R., de Simone, M., Fritzsche, S., Pfeifer, T., Coreno, M., Surzhykov, A., & Crespo López-Urrutia, J. R. (2024). Hanle Effect for Lifetime Determinations in the Soft X-Ray Regime. Physical Review Letters, 133(16): 163202. doi:10.1103/PhysRevLett.133.163202. [PubMan] : Togawa, M., Kühn, S., Shah, C., Zaytsev, V. A., Oreshkina, N. S., Buck, J., Bernitt, S., Steinbrügge, R., Seltmann, J., Hoesch, M., Keitel, C. H., Pfeifer, T., Leutenegger, M. A., & Crespo López-Urrutia, J. R. (2024). High-accuracy measurements of core-excited transitions in light Li-like ions. Physical Review A, 110(3): L030802. doi:10.1103/PhysRevA.110.L030802. [PubMan] : Grell, G. J., Leutenegger, M. A., Amaro, P., Crespo López-Urrutia, J. R., & Shah, C. (2024). Laboratory Benchmark of n ≥ 4 Dielectronic Recombination Satellites of Fe XVII. The Astrophysical Journal, 971(1): 78. doi:10.3847/1538-4357/ad571d. [PubMan] : Shah, C., Togawa, M., Botz, M., Danisch, J., Goes, J. J., Bernitt, S., Maxton, M., Köbnick, K., Buck, J., Seltmann, J., Hoesch, M., Gu, M. F., Porter, F. S., Pfeifer, T., Leutenegger, M. A., Cheung, C., Safronova, M. S., & Crespo López-Urrutia, J. R. (2024). High-precision Transition Energy Measurements of Neon-like Fe XVII Ions. The Astrophysical Journal, 969 (1): 52. doi:10.3847/1538-4357/ad454b. [PubMan] : Shah, C., Kühn, S., Bernitt, S., Steinbrügge, R., Togawa, M., Berger, L., Buck, J., Hoesch, M., Seltmann, J., Kozlov, M. G., Porsev, S. G., Gu, M. F., Porter, F. S., Pfeifer, T., Leutenegger, M. A., Cheung, C., Safronova, M. S., & Crespo López-Urrutia, J. R. (2024). Natural-linewidth measurements of the 3C and 3D soft-x-ray transitions in Ni XIX. Physical Review A, 109(6): 063108. doi:10.1103/PhysRevA.109.063108. [PubMan] : Oelmann, J.-H., Guth, L., Heldt, T., Griesbach, N., Hector, R., Lackmann, N., Nauta, J., Pfeifer, T., & Crespo López-Urrutia, J. R. (2024). Closed-cycle noble gas recycling system for high-repetition rate high-harmonic generation. Review of Scientific Instruments, 95: 035115. doi:10.1063/5.0176563. [PubMan] : Rosner, M. K., Rehbehn, N.-H., & Crespo López-Urrutia, J. R. (2024). Experimental and theoretical Ritz–Rydberg analysis of the electronic structure of highly charged ions of lead and bismuth by optical spectroscopy. Journal of Physics B, 57 (5): 055001. doi:10.1088/1361-6455/ad285f. [PubMan] : Rehbehn, N.-H., Rosner, M. K., Berengut, J. C., Schmidt, P. O., Pfeifer, T., Gu, M. F., & Crespo López-Urrutia, J. R. (2023). Narrow and Ultranarrow Transitions in Highly Charged Xe Ions as Probes of Fifth Forces. Physical Review Letters, 131(16): 161803. doi:10.1103/PhysRevLett.131.161803. [PubMan] : 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. (2023). Stringent test of QED with hydrogen-like tin. Nature, 622, 53-57. doi:10.1038/s41586-023-06453-2. [PubMan] : Dijck, E. A., Warnecke, C., Wehrheim, M., Henninger, R. B., Eff, J., Georgiou, K., Graf, A., Kokh, S., Kozhiparambil Sajith, L. P., Mayo, C., Schäfer, V. M., Volk, C., Schmidt, P. O., Pfeifer, T., & Crespo López-Urrutia, J. R. (2023). Sympathetically cooled highly charged ions in a radio-frequency trap with superconducting magnetic shielding. Review of Scientific Instruments, 94(8): 083203. doi:10.1063/5.0160537. [PubMan] : Kühn, S., Cheung, C., Oreshkina, N. S., Steinbrügge, R., Togawa, M., Bernitt, S., Berger, L., Buck, J., Hoesch, M., Seltmann, J., Trinter, F., Keitel, C. H., Kozlov, M. G., Porsev, S. G., Gu, M. F., Porter, F. S., Pfeifer, T., Leutenegger, M. A., Harman, Z., Safronova, M. S., Crespo López-Urrutia, J. R., & Shah, C. (2022). New Measurement Resolves Key Astrophysical Fe XVII Oscillator Strength Problem. Physical Review Letters, 129(24): 245001. doi:10.1103/PhysRevLett.129.245001. [PubMan] : Steinbrügge, R., Kühn, S., Nicastro, F., Gu, M. F., Togawa, M., Hoesch, M., Seltmann, J., Sergeev, I., Trinter, F., Bernitt, S., Shah, C., Leutenegger, M. A., & Crespo López-Urrutia, J. R. (2022). X-Ray Photoabsorption of Density-sensitive Metastable States in Ne vii, Fe xxii, and Fe xxiii. The Astrophysical Journal, 941: 188. doi:10.3847/1538-4357/ac9c00. [PubMan] : King, S. A., Spieß, L. J., Micke, P., Wilzewski, A., Leopold, T., Benkle, E., Lange, R., Huntemann, N., Surzhykov, A., Yerokhin, V. A., Crespo López-Urrutia, J. R., & Schmidt, P. O. (2022). An optical atomic clock based on a highly charged ion. Nature, 611, 43-47. doi:10.1038/s41586-022-05245-4. [PubMan] : Barontini, G., Blackburn, L., Boyer, V., Butuc-Mayer, F., Calmet, X., Crespo Lopez-Urrutia, J. R., Curtis, E. A., Darquie, 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. (2022). Measuring the stability of fundamental constants with a network of clocks. EPJ Quantum Technology, 9(1): 12. doi:10.1140/epjqt/s40507-022-00130-5. [PubMan] : Stierhof, J., Kühn, S., Winter, M., Micke, P., Steinbrügge, R., Shah, C., Hell, N., Bissinger, M., Hirsch, M., Ballhausen, R., Lang, M., Gräfe, C., Wipf, S., Cumbee, R., Betancourt-Martinez, G. L., Park, S., Niskanen, J., Chung, M., Porter, F. S., Stöhlker, T., Pfeifer, T., Brown, G. V., Bernitt, S., Hansmann, P., Wilms, J., Crespo López-Urrutia, J. R., & Leutenegger, M. A. (2022). A new benchmark of soft X-ray transition energies of Ne, CO2, and SF6: paving a pathway towards ppm accuracy. The European Physical Journal D: Atomic, Molecular and Optical Physics, 76: 38. doi:10.1140/epjd/s10053-022-00355-0. [PubMan] : Hoesch, M., Seltmann, J., Trinter, F., Kühn, S., Togawa, M., Steinbrügge, R., Bernitt, S., & Crespo López-Urrutia, J. R. (2022). Highly Charged Ions for High-Resolution Soft X-ray Grating Monochromator Optimisation. Journal of Physics: Conference Series, 2380: 012086. doi:10.1088/1742-6596/2380/1/012086. [PubMan] : King, S. A., Spieß, L. J., Micke, P., Wilzewski, A., Leopold, T., Crespo López-Urrutia, J. R., & Schmidt, P. O. (2021). Algorithmic Ground-state Cooling of Weakly-Coupled Oscillators using Quantum Logic. Physical Review X, 11(4): 041049. doi:10.1103/PhysRevX.11.041049. [PubMan] : Stark, J., Warnecke, C., Bogen, S., Chen, S., Dijck, E., Kühn, S., Rosner, M., Graf, A., Nauta, J., Oelmann, J.-H., Schmöger, L., Schwarz, M., Liebert, D., Spieß, L. J., King, S. A., Leopold, T., Micke, P., Schmidt, P. O., Pfeifer, T., & Crespo Lopez-Urrutia, J. R. (2021). An ultralow-noise superconducting radio-frequency ion trap for frequency metrology with highly charged ions. Review of Scientific Instruments, 92: 083203. doi:10.1063/5.0046569. [PubMan] : Grilo, F., Shah, C., Kühn, S., Steinbrügge, R., Fujii, K., Marques, J., Gu, M. F., Santos, J. P., Crespo López-Urrutia, J. R., & Amaro, P. (2021). Comprehensive Laboratory Measurements Resolving the LMM Dielectronic Recombination Satellite Lines in Ne-like Fe XVII Ions. Astrophysical Journal, 913(2): 140. doi:10.3847/1538-4357/abf737. [PubMan]