Search Results - "Crespo, R."

Highly charged ions: Optical clocks and applications in fundamental physics by Kozlov, M. G., Safronova, M. S., Crespo López-Urrutia, J. R., Schmidt, P. O.

“…Recent developments in frequency metrology and optical clocks have been based on electronic transitions in atoms and singly charged ions as references. The…”
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Atomic Physics Studies at the Gamma Factory at CERN by Budker, Dmitry, Crespo López‐Urrutia, José R., Derevianko, Andrei, Flambaum, Victor V., Krasny, Mieczyslaw Witold, Petrenko, Alexey, Pustelny, Szymon, Surzhykov, Andrey, Yerokhin, Vladimir A., Zolotorev, Max

“…The Gamma Factory initiative proposes to develop novel research tools at CERN by producing, accelerating, and storing highly relativistic, partially stripped…”
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Coherent laser spectroscopy of highly charged ions using quantum logic by Micke, P., Leopold, T., King, S. A., Benkler, E., Spieß, L. J., Schmöger, L., Schwarz, M., Crespo López-Urrutia, J. R., Schmidt, P. O.

“…Precision spectroscopy of atomic systems 1 is an invaluable tool for the study of fundamental interactions and symmetries 2 . Recently, highly charged ions…”
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Coulomb crystallization of highly charged ions by 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

“…Control over the motional degrees of freedom of atoms, ions, and molecules in a field-free environment enables unrivalled measurement accuracies but has yet to…”
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An optical atomic clock based on a highly charged ion by King, Steven A., Spieß, Lukas J., Micke, Peter, Wilzewski, Alexander, Leopold, Tobias, Benkler, Erik, Lange, Richard, Huntemann, Nils, Surzhykov, Andrey, Yerokhin, Vladimir A., Crespo López-Urrutia, José R., Schmidt, Piet O.

“…Optical atomic clocks are the most accurate measurement devices ever constructed and have found many applications in fundamental science and technology 1 – 3 …”
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High Resolution Photoexcitation Measurements Exacerbate the Long-Standing Fe XVII Oscillator Strength Problem by Kuehn, Steffen, Shah, Chintan, Lopez-Urrutia, Jose R Crespo, Fujii, Keisuke, Steinbruegge, Rene, Stierhof, Jakob, Togawa, Moto, Harman, Zoltan, Oreshkina, Natalia S, Cheung, Charles, Kozlov, Mikhail G, Porsev, Sergey G, Safronova, Marianna S, Berengut, Julian C, Rosner, Michael, Bissinger, Matthias, Ballhausen, Ralf, Hell, Natalie, Park, SungNam, Chung, Moses, Hoesch, Moritz, Seltmann, Joern, Surzhykov, Andrey S, Yerokhin, Vladimir A, Wilms, Joern, Porter, F Scott, Stoehlker, Thomas, Keitel, Christoph H, Pfeifer, Thomas, Brown, Gregory V, Leutenegger, Maurice A, Bernitt, Sven

“…For more than 40 years, most astrophysical observations and laboratory studies of two key soft x-ray diagnostic 2p - 3d transitions, 3C and 3D, in Fe XVII ions…”
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Effect of brooding conditions on the blood chemistry and performance of turkey poults by Crespo, R., Grimes, J.

“…Hematologic parameters and the levels of certain plasma metabolites offer an objective measure, and real-time insight into the physiological status of an…”
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Solving multi-criteria group decision making problems under environments with a high number of alternatives using fuzzy ontologies and multi-granular linguistic modelling methods by Morente-Molinera, J.A., Kou, G., González-Crespo, R., Corchado, J.M., Herrera-Viedma, E.

“…Classic multi-criteria group decision making models that have a high amount of alternatives are unmanageable for the experts. This is because they have to…”
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Flood protection ecosystem services in the coast of Puerto Rico: Associations between extreme weather, flood hazard mitigation and gastrointestinal illness by De Jesus Crespo, R., Wu, J., Myer, M., Yee, S., Fulford, R.

“…Floods are becoming increasingly influential in coastal cities due to the intensification of extreme weather events. The impacts of flooding go beyond damages…”
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Efficient rotational cooling of Coulomb-crystallized molecular ions by a helium buffer gas by Hansen, A. K., Versolato, O. O., Kłosowski, Ł., Kristensen, S. B., Gingell, A., Schwarz, M., Windberger, A., Ullrich, J., López-Urrutia, J. R. Crespo, Drewsen, M.

“…In combination with sympathetic cooling of translational degrees of freedom (leading to Coulomb crystallization), cooling of the rotational degrees of freedom…”
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Interplay of single-particle and collective modes in the 12C(p,2p) reaction near 100 MeV by Deltuva, A., Cravo, E., Crespo, R., Jurčiukonis, D.

“…The 12C(p,2p)11B reaction at Ep=98.7 MeV proton beam energy is analyzed using a rigorous three-particle scattering formalism extended to include the internal…”
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Dealing with group decision-making environments that have a high amount of alternatives using card-sorting techniques by Morente-Molinera, J.A., Ríos-Aguilar, S., González-Crespo, R., Herrera-Viedma, E.

“…•A novel group decision making method to reduce initial set of alternatives.•Alternatives are reduced using all expert’s considerations.•The desired number of…”
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An origami-inspired dynamically actuated binary switch by Masana, R., Khazaaleh, S., Alhussein, H., Crespo, R. S., Daqaq, M. F.

“…Origami, the ancient Japanese art of folding paper to create esthetic sculptures, has recently emerged in the scientific literature as an innovative means to…”
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Detection of metastable electronic states by Penning trap mass spectrometry by 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.

“…State-of-the-art optical clocks 1 achieve precisions of 10 −18 or better using ensembles of atoms in optical lattices 2 , 3 or individual ions in…”
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Narrow and Ultranarrow Transitions in Highly Charged Xe Ions as Probes of Fifth Forces by Rehbehn, Nils-Holger, Rosner, Michael K., Berengut, Julian C., Schmidt, Piet O., Pfeifer, Thomas, Gu, Ming Feng, López-Urrutia, José R. Crespo

“…Optical frequency metrology in atoms and ions can probe hypothetical fifth forces between electrons and neutrons by sensing minute perturbations of the…”
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Stringent test of QED with hydrogen-like tin by 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.

“…Inner-shell electrons naturally sense the electric field close to the nucleus, which can reach extreme values beyond 10 15  V cm −1 for the innermost electrons…”
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Laboratory Benchmark of n ≥ 4 Dielectronic Recombination Satellites of Fe xvii by Grell, Gabriel J., Leutenegger, Maurice A., Amaro, Pedro, Crespo López-Urrutia, José R., Shah, Chintan

“…Abstract We calculated cross sections for the dielectronic recombination (DR) satellite lines of Fe xvii and benchmarked our predictions with experimental…”
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Evolving demographics: a dynamic clustering approach to analyze residential segregation in Berlin by Masías H., Víctor H., Stier, Julia, Navarro R., Pilar, Valle, Mauricio A., Laengle, Sigifredo, Vargas, Augusto A., Crespo R., Fernando A.

“…This paper examines the phenomenon of residential segregation in Berlin over time using a dynamic clustering analysis approach. Previous research has examined…”
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Disentangling the impact of Atlantic Niño on sea-air CO2 flux by Koseki, Shunya, Tjiputra, Jerry, Fransner, Filippa, Crespo, Lander R., Keenlyside, Noel S.

“…Atlantic Niño is a major tropical interannual climate variability mode of the sea surface temperature (SST) that occurs during boreal summer and shares many…”
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LABORATORY MEASUREMENTS COMPELLINGLY SUPPORT A CHARGE-EXCHANGE MECHANISM FOR THE "DARK MATTER" ∼3.5 keV X-Ray LINE by Shah, Chintan, Dobrodey, Stepan, Bernitt, Sven, Steinbrügge, René, López-Urrutia, José R. Crespo, Gu, Liyi, Kaastra, Jelle

“…ABSTRACT The reported observations of an unidentified X-ray line feature at ∼3.5 keV have driven a lively discussion about its possible dark matter origin…”
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