Optical Mass Spectrometry of Cold RaOH^{+} and RaOCH_{3}^{+}.

Autor: Fan M; Department of Physics, University of California, Santa Barbara, California 93106, USA.; California Institute for Quantum Entanglement, Santa Barbara, California 93106, USA., Holliman CA; Department of Physics, University of California, Santa Barbara, California 93106, USA.; California Institute for Quantum Entanglement, Santa Barbara, California 93106, USA., Shi X; Department of Physics, University of California, Santa Barbara, California 93106, USA.; California Institute for Quantum Entanglement, Santa Barbara, California 93106, USA., Zhang H; CAS Key Laboratory of Quantum Information, University of Science and Technology of China, Hefei, 230026, China., Straus MW; Department of Physics, University of California, Santa Barbara, California 93106, USA.; California Institute for Quantum Entanglement, Santa Barbara, California 93106, USA., Li X; Key Laboratory for Physical Electronics and Devices of the Ministry of Education and Shaanxi Key Laboratory of Information Photonic Technique, Xi' an Jiaotong University, Xi' an 710049, China., Buechele SW; Department of Physics, University of California, Santa Barbara, California 93106, USA.; California Institute for Quantum Entanglement, Santa Barbara, California 93106, USA., Jayich AM; Department of Physics, University of California, Santa Barbara, California 93106, USA.; California Institute for Quantum Entanglement, Santa Barbara, California 93106, USA.
Jazyk: angličtina
Zdroj: Physical review letters [Phys Rev Lett] 2021 Jan 15; Vol. 126 (2), pp. 023002.
DOI: 10.1103/PhysRevLett.126.023002
Abstrakt: We present an all-optical mass spectrometry technique to identify trapped ions. The new method uses laser-cooled ions to determine the mass of a cotrapped dark ion with a sub-dalton resolution within a few seconds. We apply the method to identify the first controlled synthesis of cold, trapped RaOH^{+} and RaOCH_{3}^{+}. These molecules are promising for their sensitivity to time and parity violations that could constrain sources of new physics beyond the standard model. The nondestructive nature of the mass spectrometry technique may help identify molecular ions or highly charged ions prior to optical spectroscopy. Unlike previous mass spectrometry techniques for small ion crystals that rely on scanning, the method uses a Fourier transform that is inherently broadband and comparatively fast. The technique's speed provides new opportunities for studying state-resolved chemical reactions in ion traps.
Databáze: MEDLINE