Natural-linewidth measurements of the 3C and 3D soft-x-ray transitions in Ni XIX

Shah, Chintan; Kühn, Steffen; Bernitt, Sonja; Steinbrügge, René; Togawa, Moto; Berger, Lukas; Buck, Jens; Hoesch, Moritz; Seltmann, Jörn; Kozlov, Mikhail G.; Porsev, Sergey G.; Gu, Ming Feng; Porter, F. Scott; Pfeifer, Thomas; Leutenegger, Maurice A.; Cheung, Charles; Safronova, Marianna S.; Crespo López-Urrutia, José R.

doi:10.1103/PhysRevA.109.063108

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Natural-linewidth measurements of the 3C and 3D soft-x-ray transitions in Ni XIX

MPS-Authors

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Shah, Chintan
Division Prof. Dr. Thomas Pfeifer, MPI for Nuclear Physics, Max Planck Society;

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Kühn, Steffen
Division Prof. Dr. Thomas Pfeifer, MPI for Nuclear Physics, Max Planck Society;

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Bernitt, Sonja
Division Prof. Dr. Thomas Pfeifer, MPI for Nuclear Physics, Max Planck Society;

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Togawa, Moto
Division Prof. Dr. Thomas Pfeifer, MPI for Nuclear Physics, Max Planck Society;

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Berger, Lukas
Holger Kreckel - MPG group subsequent to ERC Starting Grant, Junior Research Groups, MPI for Nuclear Physics, Max Planck Society;

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Pfeifer, Thomas
Division Prof. Dr. Thomas Pfeifer, MPI for Nuclear Physics, Max Planck Society;

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Crespo López-Urrutia, José R.
Division Prof. Dr. Thomas Pfeifer, MPI for Nuclear Physics, Max Planck Society;

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https://journals.aps.org/pra/pdf/10.1103/PhysRevA.109.063108
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引用

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):. doi:10.1103/PhysRevA.109.063108.

引用: https://hdl.handle.net/21.11116/0000-000F-77C6-C

要旨

We used the monochromatic soft-x-ray beamline P04 at the synchrotron-radiation facility PETRA III to resonantly excite the strongest 2p-3d transitions in neonlike Ni XIX ions, [2p⁶ ]_J=0 → [(2p⁵ )_1/2 3d_3/2 ]_J=1 and [2p⁶ ]_J=0 → [(2p⁵ )_3/2 3d⁵/2 ]_J=1 , respectively dubbed 3C and 3D, achieving a resolving power of 15 000 and signal-to-background ratio of 30. We obtain their natural linewidths, with an accuracy of better than 10%, as well as the oscillator-strength ratio f (3C)/ f (3D) = 2.51(11) from analysis of the resonant fluorescence spectra. These results agree with those of previous experiments, earlier predictions, and our own advanced calculations.