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Journal Article

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;

External Resource

https://journals.aps.org/pra/pdf/10.1103/PhysRevA.109.063108
(Publisher version)

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Citation

Shah, C., Kühn, S., Bernitt, S., Steinbrügge, R., Togawa, M., Berger, L., et al. (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.


Cite as: https://hdl.handle.net/21.11116/0000-000F-77C6-C
Abstract
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 3d3/2 ]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.