On the Transition Rate of the Fe x Red Coronal Line

Brenner, G.; Crespo López-Urrutia, J. R.; Bernitt, S.; Fischer, D.; Ginzel, R.; Kubicek, K.; Mäckel, V.; Mokler, P. H.; Simon, M. C.; Ullrich, J.

doi:10.1088/0004-637X/703/1/68

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On the Transition Rate of the Fe x Red Coronal Line

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Brenner, G.
Division Prof. Dr. Joachim H. Ullrich, MPI for Nuclear Physics, Max Planck Society;

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Crespo López-Urrutia, J. R.
Division Prof. Dr. Joachim H. Ullrich, MPI for Nuclear Physics, Max Planck Society;

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Bernitt, S.
Division Prof. Dr. Joachim H. Ullrich, MPI for Nuclear Physics, Max Planck Society;

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Fischer, D.
Daniel Fischer - Emmy Noether Junior Research Group, Junior Research Groups, MPI for Nuclear Physics, Max Planck Society;

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Ginzel, R.
Division Prof. Dr. Joachim H. Ullrich, MPI for Nuclear Physics, Max Planck Society;

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Kubicek, K.
Division Prof. Dr. Joachim H. Ullrich, MPI for Nuclear Physics, Max Planck Society;

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Mäckel, V.
Division Prof. Dr. Joachim H. Ullrich, MPI for Nuclear Physics, Max Planck Society;

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Mokler, P. H.
Division Prof. Dr. Joachim H. Ullrich, MPI for Nuclear Physics, Max Planck Society;

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Simon, M. C.
Division Prof. Dr. Joachim H. Ullrich, MPI for Nuclear Physics, Max Planck Society;

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Ullrich, J.
Division Prof. Dr. Joachim H. Ullrich, MPI for Nuclear Physics, Max Planck Society;

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Citation

Brenner, G., Crespo López-Urrutia, J. R., Bernitt, S., Fischer, D., Ginzel, R., Kubicek, K., et al. (2009). On the Transition Rate of the Fe x Red Coronal Line. Astrophysical Journal, 703(1), 68-73. doi:10.1088/0004-637X/703/1/68.

Cite as: https://hdl.handle.net/11858/00-001M-0000-0011-7495-2

Abstract

We present a lifetime measurement of the 3s 23p 5 2 Po 1/2 first excited fine-structure level of the ground state configuration in chlorine-like Fe X, which relaxes to the ground state through a magnetic dipole (M1) transition (the so-called red coronal line) with a wavelength accurately determined to 637.454(1) nm. Moreover, the Zeeman splitting of line was observed. The lifetime of 14.2(2) ms is the most precise one measured in the red wavelength region and agrees well with advanced theoretical predictions and an empirically scaled interpolation based on experimental values from the same isoelectronic sequence.