Ground-state excitation of heavy highly-charged ions

A. Gumberidze; D. B. Thorn; C. J. Fontes; B. Najjari; H. L. Zhang; A. Surzhykov; A. Voitkiv; S. Fritzsche; D. Banas̈; H. Beyer; W. Chen; R. D. Dubois; S. Geyer; R. E. Grisenti; S. Hagmann; M. Hegewald; S. Hess; C. Kozhuharov; R. Mtin; N. Petridis; R. Reuschl; A. Simon; U. Spillmann; M. Trassinelli; S. Trotsenko; G. Weber; D. F.A. Winters; N. Winters; D. Yu; T. Stöhlker

doi:10.1088/0953-4075/48/14/144006

Ground-state excitation of heavy highly-charged ions

A. Gumberidze, D. B. Thorn, C. J. Fontes, B. Najjari, H. L. Zhang, A. Surzhykov, A. Voitkiv, S. Fritzsche, D. Banas̈, H. Beyer, W. Chen, R. D. Dubois, S. Geyer, R. E. Grisenti, S. Hagmann, M. Hegewald, S. Hess, C. Kozhuharov, R. Mtin, N. PetridisR. Reuschl, A. Simon, U. Spillmann, M. Trassinelli, S. Trotsenko, G. Weber, D. F.A. Winters, N. Winters, D. Yu, T. Stöhlker

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Abstract

We have studied the excitation of H-like and He-like uranium (U⁹¹⁺ and U⁹⁰⁺) in relativistic collisions with gaseous targets by observing the subsequent x-ray emission. The experiment was conducted at the ESR storage ring of the GSI accelerator facility in Darmstadt, Germany. The measurements were performed with a newly developed multi-phase target at different collision energies. This enabled us to explore the proton (nucleus) impact excitation as well as the electron impact excitation processes in the relativistic collisions. The large fine-structure splitting in uranium allowed us to unambiguously resolve excitation to different L-shell levels. Moreover, information about the population of different magnetic sublevels has been obtained via an angular differential study of the decay photons associated with the subsequent de-excitation process. The experimental results are compared with calculations performed within the relativistic framework including excitation mechanisms due to both protons (nucleus) and electrons.

Original language	English
Article number	144006
Journal	Journal of Physics B: Atomic, Molecular and Optical Physics
Volume	48
Issue number	14
DOIs	https://doi.org/10.1088/0953-4075/48/14/144006
State	Published - 28 Jul 2015
Externally published	Yes

ASJC Scopus subject areas

Atomic and Molecular Physics, and Optics
Condensed Matter Physics

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Gumberidze, A., Thorn, D. B., Fontes, C. J., Najjari, B., Zhang, H. L., Surzhykov, A., Voitkiv, A., Fritzsche, S., Banas̈, D., Beyer, H., Chen, W., Dubois, R. D., Geyer, S., Grisenti, R. E., Hagmann, S., Hegewald, M., Hess, S., Kozhuharov, C., Mtin, R., ... Stöhlker, T. (2015). Ground-state excitation of heavy highly-charged ions. Journal of Physics B: Atomic, Molecular and Optical Physics, 48(14), Article 144006. https://doi.org/10.1088/0953-4075/48/14/144006

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title = "Ground-state excitation of heavy highly-charged ions",

abstract = "We have studied the excitation of H-like and He-like uranium (U91+ and U90+) in relativistic collisions with gaseous targets by observing the subsequent x-ray emission. The experiment was conducted at the ESR storage ring of the GSI accelerator facility in Darmstadt, Germany. The measurements were performed with a newly developed multi-phase target at different collision energies. This enabled us to explore the proton (nucleus) impact excitation as well as the electron impact excitation processes in the relativistic collisions. The large fine-structure splitting in uranium allowed us to unambiguously resolve excitation to different L-shell levels. Moreover, information about the population of different magnetic sublevels has been obtained via an angular differential study of the decay photons associated with the subsequent de-excitation process. The experimental results are compared with calculations performed within the relativistic framework including excitation mechanisms due to both protons (nucleus) and electrons.",

author = "A. Gumberidze and Thorn, {D. B.} and Fontes, {C. J.} and B. Najjari and Zhang, {H. L.} and A. Surzhykov and A. Voitkiv and S. Fritzsche and D. Bana{\"s} and H. Beyer and W. Chen and Dubois, {R. D.} and S. Geyer and Grisenti, {R. E.} and S. Hagmann and M. Hegewald and S. Hess and C. Kozhuharov and R. Mtin and N. Petridis and R. Reuschl and A. Simon and U. Spillmann and M. Trassinelli and S. Trotsenko and G. Weber and Winters, {D. F.A.} and N. Winters and D. Yu and T. St{\"o}hlker",

note = "Publisher Copyright: {\textcopyright} 2015 IOP Publishing Ltd.",

year = "2015",

month = jul,

day = "28",

doi = "10.1088/0953-4075/48/14/144006",

language = "English",

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journal = "Journal of Physics B: Atomic, Molecular and Optical Physics",

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Gumberidze, A, Thorn, DB, Fontes, CJ, Najjari, B, Zhang, HL, Surzhykov, A, Voitkiv, A, Fritzsche, S, Banas̈, D, Beyer, H, Chen, W, Dubois, RD, Geyer, S, Grisenti, RE, Hagmann, S, Hegewald, M, Hess, S, Kozhuharov, C, Mtin, R, Petridis, N, Reuschl, R, Simon, A, Spillmann, U, Trassinelli, M, Trotsenko, S, Weber, G, Winters, DFA, Winters, N, Yu, D & Stöhlker, T 2015, 'Ground-state excitation of heavy highly-charged ions', Journal of Physics B: Atomic, Molecular and Optical Physics, vol. 48, no. 14, 144006. https://doi.org/10.1088/0953-4075/48/14/144006

TY - JOUR

T1 - Ground-state excitation of heavy highly-charged ions

AU - Gumberidze, A.

AU - Thorn, D. B.

AU - Fontes, C. J.

AU - Najjari, B.

AU - Zhang, H. L.

AU - Surzhykov, A.

AU - Voitkiv, A.

AU - Fritzsche, S.

AU - Banas̈, D.

AU - Beyer, H.

AU - Chen, W.

AU - Dubois, R. D.

AU - Geyer, S.

AU - Grisenti, R. E.

AU - Hagmann, S.

AU - Hegewald, M.

AU - Hess, S.

AU - Kozhuharov, C.

AU - Mtin, R.

AU - Petridis, N.

AU - Reuschl, R.

AU - Simon, A.

AU - Spillmann, U.

AU - Trassinelli, M.

AU - Trotsenko, S.

AU - Weber, G.

AU - Winters, D. F.A.

AU - Winters, N.

AU - Yu, D.

AU - Stöhlker, T.

PY - 2015/7/28

Y1 - 2015/7/28

N2 - We have studied the excitation of H-like and He-like uranium (U91+ and U90+) in relativistic collisions with gaseous targets by observing the subsequent x-ray emission. The experiment was conducted at the ESR storage ring of the GSI accelerator facility in Darmstadt, Germany. The measurements were performed with a newly developed multi-phase target at different collision energies. This enabled us to explore the proton (nucleus) impact excitation as well as the electron impact excitation processes in the relativistic collisions. The large fine-structure splitting in uranium allowed us to unambiguously resolve excitation to different L-shell levels. Moreover, information about the population of different magnetic sublevels has been obtained via an angular differential study of the decay photons associated with the subsequent de-excitation process. The experimental results are compared with calculations performed within the relativistic framework including excitation mechanisms due to both protons (nucleus) and electrons.

AB - We have studied the excitation of H-like and He-like uranium (U91+ and U90+) in relativistic collisions with gaseous targets by observing the subsequent x-ray emission. The experiment was conducted at the ESR storage ring of the GSI accelerator facility in Darmstadt, Germany. The measurements were performed with a newly developed multi-phase target at different collision energies. This enabled us to explore the proton (nucleus) impact excitation as well as the electron impact excitation processes in the relativistic collisions. The large fine-structure splitting in uranium allowed us to unambiguously resolve excitation to different L-shell levels. Moreover, information about the population of different magnetic sublevels has been obtained via an angular differential study of the decay photons associated with the subsequent de-excitation process. The experimental results are compared with calculations performed within the relativistic framework including excitation mechanisms due to both protons (nucleus) and electrons.

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U2 - 10.1088/0953-4075/48/14/144006

DO - 10.1088/0953-4075/48/14/144006

M3 - Article

AN - SCOPUS:84936762364

SN - 0953-4075

VL - 48

JO - Journal of Physics B: Atomic, Molecular and Optical Physics

JF - Journal of Physics B: Atomic, Molecular and Optical Physics

IS - 14

M1 - 144006

ER -

Ground-state excitation of heavy highly-charged ions

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