TY - JOUR
T1 - Absolute measurement of the relativistic magnetic dipole transition in He-like sulfur
AU - Machado, Jorge
AU - Paul, Nancy
AU - Soum-Sidikov, Gabrielle
AU - Duval, Louis
AU - Macé, Stéphane
AU - Loetzsch, Robert
AU - Trassinelli, Martino
AU - Indelicato, Paul
N1 - Funding Information:
We acknowledge support from the PESSOA Huber Curien Program 2022, No. 47863UE, and PAUILF Program No. 2017-C08. This research was funded in part by Fundação para a Ciência e Tecnologia (FCT; Portugal) through research center Grant No. UID/FIS/04559/2020 to LIBPhys-UNL from the FCT/MCTES/PIDDAC, Portugal. Laboratoire Kastler Brossel (LKB) is Unité Mixte de Recherche de Sorbonne Université, de ENS-PSL Research University, du Collège de France et du CNRS No. 8552. P.I. and N.P. are supported by the Allianz Program of the Helmholtz Association, Contract No. EMMI HA-216, “Extremes of Density and Temperature: Cosmic Matter in the Laboratory.” The SIMPA ECRIS has been financed by grants from CNRS, MESR, and University Pierre and Marie Curie (now Sorbonne Université). The DCS was constructed using grants from BNM 01 3 0002 and the ANR (Grant No. ANR-06-BLAN-0223). N.P. thanks the CNRS for support. L.D. thanks the Sorbonne University Institute Physics of Infinities and the research federation PLAS@PAR for his Ph.D. grant. We wish to thank Dr. M. Mendenhall for valuable discussions regarding the NIST code.
Publisher Copyright:
© 2023 American Physical Society.
PY - 2023/3
Y1 - 2023/3
N2 - We have made an absolute, reference-free measurement of the 1s2sS13→1s2S01 relativistic magnetic dipole transition in He-like sulfur. The highly charged sulfur ions were provided by an electron-cyclotron resonance ion source, and the x rays were analyzed with a high-precision double-crystal spectrometer. A transition energy of 2430.3685(97) eV was obtained and is compared to most advanced bound-state quantum electrodynamics calculations, providing an important test of two-electron QED effects and precision atomic structure methods in medium-Z species. Thanks to the extremely narrow natural linewidth of this transition and to the large dispersion of the spectrometer at this energy, a complementary study is also performed to evaluate the impact of different silicon crystal atomic form-factor models in the transition-energy analysis. We find no significant dependence on the model used to determine the transition energy.
AB - We have made an absolute, reference-free measurement of the 1s2sS13→1s2S01 relativistic magnetic dipole transition in He-like sulfur. The highly charged sulfur ions were provided by an electron-cyclotron resonance ion source, and the x rays were analyzed with a high-precision double-crystal spectrometer. A transition energy of 2430.3685(97) eV was obtained and is compared to most advanced bound-state quantum electrodynamics calculations, providing an important test of two-electron QED effects and precision atomic structure methods in medium-Z species. Thanks to the extremely narrow natural linewidth of this transition and to the large dispersion of the spectrometer at this energy, a complementary study is also performed to evaluate the impact of different silicon crystal atomic form-factor models in the transition-energy analysis. We find no significant dependence on the model used to determine the transition energy.
UR - http://www.scopus.com/inward/record.url?scp=85151123660&partnerID=8YFLogxK
U2 - 10.1103/PhysRevA.107.032821
DO - 10.1103/PhysRevA.107.032821
M3 - Article
AN - SCOPUS:85151123660
SN - 2469-9926
VL - 107
JO - Physical Review A
JF - Physical Review A
IS - 3
M1 - 032821
ER -