Journal Article

PUBDB-2026-03287

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Multiplet lines in seeded stimulated Mn K$α_1$ x-ray emission

Kroll, T. (Corresponding author) ; Doyle, M. ; Halavanau, A.Extern*XFEL.EU* ; Linker, T. M.Extern*XFEL.EU* ; Everts, J. ; Michine, Y.Extern*XFEL.EU* ; Fuller, F. D. ; Weninger, C.Extern* ; Alonso-Mori, R. ; Pellegrini, C. ; Benediktovitch, A.XFEL.EU*DESY* ; Yabashi, M. ; Inoue, I. ; Inubushi, Y. ; Osaka, T. ; Hara, T. ; Yamada, J. ; Kern, J. ; Yano, J. ; Yachandra, V. K. ; Rohringer, N.XFEL.EU*DESY* ; Yoneda, H. ; Bergmann, U. (Corresponding author)Extern*XFEL.EU*

2026
American Physical Society College Park, Md. [u.a.]

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Please use a persistent id in citations: doi:10.1103/b13n-djsx  doi:10.3204/PUBDB-2026-03287

Abstract: We report the successful resolution of the multiplet structure of $K\alpha_1$x-ray emission in manganese (Mn) complexes through seeded stimulated x-ray emission spectroscopy (seeded S-XES). Using a femtosecond pump pulse above the Mn $K$edge to generate simultaneous 1⁢𝑠core holes, and a second-color tunable seed pulse to initiate the stimulated emission process, we were able to enhance individual lines within the $K\alpha_1$emission. This approach allows to resolve the fine multiplet features that are obscured by lifetime broadening in conventional (spontaneous) Mn $K\alpha$XES. The work builds on our previous observation that S-XES from Mn(II) and Mn(VII) complexes pumped at high intensities can exhibit stimulated emission without sacrificing the chemical sensitivity to oxidation states. This technique opens the door to controlled high-resolution electronic structure spectroscopy in transition-metal complexes beyond the core-hole lifetime, with potential applications in catalysis, inorganic chemistry, and materials science.

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Contributing Institute(s):

1. Theoretical ultrafast X-ray science (FS-TUX)

Research Program(s):

1. 631 - Matter – Dynamics, Mechanisms and Control (POF4-631) (POF4-631)

Experiment(s):

1. Measurement at external facility

Appears in the scientific report 2026

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Database coverage:
; ; ; Clarivate Analytics Master Journal List ; Current Contents - Physical, Chemical and Earth Sciences ; Essential Science Indicators ; IF < 5 ; JCR ; SCOPUS ; Science Citation Index Expanded ; Web of Science Core Collection

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