Skip to content
DraconiticResearch
Search Sources API
203,234 studies31 sourcesUpdated 58 min ago
Peer-reviewedCC BY-NC-ND 4.0Communications Physics

Accessing the fundamental link between atomic populations and frequency distribution of spectral lines of ions in dense plasmas

  • F. P. Condamine
  • E. Galtier
  • O. Renner
  • D. Khaghani
  • L. Gournay
  • P. Vachal
  • E. Cunningham
  • G. Dyer
  • M. Greenberg
  • B. Nagler
  • H.-J. Lee
  • S. H. Glenzer
6 more authors
  • J. P. Marques
  • Paul Indelicato
  • A. V. Demura
  • V. S. Lisitsa
  • L. A. Vainshtein
  • F. B. Rosmej
Open at sourcePDFDOICite

Abstract

Dense plasmas enable to test our fundamental understanding of matter but a lack of data hindered searches of new physics in the past. A game changer is the new and unique Stanford-Linear-Accelerator-Center allowing X-ray line-shape-resolved resonance pumping via a combination of the self-seeded Linac-Coherent-Light-Source beam with an optical-laser produced dense plasma: Non-isolated atom models can now be benchmarked via the spectral distribution. High-precision spectroscopy reveals significant and simultaneous redistribution in population and frequency for transitions in He-like Vanadium. A critical principal quantum number is identified above which a strong intensity enhancement of higher lying Rydberg-lines appears although the corresponding ionic levels are not directly pumped. The Rydberg-lines themselves show significant distortions of their spectral distribution. We determine their frequency distributions with a precision of 0.2eV at 6.6keV and observe significant systematic deviations from available numerical methods. Our data question the current understanding how local thermodynamic equilibrium can be achieved. They also serve as a crucial benchmark for quantum theories in dense plasmas and may sparkle new theoretical developments, important for fundamental studies and applications in astrophysics and high-energy-density science.

Related

  1. Optically Derived Radio-Frequency Benchmark in Methanol: A Sub-kHz Reference for Astrophysical Tests of Fundamental Physics
    Frank Cozijn, Arthémise Altman, Alexandr Bogomolov +8
    OpticaPeer-reviewedPublisher termsFull text1 citedAtomic, molecular & optical physicsHAL
  2. Approaching the Fundamental Limit of Single-Shot Qubit Frequency Tracking with an Adiabatic Tangentially-Modulated Pulse
    Itamar Oren, Luke I. Dyer, Calum Holker +2
    arXivPreprintarXiv licenceFull textQuantum physics & quantum informationarXiv
  3. Determination of fundamental properties of nitrogen from first principles. III. Temperature and frequency dependence of the molecular polarizability and magnetic susceptibility
    Jakub Lang, Giovanni Garberoglio, Michał Przybytek +1
    arXivPreprintCC BY 4.0Full textPhysical chemistryCondensed matterarXiv
  4. Spectral taxonomy for quartic systems: fundamental clock, parity, and continuum
    Teepanis Chachiyo
    arXivPreprintarXiv licenceFull textApplied physics & instrumentationarXiv
  5. Compact and stable representation of real-frequency spectral functions for machine learning
    Xinyang Dong, Ido Zemach, Lei Zhang +2
    Physical Review ResearchPeer-reviewedCC BY 4.0Atomic, molecular & optical physicsCrossref

Cite

BibTeXRIS
BibTeX
@article{condamine2026accessing,
  title = {{Accessing the fundamental link between atomic populations and frequency distribution of spectral lines of ions in dense plasmas}},
  author = {F. P. Condamine and E. Galtier and O. Renner and D. Khaghani and L. Gournay and P. Vachal and E. Cunningham and G. Dyer and M. Greenberg and B. Nagler and H.-J. Lee and S. H. Glenzer and J. P. Marques and Paul Indelicato and A. V. Demura and V. S. Lisitsa and L. A. Vainshtein and F. B. Rosmej},
  journal = {Communications Physics},
  year = {2026},
  month = aug,
  doi = {10.1038/s42005-026-02798-y},
  url = {https://hal.science/hal-05747080v1},
  note = {CC BY-NC-ND 4.0},
}
RIS
TY  - JOUR
TI  - Accessing the fundamental link between atomic populations and frequency distribution of spectral lines of ions in dense plasmas
AU  - F. P. Condamine
AU  - E. Galtier
AU  - O. Renner
AU  - D. Khaghani
AU  - L. Gournay
AU  - P. Vachal
AU  - E. Cunningham
AU  - G. Dyer
AU  - M. Greenberg
AU  - B. Nagler
AU  - H.-J. Lee
AU  - S. H. Glenzer
AU  - J. P. Marques
AU  - Paul Indelicato
AU  - A. V. Demura
AU  - V. S. Lisitsa
AU  - L. A. Vainshtein
AU  - F. B. Rosmej
PY  - 2026
DA  - 2026/08/20
JO  - Communications Physics
DO  - 10.1038/s42005-026-02798-y
UR  - https://hal.science/hal-05747080v1
AB  - Dense plasmas enable to test our fundamental understanding of matter but a lack of data hindered searches of new physics in the past. A game changer is the new and unique Stanford-Linear-Accelerator-Center allowing X-ray line-shape-resolved resonance pumping via a combination of the self-seeded Linac-Coherent-Light-Source beam with an optical-laser produced dense plasma: Non-isolated atom models can now be benchmarked via the spectral distribution. High-precision spectroscopy reveals significant and simultaneous redistribution in population and frequency for transitions in He-like Vanadium. A critical principal quantum number is identified above which a strong intensity enhancement of higher lying Rydberg-lines appears although the corresponding ionic levels are not directly pumped. The Rydberg-lines themselves show significant distortions of their spectral distribution. We determine their frequency distributions with a precision of 0.2eV at 6.6keV and observe significant systematic deviations from available numerical methods. Our data question the current understanding how local thermodynamic equilibrium can be achieved. They also serve as a crucial benchmark for quantum theories in dense plasmas and may sparkle new theoretical developments, important for fundamental studies and applications in astrophysics and high-energy-density science.
SN  - 2399-3650
SN  - 2399-3650
ER  -