All Stories

  1. Ab initio multiconfigurational calculations of experimentally significant energy levels and transition rates in Lr i (

    Article • Physical Review A, December 2025, American Physical Society (APS)

    Dr Jon Grumer

  2. Nebular Spectra of Kilonovae with Detailed Recombination Rates. I. Light r-process Composition

    Article • The Astrophysical Journal, October 2025, American Astronomical Society

    Dr Jon Grumer

  3. Actinide signatures in low electron fraction kilonova ejecta

    Article • Monthly Notices of the Royal Astronomical Society, December 2024, Oxford University Press (OUP)

    Dr Jon Grumer

  4. State-resolved mutual neutralization of O+16

    Article • Physical Review A, May 2024, American Physical Society (APS)

    Dr Jon Grumer

  5. Targeted optimization in small-scale atomic structure calculations: application to Au I

    Article • Journal of Physics B Atomic Molecular and Optical Physics, March 2024, Institute of Physics Publishing

    Dr Jon Grumer

  6. Observation of an isotope effect in state-selective mutual neutralization of lithium with hydrogen

    Article • Physical Review A, October 2023, American Physical Society (APS)

    Dr Jon Grumer

  7. NLTE spectra of kilonovae

    Article • Monthly Notices of the Royal Astronomical Society, October 2023, Oxford University Press (OUP)

    Dr Jon Grumer

  8. GRASP Manual for Users

    Article • Atoms, April 2023, MDPI AG

    Dr Jon Grumer

  9. Extended MCDHF Calculations of Energy Levels and Transition Data for N i

    Article • The Astrophysical Journal Supplement Series, March 2023, American Astronomical Society

    Dr Jon Grumer

  10. An Introduction to Relativistic Theory as Implemented in GRASP

    Article • Atoms, December 2022, MDPI AG

    Dr Jon Grumer

  11. Titanium abundances in late-type stars

    Article • EAS Publications Series, December 2022, EDP Sciences

    Dr Jon Grumer

  12. High-precision electron affinity of oxygen

    Article • Nature Communications, October 2022, Springer Science + Business Media

    Dr Jon Grumer

  13. Storage-ring study of the mutual neutralization of N+ with

    Article • Physical Review A, June 2022, American Physical Society (APS)

    Dr Jon Grumer

  14. NLTE effects on kilonova expansion opacities

    Article • Monthly Notices of the Royal Astronomical Society, May 2022, Oxford University Press (OUP)

    Dr Jon Grumer

  15. The GRASP atomic structure code - current status, the CompAS collaboration and hopes for the future

    Article • February 2022, Cassyni

    Dr Jon Grumer

  16. State-Resolved Mutual Neutralization of Mg+ and...

    Article • Physical Review Letters, January 2022, American Physical Society (APS)

    Dr Jon Grumer

  17. On the validity of steady-state for nebular phase kilonovae

    Article • Monthly Notices of the Royal Astronomical Society, December 2021, Oxford University Press (OUP)

    Dr Jon Grumer

  18. Experimental and theoretical studies of excited states in Ir−

    Article • Physical Review A, June 2021, American Physical Society (APS)

    Dr Jon Grumer

  19. Final-state-resolved mutual neutralization of Na ...

    Article • Physical Review A, March 2021, American Physical Society (APS)

    Dr Jon Grumer

  20. Mutual Neutralization in Li++H−/D− and Na++H−/D− Collisions: Implications of Experimental Results for Non-LTE Modeling of Stellar Spectra

    Article • The Astrophysical Journal, February 2021, American Astronomical Society

    Dr Jon Grumer

  21. Mutual neutralisation of O+ with O−: investigation of the role of metastable ions in a combined experimental and theoretical study

    Article • Physical Chemistry Chemical Physics, January 2021, Royal Society of Chemistry

    Dr Jon Grumer

  22. Carbon monoxide formation and cooling in supernovae

    Article • EAS Publications Series, October 2020, EDP Sciences

    Dr Jon Grumer

  23. Hfszeeman95—A program for computing weak and intermediate magnetic-field- and hyperfine-induced transition rates

    Article • Computer Physics Communications, August 2020, Elsevier

    Dr Jon Grumer

  24. Cryogenic merged-ion-beam experiments in DESIREE: Final-state-resolved mutual neutralization of Li+ and D−

    Article • July 2020, American Physical Society (APS)

    Dr Jon Grumer

  25. A First Spectroscopic Measurement of the Magnetic-field Strength for an Active Region of the Solar Corona

    Article • The Astrophysical Journal Letters, July 2020, American Astronomical Society

    Dr Jon Grumer

  26. Excitation and charge transfer in low-energy hydrogen atom collisions with neutral manganese and titanium

    Article • EAS Publications Series, May 2020, EDP Sciences

    Dr Jon Grumer

  27. The 3D non-LTE solar nitrogen abundance from atomic lines

    Article • EAS Publications Series, April 2020, EDP Sciences

    Dr Jon Grumer

  28. Resolving a discrepancy between experimental and theoretical lifetimes in atomic negative ions

    Article • Journal of Physics B Atomic Molecular and Optical Physics, December 2016, Institute of Physics Publishing

    Dr Jon Grumer

  29. ATOMIC-LEVEL PSEUDO-DEGENERACY OF ATOMIC LEVELS GIVING TRANSITIONS INDUCED BY MAGNETIC FIELDS, OF IMPORTANCE FOR DETERMINING THE FIELD STRENGTHS IN THE SOLAR CORONA

    Article • The Astrophysical Journal, August 2016, American Astronomical Society

    Dr Jon Grumer

  30. Energy levels and radiative data for Kr-like W38+from MCDHF and RMBPT calculations

    Article • Journal of Physics B Atomic Molecular and Optical Physics, June 2016, Institute of Physics Publishing

    Dr Jon Grumer

  31. Analysis of the competition between forbidden and hyperfine-induced transitions in Ne-like ions

    Article • March 2016, American Physical Society (APS)

    Dr Jon Grumer

  32. A NOVEL METHOD TO DETERMINE MAGNETIC FIELDS IN LOW-DENSITY PLASMA FACILITATED THROUGH ACCIDENTAL DEGENERACY OF QUANTUM STATES IN Fe9+

    Article • The Astrophysical Journal, July 2015, Institute of Physics Publishing

    Dr Jon Grumer

  33. HYPERFINE-DEPENDENT gf -VALUES OF Mn I LINES IN THE 1.49-1.80 μm H BAND

    Article • The Astrophysical Journal Supplement Series, December 2014, Institute of Physics Publishing

    Dr Jon Grumer

  34. Forbidden-line spectroscopy of the ground-state configuration of Cd-like W

    Article • Physical Review A, November 2014, American Physical Society (APS)

    Dr Jon Grumer

  35. Unexpected transitions induced by spin-dependent, hyperfine and external magnetic-field interactions

    Article • Physica Scripta, November 2014, Institute of Physics Publishing

    Dr Jon Grumer, Dr Martin Andersson

  36. The M1 ground state fine structure transition in Ag-like Yb

    Article • Journal of Physics B Atomic Molecular and Optical Physics, August 2014, Institute of Physics Publishing

    Dr Jon Grumer

  37. Coronal lines and the importance of deep-core–valence correlation in Ag-like ions

    Article • Physical Review A, June 2014, American Physical Society (APS)

    Dr Jon Grumer

  38. Magnetic field induced transition rates in Ne- and Be-like ions for plasma diagnostics and E1M1 two-photon decay rate determination

    Article • Journal of Physics Conference Series, April 2014, Institute of Physics Publishing

    Dr Jon Grumer

  39. Effect of an external magnetic field on the determination of E1M1 two-photon decay rates in Be-like ions

    Article • Physical Review A, August 2013, American Physical Society (APS)

    Professor Stefan Schippers, Dr Jon Grumer

  40. Theoretical investigation of magnetic-field-induced 2 p 5 3 s 3 P 0 , 2 – 2 p 6 1 S 0 transitions in Ne-like ions without nuclear spin

    Article • Physical Review A, July 2013, American Physical Society (APS)

    Dr Jon Grumer

  41. A spectral study of Te V from MCDHF calculations

    Article • Journal of Physics B Atomic Molecular and Optical Physics, April 2013, Institute of Physics Publishing

    Dr Jon Grumer

  42. Experimental and theoretical study of the ground-state M 1 transition in Ag-like tungsten

    Article • Physical Review A, December 2012, American Physical Society (APS)

    Dr Jon Grumer

  43. Hyperfine induced intensity redistribution in In \hbox{\sc II}

    Article • Journal of Physics B Atomic Molecular and Optical Physics, March 2010, Institute of Physics Publishing

    Dr Jon Grumer