All Stories

  1. 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

  2. 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

  3. 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

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

    Article • Astronomy and Astrophysics, May 2020, EDP Sciences

    Dr Jon Grumer

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

    Article • Astronomy and Astrophysics, April 2020, EDP Sciences

    Dr Jon Grumer

  6. 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

  7. 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

  8. 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

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

    Article • March 2016, American Physical Society (APS)

    Dr Jon Grumer

  10. 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

  11. 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

  12. 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

  13. 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

  14. 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

  15. 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

  16. 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

  17. 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

  18. 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

  19. 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

  20. 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

  21. 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