UWO Publications

UWO Publications 2016 - 2024
In reverse chronological order
  1. J.G. Tobin and M.F. Beaux, II, "Pu 5f Population: The Case for n = 5.0," Reports on Progress in Physics, submitted August 2024. 
  2. J.G. Tobin, "The Importance of Electron Scattering in the Analysis of Actinide X-Ray Spectroscopy, " MRS Advances (2025), Published online 18april2025,    doi: https://doi.org/10.1557/s43580-025-01254-3
  3. J.G. Tobin, H. Ramanantoanina, C. Daul, P. Roussel, S.-W. Yu, D. Sokaras and A. Kutepov, "Isolating Multiplet Structure in 5f Inverse Photoemission, " Solid State Sciences 160, 107779 (2025),  https://doi.org/10.1016/j.solidstatesciences.2024.107779 
  4. J. G. Tobin,  "Application of FEFF to the X-ray Spectroscopy of Cerium Dioxide," J. Vac. Sci. Technol. A 42, 063203 (2024), https://doi.org/10.1116/6.0003938, Wolfer Memorial Volume.
  5. J. G. Tobin, "A Reassessment of 5f Occupation in Plutonium," J. Electron Spect. Rel. Phen. 276, 147478 (2024), 10.1016/j.elspec.2024.147478,  Free preprint at [2408.14517] A Reassessment of 5f Occupation in Plutonium (arxiv.org). 
  6. J. G. Tobin, S.-W. Yu, and B.W. Chung,  "Quantifying the Resonant Photoemission of Radiation Damaged Pu," J. Vac. Sci. Technol. A 42, 053201 (2024), Wolfer Memorial Volume, https://doi.org/10.1116/6.0003764.

  7. J.G. Tobin, S.W. Yu and D. Sokaras, "The Insufficiency of the Charge Transfer Model for Resonant XES in UF4,"  MRS Advances (2024), https://doi.org/10.1557/s43580-024-00848-7.

  8. J. G. Tobin, S.-W. Yu, D.K. Shuh and S.M. Butorin,  "FEFF Analysis of Americium Oxides," J. Vac. Sci. Technol. A 42, 023209 (2024), https://doi.org/10.1116/6.0003428.

  9. A. L. Kutepov, J. G. Tobin, S.-W. Yu, B. W. Chung and P. Roussel, "New insights into the electronic structure of α-U and δ-Pu," J. of Phys.: Cond. Matter, 36, 045601 (2024), https://doi.org/10.1088/1361-648X/ad00f6.

  10. J. G. Tobin, H. Ramanantoanina, C. Daul, and S.-W. Yu, "Multi-electronic and multi-atomic effects in the U O4,5 X-ray Absorption Spectroscopy of Uranium Dioxide," J. Vac. Sci. Technol. A 41, 063208 (2023), https://doi.org/10.1116/6.0002969
  11. J. G. Tobin, "A quantitative evaluation of the 2nd derivative mode in electron energy loss spectroscopy," J. Electron Spectroscopy Rel. Phen. 268, 147387 (2023), https://doi.org/10.1016/j.elspec.2023.147387

  12. J. G. Tobin, S.-W. Yu, and B. Chung, Letter to the Editor, Comment on “Investigations on ion irradiation induced modifications in Th 5f occupancy in thoria,” by P. Jegadeesan, S. Amirthapandian, Gurpreet Kaur, D. Sanjay Kumar, Arindam Das, D.K. Avasthi, K. Ananthasivan, B.K. Panigrahi, Journal of Nuclear Materials 585, 154631 (2023), https://doi.org/10.1016/j.jnucmat.2023.154631.

  13. J. G. Tobin and S.-W. Yu, "Adapting FEFF to 5f Angular Momentum Coupling," J. Vac. Sci. Tech. A 41, 033201 (2023), https://doi.org/10.1116/6.0002420
  14. J. G. Tobin and S.-W. Yu, "Pu5f Occupation in Plutonium Dioxide," Inorganic Chemistry 62, 6, 2592–2598 (2023),     https://doi.org/10.1021/acs.inorgchem.2c03202
  15. J. G. Tobin, S. Nowak, S.-W. Yu, R. Alonso-Mori, T. Kroll, D. Nordlund, T.-C. Weng, D. Sokaras, "Extraction of Branching Ratios from HERFD Data," J. El. Sp. Rel. Ph. 262, 147285 (2023) https://www.sciencedirect.com/science/article/abs/pii/S0368204823000026
  16. J. G. Tobin, S. Nowak, S.-W. Yu, R. Alonso-Mori, T. Kroll, D. Nordlund, T.-C. Weng, D. Sokaras, "5f Covalency from X-Ray Resonant Raman Spectroscopy," J. Phys. Cond. Matter 34, 505601 (2022),  https://iopscience.iop.org/article/10.1088/1361-648X/ac9bbd.
  17. J. G. Tobin, S. Nowak, S.-W. Yu, R. Alonso-Mori, T. Kroll, D. Nordlund, T.-C. Weng, D. Sokaras, "Direct Measurement of 5f Delocalization with U XES," MRS Bulletin 47,  1078–1083 (2022), Invited Impact Article,  https://link.springer.com/article/10.1557/s43577-022-00419-x.
  18. J. G. Tobin, H. Ramanantoanina, C. Daul, S.-W. Yu, P. Roussel, S. Nowak, R. Alonso-Mori, T. Kroll, D. Nordlund, T.-C. Weng, D. Sokaras, "The Unoccupied Electronic Structure of Actinide Dioxides," Phys. Rev. B 105, 125129 (2022),  https://doi.org/10.1103/PhysRevB.105.125129
  19. J. G. Tobin, "An Empirical Analysis of alpha-U Bremsstrahlung Isochromat Spectroscopy," MRS Advances 7, 783-788 (2022), https://doi.org/10.1557/s43580-022-00296-1.
  20. J. G. Tobin, S. Nowak, S.-W. Yu, P. Roussel, R. Alonso-Mori, T. Kroll, D. Nordlund, T.-C. Weng, D. Sokaras, "The Thorium Model and Weak 5f Delocalization," J. Vac. Sci. Tech. A 40, 033205 (2022), https://doi.org/10.1116/6.0001754.
  21. J. G. Tobin, S. Nowak, S.-W. Yu, P. Roussel, R. Alonso-Mori, T. Kroll, D. Nordlund, T.-C. Weng, D. Sokaras, "Comment on The Underlying Simplicity of 5f Unoccupied Electronic Structure," J. Vac. Sci. Tech. A 39, 066001 (2021), https://doi.org/10.1116/6.0001315.
  22. J. G. Tobin, "Limitations in the Structural Determination of a Close-Packed Overlayer," J. Vac. Sci. Tech. A 39, 063203 (2021), https://doi.org/10.1116/6.0001320.
  23. J. G. Tobin, S. Nowak, S.-W. Yu, P. Roussel, R. Alonso-Mori, T. Kroll, D. Nordlund, T.-C. Weng, D. Sokaras, "The Underlying Simplicity of 5f Unoccupied Electronic Structure,"J. Vac. Sci. Tech. A 39, 043205 (2021), https://doi.org/10.1116/6.0001007.
  24. J. G. Tobin, S. Nowak, S.-W. Yu, R. Alonso-Mori, T. Kroll, D. Nordlund, T.-C. Weng, D. Sokaras, "The Limitations of 5f Delocalization and Dispersion,"Applied Sciences 11(9), 3882 (2021); https://doi.org/10.3390 /app11093882
  25. J. G. Tobin, S. Nowak, R. Alonso-Mori, T. Kroll, D. Nordlund, T.-C. Weng, D. Sokaras, "U M Subshell X-Ray Emission Spectroscopy of Uranium Dioxide: The Effect of Excitation Energy," MRS Advances 6, 209–212 (2021), https://doi.org/10.1557/s43580-021-00052-x.
  26. J. G. Tobin, S.-W. Yu, and D. Sokaras, "The X-Ray Emission of Cerium Oxide," J. El. Spect. Rel. Phen. 246, 147007 (2021), https://doi.org/10.1016/j.elspec.2020.147007.
  27. J. G. Tobin and D. Sokaras, "Quantifying the Application of FEFF to F-derived Spectral Structure, MRS Advances 5, 2631 (2020), https://doi.org/10.1557/adv.2020.280.
  28. J. G. Tobin, S. Nowak, S.-W. Yu, R. Alonso-Mori, T. Kroll, D. Nordlund, T.-C. Weng, D. Sokaras, "Towards the Quantification of 5f Delocalization," Applied Sciences 10, 2918 (2020), http://www.mdpi.com/2076-3417/10/8/2918, Erratum https://www.mdpi.com/2076-3417/10/12/4242.
  29. J. G. Tobin and D. Sokaras, "The Application of FEFF Analyses to Actinide 5f Systems," J. Vac. Sci. Tech. A 38, 036001 (2020), https://doi.org/10.1116/6.0000215.
  30. J. G. Tobin, S. Nowak, S.-W. Yu, R. Alonso-Mori, T. Kroll, D. Nordlund, T.-C. Weng, D. Sokaras, "EXAFS as a Probe of Actinide Oxide Formation in the Tender X-Ray Regime," Surface Science 698, 121607 (2020) https://doi.org/10.1016/j.susc.2020.121607.
  31. J. G. Tobin, S. Nowak, S.-W. Yu, R. Alonso-Mori, T. Kroll, D. Nordlund, T.-C. Weng, D. Sokaras, "Observation of 5f Intermediate Coupling in Uranium X-ray Emission Spectroscopy," J. Phys. Commun. 4, 015013(2020), https://doi.org/10.1088/2399-6528/ab6940.
  32. J. G. Tobin, S.-W. Yu, D.K. Shuh and D. Sokaras, "Probing U 5f Covalency in Uranium Compounds through Oxidant 2p Bonding," J. Phys. Soc. of Japan 89, 024711 (2020), https://journals.jps.jp/doi/10.7566 /JPSJ.89.024711
  33. J. G. Tobin, S. Nowak, C.H. Booth, E.D. Bauer, S.-W. Yu, R. Alonso-Mori, T. Kroll, D. Nordlund, T.-C. Weng, D.Sokaras, "Separate Measurement of the 5f5/2 and 5f7/2 Unoccupied Density of States of UO2," J. El. Spect. Rel. Phen. 232, 100 (2019).
  34. J. G. Tobin, "5f states with spin-orbit and crystal field splittings,” J. Vac. Sci. Technol. A 37, 031201 (2019).
  35. J. G. Tobin, S.-W. Yu, R. Qiao, W.L. Yang and D.K. Shuh, "Probing Covalency with Oxidant K Edge X-Ray Absorption Spectroscopy of UF4 and UO2,” J. Vac. Sci. Technol. A 36, 061403 (2018).
  36. J. G. Tobin, S.-W. Yu, R. Qiao, W.L. Yang and D.K. Shuh, "F1s X-Ray Emission Spectroscopy of UF4,” Prog. Nucl. Sci. Tech 5, 93 (2018).
  37. J. G. Tobin, "The Issue of Pu 5f Occupation," MRS Advances, 3, 3149–3154 (2018), https://doi.org/10.1557/adv.2018.372 ; Corrigendum, MRS Advances, 5 , Issue 51: Characterization and Theory , 2659 - 2660 (2020), https://doi.org/10.1557/adv.2020.88.
  38. J. G. Tobin, S.-W. Yu, R. Qiao, W.L. Yang and D.K. Shuh, "Oxidant K edge x-ray emission spectroscopy of UF4 and UO2,” J. Vac. Sci. Technol. A 36, 03E101 (2018).
  39. J. G. Tobin, A.M. Duffin, S.-W. Yu, R. Qiao, W.L. Yang, C. H. Booth and D.K. Shuh, "Surface Degradation of Uranium Tetrafluoride,” J. Vac. Sci. Technol. A 35, 03E108 (2017).
  40. P. Soderlind, A. Landa, J. G. Tobin, P. Allen, S. Medling, C.H. Booth, E.D. Bauer, J.C. Cooley, D. Sokaras, T.-C. Weng and D. Nordlung, "On the valence fluctuations in the early actinide metals," J. Electron Spectroscopy and Rel. Phen. 207, 14 (2016).
  41. C.H. Booth, S. Medling, J. G. Tobin, R.E. Raumbach, E.D. Bauer, D. Sokaras, D. Nordlung and T.-C. Weng, "Probing the f-state configuration of URu2Si2 with U LIII edge resonant x-ray absorption spectroscopy," Phys. Rev. B 94, 045121 (2016).