Evolution of Pu 4f7/2,5/2 spectra as a function of oxygen exposure in Langmuirs. X-ray induced satellites have been removed for clarity.
O 1s spectra (a), C 1s spectra (b) of sample after sputter cleaning. Bottom spectra were acquired using a pass energy of 37.75 eV, and top spectra were acquired using a pass energy of 178.95 eV.
Plutonium oxidation state concentration as a function of gas exposure.
Parabolic Pu3+ film thickness growth for as a function of gas exposure (a). (b) as (a) plotted with (Pu3+ film thickness) 2 with a linear regression fit highlighting the parabolic nature of Pu3+ film growth.
Reduction of Pu4+ to Pu3+ in UHV at 283 K. X-ray induced satellites have been removed for clarity (a). (b) The reaction profile of the data presented in (a).
Arrhenius plot and linear regression fit of the reduction of Pu4+ to Pu3+ in UHV.
Summary of Pu 4f7/2,5/2 peaks and satellites binding energies and corresponding oxidation states.
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