13693-06-6Relevant academic research and scientific papers
Absorption spectrum of plutonium hexafluoride in the 3000-9000 Angstroem spectral region
Walters, R. T.,Briesmeister, R. A.
, p. 587 - 590 (1984)
The absorption spectrum of PuF6 is investigated using a long-pass multiple reflection cell.Cross sections over the spectral region of 3000-9000 Angstroem are reported.Due to the enhanced sensitivity of our apparatus the wavelengths and absorption cross sections are significantly improved over the previously available data.
Separation of plutonium and americium by low-temperature fluorination
Mills, T. R.,Reese, L. W.
, p. 360 - 362 (1994)
We have demonstrated separation of Pu and in-grown Am using the gaseous reagent dioxygen difluoride. Aged PuF4 was fluorinated at room temperature to generate PuF6 gas, which was trapped separately and reduced to PuF4. The reaction product contained very little Am. Unreacted solid had elevated concentrations of Am that were consistent with a material balance. Use of a gaseous reagent and product enabled remote handling during reaction and purification. This result demonstrated a simple and minimal waste alternative that may have application to a number of actinide purification problems.
Observation of rapid E-to-V energy transfer in the 2.3 μm laser-induced fluorescence of PuF6 containing HF
Rice, W. W.,Barefield, J. E.,Pack, R. T.
, p. 255 - 261 (1986)
Following excitation of PuFb at 800 nm, laser-induced fluorescence (LIF) of PuF6 is observed near 2.3 μm; HF v =1 to 0 emission, arising from near resonant electronic-to-vibrational (E->V) energy transfer, is also observed with the same temporal decay as
Absolute intensities of infrared-active fundamentals and combination bands of gaseous PuF6 and NpF6
Person, W. B.,Kim, K. C.,Campbell, G. M.,Dewey, H. J.
, p. 5524 - 5528 (1986)
Results are presented for the absolute integrated molar absorption coefhcients of the infrared-active fundamental and binary combination bands of PuF6 and of NpF6 between 1400 and 450 cm-1.The low resolution band contours of the combination bands ν1+ν3, ν2+ν3, ν3+ν5, ν2+ν6, and ν2+ν4 are discussed.From band center positions, the six harmonic wave numbers were obtained and Coriolis constant ζi (i = 3, 4, 5, and 6 ) estimated.For PuF6, the six normal mode vibrations appear to group into one local mode stretching at a mean value of 589+/-50 cm-1 and one local mode bending at 195+/-5 cm-1.The role of the heavy central atom and the magnitudes of the vibrational force constants are discussed in comparison with UF6.The measured intensity for ν3 is discussed in comparison with previously predicted values.
Formation of actinide hexafluorides at ambient temperatures with krypton difluoride
Asprey,Eller,Kinkead
, p. 670 - 672 (2008/10/08)
A second low-temperature agent, krypton difluoride, for generating volatile plutonium hexafluoride is reported (dioxygen difluoride is the only other reported agent). Plutonium hexafluoride is formed at ambient or lower temperature by the treatment of various solid substrates with krypton difluoride. Volatilization of uranium and neptunium from solid substrates using gaseous krypton difluoride is also reported for the first time. The formation of actinide hexafluorides has been confirmed for the reaction of krypton difluoride in anhydrous HF with UO2 and with uranium and neptunium fluorides at ambient temperatures. Treatment of americium dioxide with krypton difluoride did not yield americium hexafluoride under the conditions studied.
