Absolute oscillator strengths of 5f-5f transitions of U4+ in ThBr4 and in hydrobromic acid solutions |
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Authors: | F. Auzel S. Hubert P. Delamoye |
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Affiliation: | CNET, 196, rue de Paris, 92220 Bagneux, France;Laboratoire de Radiochimie, Institut de Physique Nucléaire, B.P. No. 1, 91406 Orsay, France |
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Abstract: | Absolute oscillator strengths of 5f2 transitions of U4+ in ThBr4 and in hydrobromic acid solutions are found to be about 10-4 which is two orders of magnitude larger than those for 4f-4f transitions (lanthanide series) and one order of magnitude larger than 5f3 ones (U3+). Applicability of Judd's theory to 5f2 transitions is discussed with particular attention to the roles played by reduced matrix elements of odd rank tensor Uλ and by the proximity of the 6d configuration. |
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