TY - JOUR
T1 - Luminescence of uranyl ions in phosphate glass and phosphoric acid, spontaneous reduction to uranium(IV) and new description of the electron transfer bands
AU - Lieblich-sofer, Naomi
AU - Reisfeld, Renata
AU - Jørgensen, Christian K.
PY - 1978
Y1 - 1978
N2 - The absorption and emission spectra of the uranyl ion in phosphate glass and in 85 percent phosphoric acid are similar to the dilute aqueous solution, but the luminescence yield is far higher and small concentrations of uranium(IV) occur, possibly as a quasistationary equilibrium with free oxygen. The quantum numbers Ω of the excited states are discussed, based on "weak-field" coupling between 2F 1 2 and ω = 3 2 or 1 2 of πu. Detailed viriations of band positions are related to UO bond length modification, also in borate and germanate glasses. The excited uranyl ion may perform energy transfer to lanthanides, conceivably applicable to lasers.
AB - The absorption and emission spectra of the uranyl ion in phosphate glass and in 85 percent phosphoric acid are similar to the dilute aqueous solution, but the luminescence yield is far higher and small concentrations of uranium(IV) occur, possibly as a quasistationary equilibrium with free oxygen. The quantum numbers Ω of the excited states are discussed, based on "weak-field" coupling between 2F 1 2 and ω = 3 2 or 1 2 of πu. Detailed viriations of band positions are related to UO bond length modification, also in borate and germanate glasses. The excited uranyl ion may perform energy transfer to lanthanides, conceivably applicable to lasers.
UR - http://www.scopus.com/inward/record.url?scp=0004403162&partnerID=8YFLogxK
U2 - 10.1016/S0020-1693(00)89046-5
DO - 10.1016/S0020-1693(00)89046-5
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AN - SCOPUS:0004403162
SN - 0020-1693
VL - 30
SP - 259
EP - 265
JO - Inorganica Chimica Acta
JF - Inorganica Chimica Acta
IS - C
ER -