The Autoradioluminescence of Uranyl Salts. A new Luminescence Emission Standard for 500 - 600 nm
Document Type
Article
Publication Date
5-20-1990
Department
Department of Chemistry
Abstract
The autoradioluminescence (ARL) from uranyl ion (less than 0.2 M) arises exclusively via β emission from 238U daughters 234Th and 234Pa). Dilute aqueous solutions of uranyl nitrate freed from these daughters show no spontaneous light emission, but the steady state luminescence is exponentially re-established with the 24 day half-life of 234Th as originally described in the classic work of Rutherford and Soddy. However, concentrated solutions and solid uranyl nitrate also luminesce from α stimulation. The spectral distribution of the ARL from uranyl nitrate at λ > 400 nm in aqueous solution is identical to that of UO22+ fluorescence. The ARL of "aged" uranyl nitrate is linear in concentration (less than 0.2 M) in a number of solvents, and is invariant from preparations stored for several months. These solutions are useful for calibration of instruments where very low light levels are involved.
Publication Title
Journal of Photochemistry and Photobiology A: Chemistry
Recommended Citation
David Mendenhall, G.,
&
Hu, X.
(1990).
The Autoradioluminescence of Uranyl Salts. A new Luminescence Emission Standard for 500 - 600 nm.
Journal of Photochemistry and Photobiology A: Chemistry,
52(2), 285-302.
http://doi.org/10.1016/1010-6030(90)80007-K
Retrieved from: https://digitalcommons.mtu.edu/michigantech-p/5815
Publisher's Statement
© 1990