By Topic

Site Solution Preference of \hbox {Bi}^{3+} in \hbox {RE}_{2}\hbox {O}_{3} Scintillators

Sign In

Cookies must be enabled to login.After enabling cookies , please use refresh or reload or ctrl+f5 on the browser for the login options.

Formats Non-Member Member
$31 $13
Learn how you can qualify for the best price for this item!
Become an IEEE Member or Subscribe to
IEEE Xplore for exclusive pricing!
close button

puzzle piece

IEEE membership options for an individual and IEEE Xplore subscriptions for an organization offer the most affordable access to essential journal articles, conference papers, standards, eBooks, and eLearning courses.

Learn more about:

IEEE membership

IEEE Xplore subscriptions

4 Author(s)
Stanek, C.R. ; Mater. Sci. & Technol. Div., Los Alamos Nat. Lab., Los Alamos, NM ; McClellan, K.J. ; Levy, M.R. ; Grimes, Robin W.

Atomic-scale simulations have been employed to predict the site solution preference of Bi3+ activator cations in a series of RE2O3 scintillators with the bixbyite crystal structure (Ialpha3), where RE denotes a 3+ cation ranging in size from Sc3+ to La3+ . There are two crystallographically unique cation sites in the bixbyite structure, in Wyckoff notation referred to as the 24d and 8b site. It is expected that the spectroscopic properties of an activator cation residing on the 24d site will be different from the same activator cation residing on the 8b site, due to the distinct symmetries (C2 and S6 respectively) of these two sites. Previous studies have revealed two different Bi3+ emissions in Y2O3 corresponding to Bi3+ cations occupying both lattice 24d and 8b sites. By predicting the energy difference of the Bi3+ solution on the 24d and 8b sites, we are able to predict the distribution of Bi3+ in a range of bixbyite compounds.

Published in:

Nuclear Science, IEEE Transactions on  (Volume:55 ,  Issue: 3 )