scholarly journals Effects of X-irradiation on the Principal Uranium Centre in Alkali Fluorides

1988 ◽  
Vol 41 (4) ◽  
pp. 611 ◽  
Author(s):  
WA Runciman ◽  
B Srinivasan

When fluorescing crystals of LiF and NaF containing hexavalent uranium and oxygen are X-irradiated the fluorescence is quenched and new absorption centres are created. There are strong absorption lines created at 562�8 nm in LiF: U, 0 and at 580�6 nm in N aF: U, O. These and other absorption lines have been studied by magnetic circular dichroism (MCD). A temperature independent MCD was observed, indicating an upper state degeneracy. A Fano antiresonance is observed in the absorption spectrum. No splitting was observed for the lines under uniaxial stress at 10 K. A model for these new centres is proposed.

1989 ◽  
Vol 93 (8) ◽  
pp. 2999-3011 ◽  
Author(s):  
Thomas C. Van Cott ◽  
Janna L. Rose ◽  
G. Christian Misener ◽  
Bryce E. Williamson ◽  
Andreas E. Schrimpf ◽  
...  

2020 ◽  
Vol 116 (20) ◽  
pp. 201905
Author(s):  
Biqiong Yu ◽  
Guichuan Yu ◽  
Jeff Walter ◽  
Vipul Chaturvedi ◽  
Joseph Gotchnik ◽  
...  

RSC Advances ◽  
2021 ◽  
Vol 11 (14) ◽  
pp. 8411-8419
Author(s):  
Jakub Kaminský ◽  
Valery Andrushchenko ◽  
Petr Bouř

Electronic absorption, natural and magnetic circular dichroism spectra of several nucleosides are simulated to understand their dependence on molecular dynamics and environment, their sensitivity to nucleoside pairing and stacking in nucleic acids.


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