Exciton model of the primary processes of bacterial photosynthesis: Spectra and kinetics of energy transfer

1995 ◽  
Vol 62 (2) ◽  
pp. 246-250
Author(s):  
V. I. Novoderezhkin ◽  
A. P. Razjivin
Keyword(s):  
Energy Transfer ◽  
Bacterial Photosynthesis ◽  
Exciton Model ◽  
Kinetics Of

scholarly journals Кинетика нарастания ап-конверсионной люминесценции кристалла LiY-=SUB=-0.8-=/SUB=-Yb-=SUB=-0.2-=/SUB=-F-=SUB=-4-=/SUB=- : Tm-=SUP=-3+-=/SUP=- (0.2 at.%) при импульсном возбуждении

2019 ◽  
Vol 61 (5) ◽  
pp. 953
Author(s):  
А.В. Михеев ◽  
Б.Н. Казаков
Keyword(s):  
Regression Analysis ◽  
Energy Transfer ◽  
Rare Earth ◽  
Laser Diode ◽  
Rare Earth Ions ◽  
Experimental Conditions ◽  
Pulsed Excitation ◽  
Transfer Processes ◽  
Dipole Interactions ◽  
Kinetics Of

AbstractThe regression analysis of the rise kinetics of up-conversion luminescence of the LiY_0.8Yb_0.2F_4:Tm^3+ (0.2 at %) crystal is performed. The kinetics curve is obtained with rectangular pulsed excitation by radiation from a laser diode (IR LD) with a wavelength of λ_ p = 933 nm. The most important—in these experimental conditions—mechanisms of the energy transfer from Yb^3+ ions to Tm^3+ ions are established, which are responsible for the transitions between the ground ^3 H _6 and excited ^3 F _4, ^3 H _4, ^1 G _4, ^1 D _2, and ^1 I _6 terms of the Tm^3+ ions. The durations of the relevant energy transfer processes are determined. It is shown that the energy transfer between rare earth ions in the LiY_0.8Yb_0.2F_4:Tm^3+ (0.2 at %) crystal occurs through the dipole–dipole interactions.

A study on up-conversion and energy transfer kinetics of KGdF4:Yb3+/Er3+ nanophosphors

2020 ◽  
Vol 1205 ◽  
pp. 127647 ◽  
Author(s):  
Aman Prasad ◽  
A.S. Rao ◽  
G. Vijaya Prakash
Keyword(s):  
Energy Transfer ◽  
Kinetics Of
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