Raman spectra of RE2O3 (RE=Eu, Gd, Dy, Ho, Er, Tm, Yb, Lu, Sc and Y): laser-excited luminescence and trace impurity analysis

2014 ◽  
Vol 32 (1) ◽  
pp. 1-4 ◽  
Author(s):  
Jinqiu YU ◽  
Lei CUI ◽  
Huaqiang HE ◽  
Shihong YAN ◽  
Yunsheng HU ◽  
...  
Keyword(s):  
Raman Spectra ◽  
Trace Impurity ◽  
Impurity Analysis ◽  
Excited Luminescence

Capillary Isotachophoresis/NMR:  Extension to Trace Impurity Analysis and Improved Instrumental Coupling

2002 ◽  
Vol 74 (10) ◽  
pp. 2306-2313 ◽  
Author(s):  
Andrew M. Wolters ◽  
Dimuthu A. Jayawickrama ◽  
Cynthia K. Larive ◽  
Jonathan V. Sweedler
Keyword(s):  
Trace Impurity ◽  
Capillary Isotachophoresis ◽  
Impurity Analysis

scholarly journals Forensic Discrimination of Lead-Tin Solder Based on the Trace Impurity Analysis by ICP-AES.

2003 ◽  
Vol 19 (3) ◽  
pp. 415-418 ◽  
Author(s):  
Yasuhiro SUZUKI ◽  
Masaaki KASAMATSU ◽  
Shinichi SUZUKI ◽  
Yoshiteru MARUMO
Keyword(s):  
Trace Impurity ◽  
Impurity Analysis

Oscillator rule of the trap activation energies in NaCl crystals

Open Physics ◽  
2003 ◽  
Vol 1 (2) ◽  
Author(s):  
Arseniy Gumenjuk ◽  
Sergiy Kutovyi
Keyword(s):  
Activation Energy ◽  
Charge Carrier ◽  
Raman Spectra ◽  
Activation Energies ◽  
Energy Spectra ◽  
Vibration Level ◽  
Luminescence Centre ◽  
Single Oscillator ◽  
Excited Luminescence ◽  
Trap Activation

AbstractThe energy spectra of traps in NaCl crystals have been studied in detail by the method of thermoluminescence. Crystals of NaCl were undoped but treated thermally in different ways. The activation energies of traps form a single oscillator series, E n=ℏωTL(n+1/2), ℏωTL=903 cm-1. Contrary to other previously studied crystals with complex lattices, the corresponding line ℏωRam=ℏωTL was not found in Raman spectra of NaCl. It is assumed that the oscillator rule is governed by the polaron nature of traps. The trap activation energy is determined by the vibration level from which the transition of the charge carrier to the excited luminescence centre is made possible and depends on the distance between these centres.

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