EPR, optical absorption, MIR and Raman spectral studies on libethenite mineral

2006 ◽  
Vol 41 (4) ◽  
pp. 400-404 ◽  
Author(s):  
N. C. Gangi Reddy ◽  
R. Ramasubba Reddy ◽  
G. Siva Reddy ◽  
S. Lakshmi Reddy ◽  
B. Jagannatha Reddy
Keyword(s):  
Optical Absorption ◽  
Spectral Studies ◽  
Raman Spectral

scholarly journals Electron paramagnetic resonance, optical absorption and Raman spectral studies on a pyrite/chalcopyrite mineral

2012 ◽  
Vol 96 ◽  
pp. 310-315 ◽  
Author(s):  
G. Udayabhaskar Reddy ◽  
K. Seshamaheswaramma ◽  
Yoshinobu Nakamura ◽  
S. Lakshmi Reddy ◽  
Ray L. Frost ◽  
...  
Keyword(s):  
Electron Paramagnetic Resonance ◽  
Optical Absorption ◽  
Spectral Studies ◽  
Paramagnetic Resonance ◽  
Electron Paramagnetic ◽  
Raman Spectral

Optical absorption, EPR, infrared and Raman spectral studies of clinochlore mineral

2004 ◽  
Vol 65 (11) ◽  
pp. 1887-1893 ◽  
Author(s):  
N.O. Gopal ◽  
K.V. Narasimhulu ◽  
J. Lakshmana Rao
Keyword(s):  
Optical Absorption ◽  
Spectral Studies ◽  
Raman Spectral

Optical absorption and emission spectral studies of phthalocyanine molecules in DMF

2001 ◽  
Vol 05 (05) ◽  
pp. 456-459 ◽  
Author(s):  
G. A. KUMAR ◽  
J. THOMAS ◽  
N. V. UNNIKRISHNAN ◽  
V. P. N. NAMPOORI ◽  
C. P. G. VALLABHAN
Keyword(s):  
Optical Absorption ◽  
Cross Section ◽  
Emission Cross Section ◽  
Optical Gain ◽  
Spectral Studies ◽  
Dimethyl Formamide ◽  
Free Base ◽  
Dipole Strength ◽  
Spectral Parameters ◽  
Absorption And Emission

Optical absorption and emission spectral studies of various phthalocyanine ( Pc ) molecules in dimethyl formamide (DMF) solvent are reported in this paper. Measurements have been done for free base, Eu , Fe , Mn , Sm , Cu , Zn , Nd and La Pc - s . The principal optical transitions viz B and Q are identified and some of the important spectral parameters such as molar extinction coefficient (ε), absorption cross section (σa), dipole strength (q) and oscillator strength (f) are evaluated for the prominent Q-band. The measured radiative parameters viz emission cross section (σe), fluorescence bandwidth (Δλ) and optical gain (G) show wide variation among different systems. The results obtained are compared with other solid matrices such as glass and polymer.

OPTICAL ABSORPTION AND ESR SPECTRAL STUDIES ON COPPER-DOPED LEAD-CADMIUM GLASSES

2005 ◽  
Vol 19 (03) ◽  
pp. 119-128 ◽  
Author(s):  
M. PRASAD ◽  
M. CHANDRASEKHAR ◽  
V. CHANDRA MOULI
Keyword(s):  
Optical Absorption ◽  
Absorption Spectra ◽  
Room Temperature ◽  
Spectral Studies ◽  
Optical Absorption Spectra ◽  
Prepared Glass ◽  
Spin Resonance ◽  
Spectral Profiles ◽  
Hamiltonian Parameters ◽  
Ligand Bond

The electron spin resonance and optical absorption spectra of PbO-CdO glasses containing 1 mole% CuO have been investigated at room temperature. The optical absorption spectra of all glass samples have exhibited a broad asymmetric absorption band, which corresponds to a d–d transition of Cu 2+ ions. The prepared glass samples have been analyzed as a function of the photon energy. The results are interpreted based on the optical absorption spectral profiles and also the edge values upon the application of Davis and Mott's theory. From the ESR spectral features, the spin Hamiltonian parameters have been evaluated. The bonding coefficients were obtained, in order to elucidate the information on the Cu 2+ ligand bond nature.

Raman Spectral Studies of Oleums

1964 ◽  
Vol 40 (8) ◽  
pp. 2326-2341 ◽  
Author(s):  
George E. Walrafen
Keyword(s):  
Spectral Studies ◽  
Raman Spectral
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