Pulse Radiolysis−Optical Absorption Studies on the Triplet States ofp-Phenylenevinylene Oligomers in Solution

2000 ◽  
Vol 104 (35) ◽  
pp. 8366-8371 ◽  
Author(s):  
Luis P. Candeias ◽  
Jurjen Wildeman ◽  
Georges Hadziioannou ◽  
John M. Warman
Keyword(s):  
Optical Absorption ◽  
Pulse Radiolysis ◽  
Triplet States ◽  
Absorption Studies

Thermoluminescence and optical absorption studies of RbCl:Sr2+

1985 ◽  
Vol 10 (1-2) ◽  
pp. 93-96
Author(s):  
S.B.S. Sastry ◽  
S. Nagarajan ◽  
G. Muralidharan
Keyword(s):  
Optical Absorption ◽  
Absorption Studies

TL, EPR and Optical Absorption Studies on Natural Alexandrite Compared to Natural Chrysoberyl

2002 ◽  
Vol 100 (1) ◽  
pp. 471-474 ◽  
Author(s):  
G. M. Ferraz ◽  
S. Watanabe ◽  
S. O. Souza ◽  
R. M. F. Scalvi
Keyword(s):  
Optical Absorption ◽  
Absorption Studies

EPR and optical-absorption studies of Cu2+-doped Zn(NH2(CH2)3NHOH)2Ni(CN)4 single crystals

2006 ◽  
Vol 30 (1) ◽  
pp. 75-83 ◽  
Author(s):  
H. Paşaoĝlu ◽  
B. Karabulut ◽  
G. Kaştaş ◽  
R. Tapramaz ◽  
A. Karadaĝ
Keyword(s):  
Optical Absorption ◽  
Single Crystals ◽  
Absorption Studies

scholarly journals Pulse Radiolysis Studies of Collisional Deexcitation of Ne(3P1) by H2

2015 ◽  
Vol 19 (1) ◽  
pp. 75-78
Author(s):  
Deba Bahadur Khadka
Keyword(s):  
Optical Absorption ◽  
Absorption Spectroscopy ◽  
Cross Sections ◽  
Pulse Radiolysis ◽  
Science And Technology ◽  
Optical Absorption Spectroscopy ◽  
Time Resolved ◽  
Collisional Energy ◽  
The Mean ◽  
Collisional Deexcitation

The cross sections for the deexcitation of Ne(3P1) by H2 have been measured as a function of the mean collisional energy in the range of 17.3-37.9 meV or in the temperature range from 134 K to 293 K using a pulse radiolysis method as combined with time-resolved optical absorption spectroscopy. The deexcitation cross sections are in the range of 2.1- 5.6 Å2 for Ne(3P1) and nearly constant or increase slightly with increasing the collisional energy.Journal of Institute of Science and Technology, 2014, 19(1): 75-78

Étude par radiolyse pulsée des propriétés spectrales et cinétiques de l'électron solvaté dans l'hexane-1,2,6-triol liquide

1995 ◽  
Vol 73 (1) ◽  
pp. 117-122 ◽  
Author(s):  
J.-P. Jay-Gerin ◽  
J. Chevrel ◽  
C. Ferradini ◽  
E. Ray ◽  
M.H. Klapper ◽  
...  
Keyword(s):  
Absorption Spectrum ◽  
Optical Absorption ◽  
Linear Accelerator ◽  
Pulse Radiolysis ◽  
Order Reaction ◽  
Kinetic Properties ◽  
Solvated Electron ◽  
Solvent Viscosity ◽  
First Order ◽  
Short Times

The optical absorption spectrum of the solvated electron (es−) in liquid hexane-1,2,6-triol has been measured by nanosecond pulse radiolysis at different temperatures (10–40 °C) to investigate the influence of high solvent viscosity values on the spectral and kinetic properties of es−. The wavelength at the absorption maximum, λmax, is equal to 560 nm, and its variation with temperature, if it exists in the considered zone, is less than the experimental error. At 20 °C and 150 ns, the value of the product [Formula: see text] of the yield of es− and the molar extinction coefficient at λmax is 2.55 × 104 molecule/(M cm 100 eV). In the context of this work, we have compared results obtained with both a linear accelerator and a Febetron, a comparison that has allowed us to evaluate the influence of variations of the dose per pulse and to extend measurements to short times. In the case of experiments performed with the linear accelerator, es− is found to decay at all wavelengths by a first-order reaction (or by a pseudo-first-order reaction) with an activation energy of ~45 kJ mol−1. By contrast, kinetic curves obtained with the Febetron seem to show a competition in which a second-order law is followed at short times. The fact that the shape of the spectra seems to vary as a function of the dose per pulse indicates the possible intervention of another species whose formation is favored by the use of high radiation doses. In other respects, the kinetics of electron solvation does not seem to be controlled by the viscosity of the solvent in our experimental conditions. Keywords: liquid hexane-1,2,6-triol, pulse radiolysis, linear accelerator and Febetron, solvated electron, optical absorption spectrum, kinetic properties, solvent viscosity, dose and temperature effects.

EPR and Optical absorption studies of Na2O-Al2O3- B2O3-CuO glasses

2018 ◽  
Vol 5 (13) ◽  
pp. 26883-26888
Author(s):  
B. Ashok ◽  
G. Ramadevudu ◽  
M. Narasimha Chary ◽  
Md. Shareefuddin
Keyword(s):  
Optical Absorption ◽  
Absorption Studies
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