Thermal Conductivity and Optical and Paramagnetic Absorption Spectra of Reactor Irradiated MgO Crystals

1984 ◽  
Vol 122 (1) ◽  
pp. 95-104 ◽  
Author(s):  
M. G. Abramishvili ◽  
V. I. Altukhov ◽  
T. L. Kalabegishvili ◽  
V. G. Kvachadze
Keyword(s):  
Thermal Conductivity ◽  
Absorption Spectra ◽  
Paramagnetic Absorption

The optical and paramagnetic absorption spectra of MgO:Mn single crystals irradiated in a reactor

2004 ◽  
Vol 159 (10) ◽  
pp. 543-550 ◽  
Author(s):  
M. Abramishvili ◽  
K. Garibashvili ◽  
A. Kurasbediani ◽  
V. Kvachadze ◽  
Z. Akhvlediani ◽  
...  
Keyword(s):  
Single Crystals ◽  
Absorption Spectra ◽  
Paramagnetic Absorption

Two novel silicon phases with direct band gaps

2016 ◽  
Vol 18 (18) ◽  
pp. 12905-12913 ◽  
Author(s):  
Qingyang Fan ◽  
Changchun Chai ◽  
Qun Wei ◽  
Yintang Yang
Keyword(s):  
Mechanical Properties ◽  
Thermal Conductivity ◽  
Density Function ◽  
Absorption Spectra ◽  
Structural Stability ◽  
Function Theory ◽  
Density Function Theory ◽  
Band Gaps ◽  
Direct Band ◽  
Optical And Mechanical Properties

Based on density function theory with the ultrasoft pseudopotential scheme, we have systematically studied the structural stability, absorption spectra, electronic, optical and mechanical properties and minimum thermal conductivity of two novel silicon phases, Cm-32 silicon and P21/m silicon.

Absorption Spectra and Low-Temperature Thermal Conductivity of Irradiated MgO Crystals with Impurity OH− Ions

1993 ◽  
Vol 175 (1) ◽  
pp. 77-84 ◽  
Author(s):  
M. G. Abramishvili ◽  
Z. G. Akhvlediani ◽  
T. L. Kalabegishvili ◽  
V. G. Kvachadze
Keyword(s):  
Thermal Conductivity ◽  
Low Temperature ◽  
Absorption Spectra

Ultraviolet Absorption of Refractory Elements by a Dual Laser Plasma Method

1988 ◽  
Vol 102 ◽  
pp. 243-246
Author(s):  
J.T. Costello ◽  
W.G. Lynam ◽  
P.K. Carroll
Keyword(s):  
Absorption Spectra ◽  
Laser Plasma ◽  
Optical Pulse ◽  
Ionic Species ◽  
Neutral Species ◽  
Plasma Method ◽  
Plasma Technique ◽  
Refractory Elements ◽  
Delay Times ◽  
Dual Laser

AbstractThe dual laser-produced plasma technique for the study of ionic absorption spectra has been developed by the use of two Q-switched ruby lasers to enable independent generation of the absorbing and back-lighting plasmas. Optical pulse handling is used in the coupling cicuits to enable reproducible pulse delays from 250 nsec. to 10 msec, to be achieved. At delay times > 700 nsec. spectra of essentially pure neutral species are observed. The technique is valuable, not only for obtaining the neutral spectra of highly refractory and/or corrosive materials but also for studying behaviour of ionic species as a function of time. Typical spectra are shown in Fig. 1.

XUV Absorption Spectra of Carbon Ions

1988 ◽  
Vol 102 ◽  
pp. 71-73
Author(s):  
E. Jannitti ◽  
P. Nicolosi ◽  
G. Tondello
Keyword(s):  
Absorption Spectra ◽  
Cross Section ◽  
Theoretical Calculations ◽  
Photoionization Cross Section ◽  
Carbon Ions

AbstractThe photoabsorption spectra of the carbon ions have been obtained by using two laser-produced plasmas. The photoionization cross-section of the CV has been absolutely measured and the value at threshold, σ=(4.7±0.5) × 10−19cm2, as well as its behaviour at higher energies agrees quite well with the theoretical calculations.

Surface enhancement of Raman and absorption spectra from cyanine dye D266 adsorbed on ZnO colloids

1996 ◽  
Vol 88 (1) ◽  
pp. 281-290 ◽  
Author(s):  
HAO WEN ◽  
TIANJING HE ◽  
CUNYI XU ◽  
JIAN ZUO ◽  
FAN-CHEN LIU
Keyword(s):  
Absorption Spectra ◽  
Cyanine Dye ◽  
Surface Enhancement ◽  
Zno Colloids
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