scholarly journals On the influence of metastable states and the behavior of the EEDF in the characterization of the negative glow of a N2-Ar discharge by OES

2014 ◽  
Vol 511 ◽  
pp. 012013
Author(s):  
L Isola ◽  
M López ◽  
B J Gómez ◽  
V Guerra
Keyword(s):  
Metastable States ◽  
Negative Glow

scholarly journals CAP-EOM-CCSD Method with Smooth Voronoi CAP for Metastable Electronic States in Molecular Clusters

2020 ◽  
Author(s):  
James Gayvert ◽  
Ksenia Bravaya
Keyword(s):  
Molecular Species ◽  
Electronic States ◽  
Equation Of Motion ◽  
Molecular Clusters ◽  
Metastable States ◽  
Coupled Cluster ◽  
Vacuum Region ◽  
Practical Tool ◽  
Ccsd Method

The complex absorbing potential (CAP) approach offers a practical tool for characterization of energies and lifetimes of metastable electronic states, such as temporary anions and core ionized states. Here, we present an implementation of the smooth Voronoi CAP combined with equation-of-motion coupled cluster with single and double substitutions method for metastable states. The performance of the smooth Voronoi and a standard box CAPs is compared for different classes of systems: resonances in isolated molecules and in molecular clusters. The results of the benchmark calculations indicate that the choice of the CAP shape should be guided by the character of the metastable states. While Voronoi CAPs yield stable results in the case of a resonance localized on one molecule, their performance in the cases of states delocalized over two or more molecular species can deteriorate due to the CAP leaking into the vacuum region between the moieties. <br>

Physical Properties of Two Metastable States of Amorphous Silicon

1983 ◽  
Vol 27 ◽  
Author(s):  
G.K. Hubler ◽  
C.N. Waddell ◽  
W.G. Spitzer ◽  
J.E. Fredrickson ◽  
T.A. Kennedy
Keyword(s):  
Fundamental Absorption Edge ◽  
Metastable States ◽  
Dangling Bond ◽  
Paramagnetic Resonance ◽  
Bond Density ◽  
Infrared Reflection ◽  
Amorphous Si ◽  
Electron Paramagnetic ◽  
Anneal Temperature

ABSTRACTCharacterization of the two metastable states of amorphous Si produced by ion implantation is extended to include electron paramagnetic resonance, fundamental absorption edge, and density measurements in addition to infrared reflection. It is found that the properties of the two a-Si states are not dependent upon the mass of the incident ion (12C, 29Si, 31p, 120Sn) or upon the anneal temperature for 400°≤TA≤600°C. The dangling-bond density drops about a factor of 2, the absorption coefficient drops by more than a factor of 5, but the density does not change when the a-Si makes a transition between the two states.

Numerical hartree-fock characterization of metastable states of the He?2 anion

1988 ◽  
Vol 34 (S22) ◽  
pp. 225-230 ◽  
Author(s):  
Tadeusz Pluta ◽  
Rodney J. Bartlett ◽  
Ludwik Adamowicz
Keyword(s):  
Metastable States ◽  
Hartree Fock

scholarly journals CAP-EOM-CCSD Method with Smooth Voronoi CAP for Metastable Electronic States in Molecular Clusters

2020 ◽  
Author(s):  
James Gayvert ◽  
Ksenia Bravaya
Keyword(s):  
Molecular Species ◽  
Electronic States ◽  
Equation Of Motion ◽  
Molecular Clusters ◽  
Metastable States ◽  
Coupled Cluster ◽  
Vacuum Region ◽  
Practical Tool ◽  
Ccsd Method

The complex absorbing potential (CAP) approach offers a practical tool for characterization of energies and lifetimes of metastable electronic states, such as temporary anions and core ionized states. Here, we present an implementation of the smooth Voronoi CAP combined with equation-of-motion coupled cluster with single and double substitutions method for metastable states. The performance of the smooth Voronoi and a standard box CAPs is compared for different classes of systems: resonances in isolated molecules and in molecular clusters. The results of the benchmark calculations indicate that the choice of the CAP shape should be guided by the character of the metastable states. While Voronoi CAPs yield stable results in the case of a resonance localized on one molecule, their performance in the cases of states delocalized over two or more molecular species can deteriorate due to the CAP leaking into the vacuum region between the moieties. <br>

Retarding field energy analyzer for the characterization of negative glow sheet plasmas in a magnetic field

1996 ◽  
Vol 67 (8) ◽  
pp. 2818-2825 ◽  
Author(s):  
J. Mathew ◽  
R. A. Meger ◽  
R. F. Fernsler ◽  
J. A. Gregor
Keyword(s):  
Magnetic Field ◽  
Field Energy ◽  
Energy Analyzer ◽  
Negative Glow

Morphological Characterization of Mycobacteriophage R1

1974 ◽  
Vol 32 ◽  
pp. 254-255
Author(s):  
B. L. Soloff ◽  
T. A. Rado
Keyword(s):  
Carbon Source ◽  
Stationary Phase ◽  
Growth Phase ◽  
Minimal Medium ◽  
Morphological Characterization ◽  
Logarithmic Growth Phase ◽  
Complete Lysis ◽  
Lysogenic Culture ◽  
Logarithmic Growth

Mycobacteriophage R1 was originally isolated from a lysogenic culture of M. butyricum. The virus was propagated on a leucine-requiring derivative of M. smegmatis, 607 leu−, isolated by nitrosoguanidine mutagenesis of typestrain ATCC 607. Growth was accomplished in a minimal medium containing glycerol and glucose as carbon source and enriched by the addition of 80 μg/ ml L-leucine. Bacteria in early logarithmic growth phase were infected with virus at a multiplicity of 5, and incubated with aeration for 8 hours. The partially lysed suspension was diluted 1:10 in growth medium and incubated for a further 8 hours. This permitted stationary phase cells to re-enter logarithmic growth and resulted in complete lysis of the culture.

AEM analysis of crystallization in Ti-based amorphous alloys

1983 ◽  
Vol 41 ◽  
pp. 270-271
Author(s):  
A.R. Pelton ◽  
A.F. Marshall ◽  
Y.S. Lee
Keyword(s):  
Magnetic Properties ◽  
Amorphous Alloys ◽  
Amorphous Materials ◽  
Isothermal Annealing ◽  
Amorphous Matrix ◽  
Nucleation And Growth ◽  
Current Interest ◽  
Amorphous Films ◽  
Electrical And Magnetic Properties

Amorphous materials are of current interest due to their desirable mechanical, electrical and magnetic properties. Furthermore, crystallizing amorphous alloys provides an avenue for discerning sequential and competitive phases thus allowing access to otherwise inaccessible crystalline structures. Previous studies have shown the benefits of using AEM to determine crystal structures and compositions of partially crystallized alloys. The present paper will discuss the AEM characterization of crystallized Cu-Ti and Ni-Ti amorphous films.Cu60Ti40: The amorphous alloy Cu60Ti40, when continuously heated, forms a simple intermediate, macrocrystalline phase which then transforms to the ordered, equilibrium Cu3Ti2 phase. However, contrary to what one would expect from kinetic considerations, isothermal annealing below the isochronal crystallization temperature results in direct nucleation and growth of Cu3Ti2 from the amorphous matrix.

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