Using time-dependent rate equations to describe chirped pulse excitation in condensed phases

1999 ◽  
Vol 302 (5-6) ◽  
pp. 405-410 ◽  
Author(s):  
Christopher J. Bardeen ◽  
Jianshu Cao ◽  
Frank L.H. Brown ◽  
Kent R. Wilson
Keyword(s):  
Time Dependent ◽  
Rate Equations ◽  
Pulse Excitation ◽  
Condensed Phases ◽  
Chirped Pulse ◽  
Dependent Rate

Equations de bilan dépendentes du temps appliquées aux collisions inélastiques

1982 ◽  
Vol 60 (5) ◽  
pp. 654-658
Author(s):  
A. Lupaşcu ◽  
St. Tudorache ◽  
I. M. Popescu
Keyword(s):  
Cross Sections ◽  
Matrix Method ◽  
Inelastic Collisions ◽  
Time Dependent ◽  
Rate Equations ◽  
General Matrix ◽  
Dependent Rate ◽  
Minimal Information

A general matrix method for the time dependent rate equations applied to inelastic collisions is presented. The minimal information needed to compute the collisional cross-sections is deduced and used to study the particular case of two excited levels.

Thermally-Stimulated Currents in Thin-Film Semiconductors: Analysis and Modelling

2006 ◽  
Vol 910 ◽  
Author(s):  
Charles Main ◽  
Nacera Souffi ◽  
Steve Reynolds ◽  
Zdravka Aneva ◽  
Rudi Brüggemann ◽  
...  
Keyword(s):  
Thin Film ◽  
Carrier Lifetime ◽  
Linear Time ◽  
Time Dependent ◽  
Rate Equations ◽  
Conductivity Data ◽  
Thermally Stimulated Current ◽  
Dependent Rate ◽  
Wide Range ◽  
Thin Film Semiconductors

AbstractThis paper investigates the robustness of the thermally stimulated current technique as a method to determine the density of states distribution in thin film semiconductors under a wide range of conditions. Numerical simulation is used to solve the non-linear time-dependent rate equations for free and trapped charge in systems with continuous and structured DOS profiles. We explore the derivation of energy and density scales from temperature and conductivity data. We examine for these systems the limits of the method's apparent immunity to varying conditions of strong and weak retrapping, and investigate the corrections required for variations in carrier lifetime with temperature.

Complex kinetic systems with time-dependent rate coefficients

1989 ◽  
Vol 44 (3) ◽  
pp. 185-191 ◽  
Author(s):  
J.C. Andre ◽  
F. Baros ◽  
J.M.G. Martinho
Keyword(s):  
Time Dependent ◽  
Rate Coefficients ◽  
Dependent Rate

scholarly journals Modeling Growth, Containment and Decay of the COVID-19 Epidemic in Italy

2020 ◽  
Vol 8 ◽  
Author(s):  
Francesco Capuano
Keyword(s):  
Exponential Growth ◽  
Compartment Model ◽  
Growth Behavior ◽  
Time Dependent ◽  
Model Parameters ◽  
Susceptible Population ◽  
Dependent Rate ◽  
Slow Decay ◽  
Cumulative Curve ◽  
Modeling Growth

A careful inspection of the cumulative curve of confirmed COVID-19 infections in Italy and in other hard-hit countries reveals three distinct phases: i) an initial exponential growth (unconstrained phase), ii) an algebraic, power-law growth (containment phase), and iii) a relatively slow decay. We propose a parsimonious compartment model based on a time-dependent rate of depletion of the susceptible population that captures all such phases for a plausible range of model parameters. The results suggest an intimate interplay between the growth behavior, the timing and implementation of containment strategies, and the subsequent saturation of the outbreak.

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