scholarly journals Radiation emission from plasma oscillation

2019 ◽  
Author(s):  
MinSup Hur ◽  
Hyung Seon Song ◽  
Kyu Been Kwon ◽  
Teyoun Kang ◽  
Bernhard Ersfeld ◽  
...  
Keyword(s):  
Plasma Oscillation ◽  
Radiation Emission

Characteristics of Two-Dimensional Radiation behind Strong Shock Waves in Air(1st Report) Total Radiation Emission.

1997 ◽  
Vol 45 (523) ◽  
pp. 453-457
Author(s):  
Toshihiro MORIOKA ◽  
Yoshiki MATSUURA ◽  
Nariaki SAKURAI ◽  
Jorge KOREEDA ◽  
Kazuo MAENO ◽  
...  
Keyword(s):  
Shock Waves ◽  
Strong Shock ◽  
Two Dimensional ◽  
Total Radiation ◽  
Radiation Emission ◽  
Strong Shock Waves

Generation of an Attosecond Pulse Based on Collective Spontaneous Radiation Emission of a Layer of Three-Level Atoms Excited by a Pair of Unipolar Pulses

2020 ◽  
Vol 128 (11) ◽  
pp. 1857-1864
Author(s):  
R. M. Arkhipov ◽  
M. V. Arkhipov ◽  
I. Babushkin ◽  
A. V. Pakhomov ◽  
N. N. Rosanov
Keyword(s):  
Attosecond Pulse ◽  
Spontaneous Radiation ◽  
Radiation Emission

Deep Impurities with Collision Delay

2018 ◽  
Author(s):  
Klaus Morawetz
Keyword(s):  
Wave Function ◽  
Kinetic Equation ◽  
Elastic Scattering ◽  
Response Function ◽  
Plasma Oscillation ◽  
Impurity Scattering ◽  
Fermi Momentum ◽  
Screening Length ◽  
Plasma Mode ◽  
Dissipative Mechanism

The linearised nonlocal kinetic equation is solved analytically for impurity scattering. The resulting response function provides the conductivity, plasma oscillation and Fermi momentum. It is found that virial corrections nearly compensate the wave-function renormalizations rendering the conductivity and plasma mode unchanged. Due to the appearance of the correlated density, the Luttinger theorem does not hold and the screening length is influenced. Explicit results are given for a typical semiconductor. Elastic scattering of electrons by impurities is the simplest but still very interesting dissipative mechanism in semiconductors. Its simplicity follows from the absence of the impurity dynamics, so that individual collisions are described by the motion of an electron in a fixed potential.

scholarly journals Open-Loop Class-BD Audio Amplifiers with Balanced Common-Mode Output

Electronics ◽  
2021 ◽  
Vol 10 (12) ◽  
pp. 1381
Author(s):  
Wojciech Kołodziejski ◽  
Stanisław Kuta ◽  
Jacek Jasielski
Keyword(s):  
Experimental Studies ◽  
Open Loop ◽  
Modulation Scheme ◽  
Output Stage ◽  
Radiation Emission ◽  
Common Mode ◽  
Audio Amplifiers ◽  
Gate Control ◽  
Output Filter ◽  
Gate Drivers

This paper presents new architectures and implementations of original open-loop Class-BD audio amplifiers with balanced Common-Mode output. The output stage of each proposed amplifier includes the typical H-bridge with four MOSFETs and four additional MOSFET switches that balance and keep the Common-Mode output constant. The presented amplifiers employ the extended NBDD PWM or PSC PWM modulation scheme. When the output stage is built only on NMOSFET transistors, gate drivers require a floating power supply, using a self-boost charge pump with capacitive isolation of the control signal. The use of complementary MOSFETs in the output stage greatly simplifies gate control systems. The proposed amplifiers were compared to the typical Class-BD configuration, using the optimal NBDD modulation with respect to audio performance of the Differential-Mode (DM) and Common-Mode (CM) outputs. Basic SPICE simulations and experimental studies have shown that the proposed Class-BD amplifiers have similar audio performance to the prototype with the optimal NBDD modulation scheme, while at the same time having a balanced constant voltage CM output, thus eliminating the main contributor to radiation emission. As a result, the filtering of the DM output signals can be greatly simplified, while the filtering of the CM output signals can be theoretically eliminated. Practically, due to the timing errors added by the gate drivers, spikes are generated at the CM output, which are very easy to filter out by the reduced LC output filter, even at very low L.

scholarly journals Localized heating in nanoscale Pt constrictions measured using blackbody radiation emission

2008 ◽  
Vol 93 (21) ◽  
pp. 213108 ◽  
Author(s):  
Daniel R. Ward ◽  
Naomi J. Halas ◽  
Douglas Natelson
Keyword(s):  
Blackbody Radiation ◽  
Radiation Emission ◽  
Localized Heating
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