Results 51 to 60 of about 708,578 (251)

Cosmic Reionization and the 21-cm signal: Comparison between an analytical model and a simulation [PDF]

, 2008
We measure several properties of the reionization process and the corresponding low-frequency 21-cm signal associated with the neutral hydrogen distribution, using a large volume, high resolution simulation of cosmic reionization.
Aghanim N., Alexandre Amblard, Asantha Cooray, Hy Trac, Jonathan Pritchard, Mário G. Santos, Renyue Cen   +6 more
core   +3 more sources

Impact of minority concentration on fundamental (H)D ICRF heating performance in JET-ILW [PDF]

, 2014
ITER will start its operation with non-activated hydrogen and helium plasmas at a reduced magnetic field of B-0 = 2.65 T. In hydrogen plasmas, the two ion cyclotron resonance frequency (ICRF) heating schemes available for central plasma heating ...
A. Czarnecka, D. Van Eester, E. Lerche, F. Rimini, I. Monakhov, K. Crombé, L. Colas, M. Santala, M.-L. Mayoral, null null, P. Jacquet, V. Bobkov   +11 more
core   +2 more sources

Dispersion of Switching Processes in Ferroelectric Ceramics

Advances in Condensed Matter Physics, 2017
The influence of the switching processes on self-heating of ferroelectric PZT ceramics samples was studied in high-amplitude sine and meander electric fields in a wide frequency range of 50 to 1500 Hz.
O. V. Malyshkina, Anton Yurievich Eliseev, R. M. Grechishkin   +2 more
doaj   +1 more source

Two-frequency heating technique at the 18 GHz electron cyclotron resonance ion source of the National Institute of Radiological Sciences

, 2014
The two-frequency heating technique was studied to increase the beam intensities of highly charged ions provided by the high-voltage extraction configuration (HEC) ion source at the National Institute of Radiological Sciences (NIRS).
Biri, S., Drentje, A. G., Kato, Y., Kitagawa, A., Muramatsu, M., Rácz, R., Sasaki, N., Takasugi, W., Yano, K.   +8 more
core   +1 more source

HIGH-FREQUENCY TRANSISTOR OSCILLATORS FOR INDUCTION HEATING AND HARDENING

Литьë и металлургия, 2011
The main type of generators with extended frequency range from 20 to 80 kHz, which enables to replace electron-tube generators, is described. The advantages of such generators are nated, the main characteristics are given.
I. H. Isaev
doaj  

A new approach for the stability analysis of high-frequency series resonant inverter-fitted induction heater

Ain Shams Engineering Journal, 2019
This paper presents a new approach for the stability analysis of a high-frequency series resonant inverter (HFSRI) in induction heating system. Here the mathematical analysis of HFSRI is described and the stability analysis is obtained by using MATLAB ...
Kaushik Neogi, Moumita Sadhu, Niladri Das, Pradip Kumar Sadhu, Agamani Chakraborty, Ankur Ganguly, Atanu Banerjee   +6 more
doaj   +1 more source

Constraints on the Heating of High Temperature Active Region Loops: Observations from Hinode and SDO

, 2011
We present observations of high temperature emission in the core of a solar active region using instruments on Hinode and SDO. These multi-instrument observations allow us to determine the distribution of plasma temperatures and follow the evolution of ...
Amy R. Winebarger, Antiochos, Berger, Bradshaw, Brooks, Brooks, Brooks, David H. Brooks, Fletcher, Harry P. Warren, Jakimiec, Kashyap, Kashyap, Klimchuk, Klimchuk, Ko, Lee, Lundquist, Martens, Patsourakos, Schrijver, Tripathi, Warren, Warren, Warren, Warren, Warren, Winebarger, Winebarger   +28 more
core   +1 more source

Multi-Physics Modeling and Process Simulation for a Frequency-Shifted Solid-State Source Microwave Oven

IEEE Access, 2019
The recent rapid growth of the semiconductor industry in development of high power microwave source has open a new promising avenue by full electronic control over the electromagnetic field towards improve the microwave heating performance. In this paper,
Zhiliao Du, Zhe Wu, Weiwei Gan, Gao Liu, Xianfeng Zhang, Jianlong Liu, Baoqing Zeng   +6 more
doaj   +1 more source

High frequency-heated air turbojet [PDF]

A description is given of a method to heat air coming from a turbojet compressor to a temperature necessary to produce required expansion without requiring fuel.
Miron, J. H. D.
core   +1 more source

Heating mechanisms in radio frequency driven ultracold plasmas [PDF]

, 2012
Several mechanisms by which an external electromagnetic field influences the temperature of a plasma are studied analytically and specialized to the system of an ultracold plasma (UCP) driven by a uniform radio frequency (RF) field.
D. A. Tate, D. F. Lawden, J. P. Boyd, L. C. Andrews, L. D. Landau, L. J. Spitzer, L. P. J. Kamp, M. Mitchner, O. J. Luiten, P. Mulser, P. W. Smorenburg, S. A. Schelkunoff, T. F. Gallagher, V. P. Silin   +13 more
core   +2 more sources