scholarly journals The Neutral Gas Desorption and Breakdown on a Metal-Dielectric Junction Immersed in a Plasma

2002 ◽  
Author(s):  
Boris Vayner ◽  
Joel Galofaro ◽  
Dale Ferguson
Keyword(s):  
Neutral Gas ◽  
Gas Desorption

scholarly journals Synchrotron radiation induced neutral gas desorption from samples of vacuum chambers

Vacuum ◽  
1988 ◽  
Vol 38 (8-10) ◽  
pp. 933-936 ◽  
Author(s):  
M Andritschky ◽  
O Gröbner ◽  
AG Mathewson ◽  
F Schumann ◽  
P Strubin ◽  
...  
Keyword(s):  
Synchrotron Radiation ◽  
Vacuum Chambers ◽  
Neutral Gas ◽  
Gas Desorption ◽  
Radiation Induced

Detection of Neutral Gas in the Central Galaxy of the Centaurus Cluster

1997 ◽  
Vol 486 (1) ◽  
pp. 253-258 ◽  
Author(s):  
William B. Sparks ◽  
C. Marcella Carollo ◽  
Ferdinando Macchetto
Keyword(s):  
Neutral Gas ◽  
Central Galaxy

scholarly journals Self-waveguiding of relativistic laser pulses in neutral gas channels

2020 ◽  
Vol 2 (4) ◽  
Author(s):  
L. Feder ◽  
B. Miao ◽  
J. E. Shrock ◽  
A. Goffin ◽  
H. M. Milchberg
Keyword(s):  
Laser Pulses ◽  
Neutral Gas

scholarly journals Concept of generation of extremely compressed high-energy electron bunches in several interfering intense laser pulses with tilted amplitude fronts

2012 ◽  
Vol 31 (1) ◽  
pp. 23-28 ◽  
Author(s):  
V.V. Korobkin ◽  
M.Yu. Romanovskiy ◽  
V.A. Trofimov ◽  
O.B. Shiryaev
Keyword(s):  
Laser Pulses ◽  
High Energy ◽  
Intense Laser ◽  
High Energy Electron ◽  
Speed Of Light ◽  
Electron Bunches ◽  
Newton Equation ◽  
High Energies ◽  
Neutral Gas ◽  
Intense Laser Pulses

AbstractA new concept of generating tight bunches of electrons accelerated to high energies is proposed. The electrons are born via ionization of a low-density neutral gas by laser radiation, and the concept is based on the electrons acceleration in traps arising within the pattern of interference of several relativistically intense laser pulses with amplitude fronts tilted relative to their phase fronts. The traps move with the speed of light and (1) collect electrons; (2) compress them to extremely high density in all dimensions, forming electron bunches; and (3) accelerate the resulting bunches to energies of at least several GeV per electron. The simulations of bunch formation employ the Newton equation with the corresponding Lorentz force.

scholarly journals A Comprehensive Coal Reservoir Classification Method Base on Permeability Dynamic Change and Its Application

Energies ◽  
2020 ◽  
Vol 13 (3) ◽  
pp. 644 ◽  
Author(s):  
Xinlu Yan ◽  
Songhang Zhang ◽  
Shuheng Tang ◽  
Zhongcheng Li ◽  
Yongxiang Yi ◽  
...  
Keyword(s):  
Coalbed Methane ◽  
Dynamic Change ◽  
Initial Permeability ◽  
Gas Production ◽  
Gas Desorption ◽  
Reservoir Permeability ◽  
Geological Conditions ◽  
Production Stages ◽  
Productivity Potential ◽  
Coal Reservoir

Due to the unique adsorption and desorption characteristics of coal, coal reservoir permeability changes dynamically during coalbed methane (CBM) development. Coal reservoirs can be classified using a permeability dynamic characterization in different production stages. In the single-phase water flow stage, four demarcating pressures are defined based on the damage from the effective stress on reservoir permeability. Coal reservoirs are classified into vulnerable, alleviative, and invulnerable reservoirs. In the gas desorption stage, two demarcating pressures are used to quantitatively characterize the recovery properties of permeability based on the recovery effect of the matrix shrinkage on permeability, namely the rebound pressure (the pressure corresponding to the lowest permeability) and recovery pressure (the pressure when permeability returns to initial permeability). Coal reservoirs are further classified into recoverable and unrecoverable reservoirs. The physical properties and influencing factors of these demarcating pressures are analyzed. Twenty-six wells from the Shizhuangnan Block in the southern Qinshui Basin of China were examined as a case study, showing that there is a significant correspondence between coal reservoir types and CBM well gas production. This study is helpful for identifying geological conditions of coal reservoirs as well as the productivity potential of CBM wells.

scholarly journals The VLT-UVES survey for molecular hydrogen in high-redshift damped Lyman α systems: physical conditions in the neutral gas

2005 ◽  
Vol 362 (2) ◽  
pp. 549-568 ◽  
Author(s):  
Raghunathan Srianand ◽  
Patrick Petitjean ◽  
Cédric Ledoux ◽  
Gary Ferland ◽  
Gargi Shaw
Keyword(s):  
Molecular Hydrogen ◽  
High Redshift ◽  
Physical Conditions ◽  
Neutral Gas
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