scholarly journals The effect of electric field on attachment of electrons to solutes in liquid argon

1989 ◽  
Author(s):  
R. Holroyd
Keyword(s):  
Electric Field ◽  
Liquid Argon

Effect of an electric field on luminescence quenching in liquid argon

1992 ◽  
Vol 46 (1) ◽  
pp. 540-543 ◽  
Author(s):  
Akira Hitachi ◽  
Jay A. LaVerne ◽  
Tadayoshi Doke
Keyword(s):  
Electric Field ◽  
Liquid Argon ◽  
Luminescence Quenching

Positron annihilation in liquid helium and liquid argon under an electric field

1995 ◽  
Vol 28 (16) ◽  
pp. 3643-3659 ◽  
Author(s):  
I Pepe ◽  
D A L Paul ◽  
J Steyaert ◽  
F Gimeno-Nogues ◽  
J Deutsch ◽  
...  
Keyword(s):  
Electric Field ◽  
Positron Annihilation ◽  
Liquid Helium ◽  
Liquid Argon

Electric field effect on electron capture by SF6 in liquid argon and xenon

1975 ◽  
Vol 34 (3) ◽  
pp. 466-469 ◽  
Author(s):  
U. Sowada ◽  
G. Bakale ◽  
K. Yoshino ◽  
W.F. Schmidt
Keyword(s):  
Electric Field ◽  
Electron Capture ◽  
Field Effect ◽  
Liquid Argon ◽  
Electric Field Effect

scholarly journals Electron Mobility in Liquid Argon

1959 ◽  
Vol 12 (1) ◽  
pp. 105 ◽  
Author(s):  
FD Stacey
Keyword(s):  
Kinetic Theory ◽  
Electric Field ◽  
Electron Energy ◽  
Cross Section ◽  
Drift Velocity ◽  
Electron Mobility ◽  
Alternative Explanation ◽  
Liquid Argon ◽  
Scattering Cross Section ◽  
Scattering Cross

Experiments of Williams (1957) showed that the drift velocity of electrons in liquid argon to which an electric field F is applied is essentially independent of F. If the electrons remain free then their motion can be described by kinetic theory, from which it appears that electron mobility is proportional to F-I and drift velocity to Fli. This is the dependence reported by Malkin and Schultz (1951), but it is evident that the recent, more exhaustive work of Williams (1957) is correct on this point and therefore that kinetic theory is not applicable to the problem. This theory could in principle be extended to explain a fieldindependent velocity, by supposing a special dependence upon electron energy of the scattering cross section for the collision of electrons with argon atoms, but this is very artificial and unnecessary in view of the alternative explanation suggested here; in any case it leaves further serious objections, which will also be discussed briefly.

scholarly journals First Operation of a Resistive Shell Liquid Argon Time Projection Chamber: A New Approach to Electric-Field Shaping

Instruments ◽  
2019 ◽  
Vol 3 (2) ◽  
pp. 28 ◽  
Author(s):  
Roman Berner ◽  
Yifan Chen ◽  
Antonio Ereditato ◽  
Patrick P. Koller ◽  
Igor Kreslo ◽  
...  
Keyword(s):  
Electric Field ◽  
Noble Gas ◽  
New Technology ◽  
Liquid Argon ◽  
Film Structure ◽  
Field Cage ◽  
Active Volume ◽  
Term Operation ◽  
Background Events ◽  
Time Projection

We present a new technology for the shaping of the electric field in Time Projection Chambers (TPCs) using a carbon-loaded polyimide foil. This technology allows for the minimisation of passive material near the active volume of the TPC and, thus, is capable to reduce background events originating from radioactive decays or scattering on the material itself. Furthermore, the high and continuous electric resistivity of the foil limits the power dissipation per unit area and minimizes the risks of damages in the case of an electric field breakdown. Replacing the conventional field cage with a resistive plastic film structure called “shell” decreases the number of components within the TPC and, therefore, reduces the potential points of failure when operating the detector. A prototype liquid argon (LAr) TPC with such a resistive shell and with a cathode made of the same material was successfully tested for long-term operation with electric field values up to 1.6 k V cm − 1 . The experiment shows that it is feasible to successfully produce and shape the electric field in liquefied noble-gas detectors with this new technology.

scholarly journals The Ionization of Liquid Argon by a-Particles

1958 ◽  
Vol 11 (2) ◽  
pp. 158 ◽  
Author(s):  
FD Stacey
Keyword(s):  
Electric Field ◽  
Charge Separation ◽  
Applied Electric Field ◽  
Positive Charge ◽  
Liquid Argon ◽  
Energetic Electrons

Calculations suggest that in liquid argon the column of ionization produced by :an a-particle consists of a core of positive charge 0�6?1 �5�10?5 cm in diameter concentric with a larger cloud of electrons extending to a diameter of 40�10?5 cm. This leads to a new description of charge separation in an applied electric field, in which the positive and negative charges are drawn apart slightly (polarized) and the more energetic electrons Bscape from the edge of the column.

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