Die Bildung schlechtleitender Schichten bei der Elektrolyse des Glases

Schulze, Günther

doi:10.1002/andp.19123420304

Cited by 12 publications

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“…However in long term applications a rising gain is expected. To So far we have not observed this effect under normal conditions with the glass (Schott this region would be accompanied by a high field and increased gas amplification [12]. the migration of the alkali ions in glasses [11] is also ignored.…”

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Simulation of electrostatic properties and gas amplification in microstrip gas chambers and comparison with measurements

Schmidt

Werthenbach

Zech

1994

Nuclear Instruments and Methods in Physics Research Section A:

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had raised by about 30 %, when the high voltage was on during heating, but remained OCR Output orders of magnitude by heating it to 60°C for two days. After cooling down the gain verify this prediction we have reduced the resistivity of the substrate by more than two D263) used by us. However in long term applications a rising gain is expected. To So far we have not observed this effect under normal conditions with the glass (Schott this region would be accompanied by a high field and increased gas amplification [12]. the migration of the alkali ions in glasses [11] is also ignored. The high resistivity in A possible charge carrier depletion zone near the anode, which could be caused by resistivities.strength [10]. We neglect this field dependence and assume uniform bulk and surface Experimentally it is known that the conductivity in glasses increases with the field critica.lly on the treatment of the surface Glasses and plastic substrates have a non negligible surface conductivity which depends 2.1 Substrate properties tions, where the performance is deteriorating due to high rates are not simulated.For the computation of the electric field we neglect the ions in the gas. Thus condi applicability of the results.are not necessarily valid for all operating conditions of the detector and may limit the processes and preferred to use a simple model. As a consequence the computations have avoided the introduction of adjustable empirical parameters to account for theseThe processes occurring in a MSGC are far too complicated to be simulated in detail. We 2 The simulation model size of signals induced on the cathode strips and back plane electrodes.geometric parameters on the field, the gas amplification, the anode capacitance, and the surements with glass substrates. Finally in section 4 we estimate the effect of some to compute the field for different configurations and compare the simulation to meaIn the following section we describe the method, which then is used in section 3 amplification for the standard 90:10 argon methane mixture.currents. To allow comparisons with experimental data we have also simulated the gas applied the charge simulation method and included the influence of surface and bulk ref. [5] are similar to those presented here, but differ in the assumptions made for the encouraging steps in this direction have been done [5, 6,7,8]. The investigations of which could be reduced if reliable simulations with predictive power were available. VeryThe production and test of different structures is a tedious and expensive procedure the published results can be found in [2,3,4]. interesting developments since the first realization by A. Oed References to most of bers are replaced by lithographically produced strips on solid substrates have had many Gas microstrip detectors in which the wires of the standard multiwire proportional cham

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“…The values are given for the center of the anode. The first column corresponds to dependence [13,12] should not be attributed exclusively to ion deposition.…”

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confidence: 99%