Dielectric strength of liquid helium in millimeter gaps

Schwenterly, S. W.; Gauster, W. F.; Kernohan, R. H.; Long, Hongyu; Menon, M. M.

doi:10.1109/ceidp.1974.7735954

Cited by 6 publications

(12 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Their results showed that breakdown fields increase for gap spacings below about 1 mm but become nearly constant for spacings above 1.5 mm. The results of Gerhold 68 made with spherical electrodes of 50-mm diameter and gaps up to 0.5 mm are consistent with those of Schwenterly et al 39 where for gap spacings above 1.5 mm, the breakdown fields are nearly constant.…”

Section: E Electrode Gap Spacing Dependencesupporting

confidence: 83%

“…This issue has lead to some inconsistencies in published results regarding the existence of a gap size effect for electrical breakdown in LHe. Several previous studies 28, [33][34][35][36][37] have shown that the breakdown voltage increases approximately linearly with gap size, whereas the results from others 38,39 have suggested a possible square-root law as found in vacuum breakdown. At the same time, it has also been suggested that whenever spherical electrodes are used, a hidden area effect could emerge.…”

Section: Scale Dependencementioning

confidence: 98%

“…Such a dependence is often expressed in the form V = kd s , where V is the breakdown voltage, k is a constant, d is the gap spacing, and the index s characterizes the strength of the dependence. However, there is no generally accepted mechanism of breakdown that would form the basis for such a relationship, and some experimenters 39,67 have suggested an alternative relation of V = V 0 +ha 1−j . But inconsistencies in experimental results have thus far prevented any satisfactory resolution to this problem.…”

Section: E Electrode Gap Spacing Dependencementioning

confidence: 99%

“…Measurements by Schwenterly et al 39 utilized stainless steel sphere-plane electrodes with a diameter of 38 mm and gap spacings between 0.25 − 2.5 mm. Their results showed that breakdown fields increase for gap spacings below about 1 mm but become nearly constant for spacings above 1.5 mm.…”

Section: E Electrode Gap Spacing Dependencementioning

confidence: 99%

“…Hence, it is conceivable that the spacing effect is merely a consequence of an un- FIG. 20: The mean breakdown field as a function of the stressed area as measured by Goldschvartz and Blaisse, 66 Schwenterly et al, 39 and Meyerhoff. 37 For the Meyerhoff measurements, the breakdown fields in non-boiling LHe are about 37% higher than the the fields in boiling liquid.…”

Section: E Electrode Gap Spacing Dependencementioning

confidence: 99%

See 4 more Smart Citations

A study of DC electrical breakdown in liquid helium through analysis of the empirical breakdown field distributions

Phan,

Wei,

Beaumont

et al. 2020

Preprint

View full text Add to dashboard Cite

We report results from a study on electrical breakdown in liquid helium using near-uniform-field stainless steel electrodes with a stressed area of ∼0.725 cm 2 . The distribution of the breakdown field is obtained for temperatures between 1.7 K and 4.0 K, pressures between the saturated vapor pressure and 626 Torr, and with electrodes of different surface polishes. A data-based approach for determining the electrode-surfacearea scaling of the breakdown field is presented. The dependence of the breakdown probability on the field strength as extracted from the breakdown field distribution data is used to show that breakdown is a surface phenomenon closely correlated with Fowler-Nordheim field emission from asperities on the cathode. We show that the results from this analysis provides an explanation for the supposed electrode gap-size effect and also allows for a determination of the breakdown-field distribution for arbitrary shaped electrodes. Most importantly, the analysis method presented in this work can be extended to other noble liquids to explore the dependencies for electrical breakdown in those media.1 Ref. 7 reports measurements at 0.4 K

show abstract

Section: E Electrode Gap Spacing Dependencesupporting

confidence: 83%

Section: Scale Dependencementioning

confidence: 98%

Section: E Electrode Gap Spacing Dependencementioning

confidence: 99%

Section: E Electrode Gap Spacing Dependencementioning

confidence: 99%

Section: E Electrode Gap Spacing Dependencementioning

confidence: 99%

See 3 more Smart Citations

A study of DC electrical breakdown in liquid helium through analysis of the empirical breakdown field distributions

Phan,

Wei,

Beaumont

et al. 2020

Preprint

View full text Add to dashboard Cite

show abstract

Gap size effect on liquid helium breakdown

1994

View full text Add to dashboard Cite

Direct comparison of high voltage breakdown measurements in liquid argon and liquid xenon

et al. 2019

View full text Add to dashboard Cite

A: As noble liquid time projection chambers grow in size their high voltage requirements increase, and detailed, reproducible studies of dielectric breakdown and the onset of electroluminescence are needed to inform their design. The Xenon Breakdown Apparatus (XeBrA) is a 5-liter cryogenic chamber built to characterize the DC high voltage breakdown behavior of liquid xenon and liquid argon. Electrodes with areas up to 33 cm 2 were tested while varying the cathode-anode separation from 1 to 6 mm with a voltage difference up to 75 kV. A power-law relationship between breakdown field and electrode area was observed. The breakdown behavior of liquid argon and liquid xenon within the same experimental apparatus was comparable.

show abstract

Dielectric strength of liquid helium in millimeter gaps

Cited by 6 publications

References 0 publications

A study of DC electrical breakdown in liquid helium through analysis of the empirical breakdown field distributions

A study of DC electrical breakdown in liquid helium through analysis of the empirical breakdown field distributions

Gap size effect on liquid helium breakdown

Direct comparison of high voltage breakdown measurements in liquid argon and liquid xenon

Contact Info

Product

Resources

About