Surface potential mapping of an argon lamp during electrical breakdown

Gendre, MF; Bowden, M. D.; Nieuwenhuizen, H.C.M. van den; Haverlag, M Marco; Gielen, J.W.A.M.; Kroesen, G.M.W.

doi:10.1109/tps.2005.845947

Cited by 18 publications

(19 citation statements)

References 2 publications

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“…Horstman and Oude Lansink [5], and more recently also Gendre [9], have performed electrostatic probe measurements of the potential just outside the lamp. In [5] the surface charge was calculated on the inside of the lamp wall from these experimental data, but the fact that a net charge exists inside the discharge volume was disregarded.…”

Section: Surface Potentialmentioning

confidence: 99%

“…Breakdown in gas discharge tubes is a process that has been studied in the past [1][2][3][4] and has recently received renewed attention in the context of fluorescent lighting [5][6][7][8][9]. In this technological application the lowest potential at which the lamp ignites is an important parameter, as it defines specifications for lamp-driving circuitry.…”

Section: Introductionmentioning

confidence: 99%

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Model study of DC ignition of fluorescent tubes

Brok¹,

Gendre²,

Mullen³

2006

J. Phys. D: Appl. Phys.

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Breakdown in a discharge tube is investigated by means of a fluid model. The discharge tube is similar to a compact fluorescent lamp tube, containing argon at 3 Torr and mercury at a few millitorr. It was found that the minimum breakdown voltage is decreased substantially compared with a tube containing pure argon. Penning ionization of mercury via an argon metastable state plays an important role in this effect. This is illustrated for a lamp operated on a DC voltage, where significant Penning ionization takes place in the wake of the ionization front. Furthermore, contrary to what is suggested in earlier literature, the development of the surface potential of the lamp is shown to be not only determined by surface charges, but also by volume charges.

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Section: Surface Potentialmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Model study of DC ignition of fluorescent tubes

Brok¹,

Gendre²,

Mullen³

2006

J. Phys. D: Appl. Phys.

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“…Для его подтверждения необходимо проведение дополнительных исследований, дающих информацию о поверхностном заряде стенки, процессах его появления, миграции и стекания. Как упоминалось во Введении, для длинных трубок имеются данные только о величине заряда [4,5,8] и потенциала [5,6], возникающих при прохождении предпробойной ВИ. Есть также работы [24,25], в которых из сравнения модельных расчетов с экспериментом по-лучены оценки плотности электронов на стенке, контактирующей с разрядной плазмой.…”

Section: экспериментальные результаты и их обсуждениеunclassified

“…Стенка заряжается током, который протекает через плазменный след, оставленный волной, и далее через емкость трубка−земля. Плотность поверхностного заряда измерялась в работах [4,5], а потенциал стенки в работах [5,6]. Эти измерения проводились с помощью емкостного (электростатического) зонда.…”

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“…Как и в случае короткого разрядного промежутка, время t s и тем самым разброс значений t d могут быть подавлены с помощью дополнительного источника электронов, инициирующих первичный пробой. При отрицательном потенциале ВВЭ это может быть термоэмиссия с нагреваемого катода [4][5][6][7]. При положительном потенциале ВВЭ такой эффект можно достичь освещением прианодной области трубки излучением с длиной волны короче ∼ 500 nm [2,16,17].…”

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Зависимость Потенциала Пробоя От Скорости Роста Напряжения В Длинной Разрядной Трубке При Низком Давлении

Ионих¹,

Мещанов²,

Иванов³

2019

Журнал Технической Физики

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The dynamical breakdown voltage in a long (80 cm) discharge tube is measured for neon, argon, their mixture, and argon with mercury vapors at a pressure of 80 – 400 Pa in a wide range of anode voltage rise rate (dU/dt ~ 10–4 – 102 kV/ms). Non-monotonous dependence of the breakdown potential on the dU/dt magnitude is found, with the minimum at 0.1 – 10 kV/ms values. The growth of the breakdown voltage at higher dU/dt is caused by existence of the breakdown delay time. The increase in the breakdown potential in a lower voltage rise rate is presumably due to specialty of the breakdown in long tubes and is a result of the deposit of the surface charge on the tube wall. The charge diminishes potential difference between the anode and the wall, so obstructing the initial breakdown between them. The data of additional experiments with the pulses raised to the constant level pedestal confirm the possibility of such explanation.

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Triggering of the breakdown in a discharge tube by visible-spectrum light pulses

Meshchanov¹,

Иванов²,

Ionikh³

et al. 2018

J. Phys. D: Appl. Phys.

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The influence of the pulses of visible-spectrum light on the breakdown in a discharge tube was studied experimentally. The tube of 80 cm length and 1.5 cm inner diameter contained neon at a pressure of 0.6 Torr. High-voltage rectangular or ramp pulses were applied to the anode. The light pulses of 0.1–100 µs duration were produced by the light-emitting diode or laser diode at a wavelength of 460 and 407 nm, respectively. A small area of the tube wall near the anode was illuminated at different moments after or before the voltage pulse onset. It has been found that the light pulse exerts the strongest influence on the breakdown. In the case of rectangular pulse, it drastically decreases the statistical delay time of the breakdown. As a result, all the breakdowns, which did not happen before the light pulse, occur during several microseconds after its onset. The light pulse influences the breakdown delay time even if it terminates before the voltage pulse onset. This can be explained by the finite lifetime of the secondary electrons produced by the light. In the case of the ramp voltage pulse, an essential decrease in the breakdown voltage scatter is observed under illumination. The effect is especially pronounced if the light pulse is applied at the moment when the anode voltage is equal to or somewhat lower than the minimum breakdown voltage. For later moments, the breakdown voltages are strictly bounded by both sides. The average breakdown voltage decreases noticeably. As for the mechanism responsible for the observed effect, electron photodesorption from the tube wall is suggested. This process presumably occurs in dielectric barrier discharge at atmospheric pressure where it can influence the breakdown voltage and provide synchronous breakdown of micro discharges, thus causing the formation of multiple filaments.

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Surface potential mapping of an argon lamp during electrical breakdown

Cited by 18 publications

References 2 publications

Model study of DC ignition of fluorescent tubes

Model study of DC ignition of fluorescent tubes

Зависимость Потенциала Пробоя От Скорости Роста Напряжения В Длинной Разрядной Трубке При Низком Давлении

Triggering of the breakdown in a discharge tube by visible-spectrum light pulses

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