Fast photon counting in negative corona discharges in the Trichel regime

Gravendeel, B; Hoog, F. J. de; Schoenmakers, M A M

doi:10.1088/0022-3727/21/5/012

Cited by 17 publications

(9 citation statements)

References 6 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Single-photon counting techniques, where the weak PM signals from the space, time and spectrally resolved light from millions of streamer pulses were superposed, improved the time resolution to 0.3-0.4 ns [24][25][26][27]. Major progress in the spectroscopic studies of the streamer has been made through the works of Marode, Gallimberti, Goldmann, Hartmann and other researchers [28][29][30][31][32][33][34][35][36][37].…”

Section: Introductionmentioning

confidence: 99%

Subnanosecond spectral diagnostics of streamer discharges: I. Basic experimental results

Shcherbakov¹,

Sigmond

2007

J. Phys. D: Appl. Phys.

View full text Add to dashboard Cite

We have carried out cross-correlated high-resolved electrodynamical and spectro-optical measurements of different characterizations in a high-stable regime of the dc positive streamer corona in short gap in atmospheric density laboratory air. Special attention was paid to the measurement of absolute intensities of the second positive (SPS) and first negative (FNS) systems of molecular nitrogen as well as for further improvement in the spatiotemporal resolution along with high synchronization and stability. In the cathode region, the FNS and SPS emission temporal waveforms during primary streamer development have been recorded with the cross-correlated synchronization not worse than 0.1 ns and spatiotemporal resolution around 0.01–0.1 mm along the axis and 0.2–0.4 ns in the multiphoton mode of the PMT-based detector and in the single pulse acquisition mode of the measuring system. The shortest rise-times of the corresponding voltage waveforms were found to be around 0.3–0.4 ns for the SPS (0,0)-band and 0.2–0.3 ns for the FNS (0,0)-band, the full widths at the half-altitude ranging around 1.4–1.5 ns and 0.5–0.6 ns, respectively. Again, the absolute values and the ratio of the synchronized temporal waveforms of the SPS to the FNS (0,0)-bands have been recorded across the entire gap in the accumulation and averaging acquisition mode of the measuring system with somewhat worse temporal resolution but with adequate stability and stochasticity. Various supporting characteristics such as the synchronous anode and cathode electric current waveforms, the streamer velocity and the gas temperature within the streamer channel region have been measured and presented as well. All the data in the aggregate allow reconstruction of the 2D structure of the streamer head generally and of the electric field and the electron number density partially.

show abstract

Section: Introductionmentioning

confidence: 99%

Subnanosecond spectral diagnostics of streamer discharges: I. Basic experimental results

Shcherbakov¹,

Sigmond

2007

J. Phys. D: Appl. Phys.

View full text Add to dashboard Cite

show abstract

“…Time-Correlated Single Photon Counting Spectroscopy Tomáš Hoder approach was motivated by the results of Gallimberti [18] who used these spectral bands to approach the electron energy in the discharge. Similarly, using the SPS emission the Trichel pulse discharge in low pressure negative corona was investigated by Gravendeel [19]. Using the TC-SPC technique, Gravendeel reached the temporal resolution of 0.7 ns in late 80's.…”

Section: Pos(ecpd2015)008mentioning

confidence: 99%

Time Correlated Single Photon Counting Spectroscopy: Principles And Applications To Single-Filament Discharges

Hoder¹,

Hoeft²,

Gerling³

et al. 2016

Proceedings of 1st EPS Conference on Plasma Diagnostics — PoS(ECPD2015)

View full text Add to dashboard Cite

“…Application of the spatially and time-resolved temporal spectral luminosity waveforms for the determination of the physical parameters in the filamentary streamer head is a complicated inverse problem. Rotational spectra and band intensities of the nitrogen second positive (SPS) and first negative (FNS) emission systems have been successively applied for the determination of neutral gas temperature, electric field and electron number density mainly by a direct method [1][2][3][4][5][6][7][8][9][10][11][12][13][14][15][16][17][18][19][20] with a set of different simplifying assumptions.…”

Section: Introductionmentioning

confidence: 99%

Subnanosecond spectral diagnostics of streamer discharges: II. Theoretical background

Shcherbakov¹,

Sigmond²

2007

J. Phys. D: Appl. Phys.

View full text Add to dashboard Cite

In this second of two papers, we have developed a fully self-consistent method of diagnostics of streamer discharge plasmas based on the analysis of absolute intensities of the second positive (SPS) and first negative (FNS) systems of molecular nitrogen. The theory of the method combines a spectroscopic technique for the calculation of temporal waveforms of the nitrogen absolute SPS and FNS (0, 0)-band emission and a self-consistent semi-analytical parametric axially symmetric 1.5D model of the filamentary streamer head. The spectroscopic technique takes into account characterizations of all units of the measuring spectro-optical channel, including spatiotemporal resolution and resolution in wavelength. Also, chromatic aberrations of the focusing lighting lens, errors in the adjustment of the object image onto the input slit as well as the correction of the slit function at the non-uniformly illuminated input slit of the monochromator on width are taken into account. The model of the streamer head is characterized by some trial-consistent allowable parametric on-axis profile of the electric field combined with the electron and total space charge number density profiles fully self-consistent with each other and with the trial electric field. Additionally, the corresponding 2D configuration for the field and the electron number density is constructed via special ellipse-like geodesic lines. The absolute values and the synchronous ratio of the 1L spatially and time-resolved cross-correlated temporal waveforms of the SPS to the FNS (0, 0)-bands, the ratio of their altitudes and the total emission power for both the waveforms measured in paper I have been taken into account to reconstruct the 2D structure of the streamer head. With a procedure fitting the directly computed output voltage waveforms to the experimental ones, the peak values of the electric field and the electron number density within the streamer head at mid-gap distances have been found to be 430–500 Td and (2–3) × 1014 cm−3, respectively. And the corresponding absolute electric field is thus 70–80 kV cm−1 at the initial gas temperature within the repetitive streamer region of 450 K.

show abstract

Fast photon counting in negative corona discharges in the Trichel regime

Cited by 17 publications

References 6 publications

Subnanosecond spectral diagnostics of streamer discharges: I. Basic experimental results

Subnanosecond spectral diagnostics of streamer discharges: I. Basic experimental results

Time Correlated Single Photon Counting Spectroscopy: Principles And Applications To Single-Filament Discharges

Subnanosecond spectral diagnostics of streamer discharges: II. Theoretical background

Contact Info

Product

Resources

About