Spatio-Temporal Gas Temperature Rise in Repetitive Positive Streamer Corona in Air

Kondo, K; Ikuta, Nobuaki

doi:10.1143/jpsj.59.3203

Cited by 21 publications

(25 citation statements)

References 8 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Our previous work reported that the hybrid nanoneedles array reduces the ionization voltages [20,21]. In the present work, we introduced a single nanowire as the counter electrode, which exhibits several unique advantages over the hybrid nanoneedles including: (1) it allows the gas flow crossing the extremely narrow discharge space (submicron herein) to flow freely, which is hardly possible for the traditional plate-electrode sensor; (2) the diameter of the nanowire is in the order of hundreds of nanometers, which provides a local electrical field convergence effect allowing gaseous ionization at an ultralow voltage; (3) the nanowire suspended above the nanoneedles in the air is subject to fusion locally due to its low thermal conductivity but the high discharge current density in a certain gaseous electronics scenario [32,33,34,35] can function as a special “fuse” for monitoring the change of gas environment. It is believed that the temperature subjected to fusion suffers a rapid temperature rise, which is estimated to be up to 10 3 K order of magnitude in a millisecond [34,35], as detailed in Appendix B.…”

Section: Resultsmentioning

confidence: 99%

“…Based on the previous research about gas–solid thermal transport due to gas discharge [34], the temperature rise herein can be roughly estimated as: T(t)=αβUInVCt where, α : thermal accommodation coefficient from the ionized gas molecules with a mass density n to the nanowire, 2% [35] β : the fraction of energy injected to the gas discharge space from the external circuit, 0.5 [36] U : voltage loaded between the nanowire and the substrate, 3.75 V I : current intensity in the circuit loop, 500 nA (underestimated) n : gas density in the discharge space, for nitrogen in the standard environment, 1.2504 g/L V : volume of the core discharge space, 300 nm × 2.4 μm × 300 nm = 2.16 × 10 −18 m 3 C : gaseous specific heat, for nitrogen, 1.038 J/g/K The temperature rise caused by the gas discharge can be calculated as T ( t ) = 6.69 × 10 6 ∙ t , which means that the segment of nanowire in the vicinity of the Pt nanodot can be heated up to 10 3 K order of magnitude (melting point of silicon) in around 1 millisecond.…”

Section: Figure A1mentioning

confidence: 99%

See 1 more Smart Citation

Single-Nanowire Fuse for Ionization Gas Detection

Liu

Zhu

Han

et al. 2019

Sensors

View full text Add to dashboard Cite

Local electric field enhancement is crucial to detect gases for an ionization gas sensor. Nanowires grown collectively along the identical lattice orientation have been claimed to show a strong tip effect in many previous studies. Herein, we propose a novel ionization gas detector structure by using a single crystalline silicon nanowire as one electrode that is placed above the prepatterned nanotips. A significant improvement of the local electric field in its radical direction was obtained leading to an ultralow operation voltage for gas breakdown. Different from the tip of the nanowire in the reported ionization gas sensors, the gaseous discharge current in this device flows towards the sidewall in the case of a trace amount of gas environment change. Technically, this discharge current brings about a sudden temperature rise followed by a fusion of the silicon nanowire. Such unique fusibility of a single nanowire in this gas detection device suggests a novel architecture that is portable and in-site executable and can be used as an integrated gas environmental monitor.

show abstract

Section: Resultsmentioning

confidence: 99%

Section: Figure A1mentioning

confidence: 99%

Single-Nanowire Fuse for Ionization Gas Detection

Liu

Zhu

Han

et al. 2019

Sensors

View full text Add to dashboard Cite

show abstract

“…Thus, also for streamers in atmospheric pressure air, these emissions have been in focus for a long time as well [15,16,[23][24][25][26][27][28][29]. Mutual delay (or shift) of the SPS and FNS emission signal maxima (i.e.…”

Section: Introductionmentioning

confidence: 99%

“…Typically, the estimation of basic parameters of practically all nitrogen-containing plasmas at different pressures is widely based on the emission of the two above mentioned nitrogen spectral systems [18][19][20][21][22] -dominantly due to the large difference in their excitation potentials. Thus, also for streamers in atmospheric pressure air, these emissions have been in focus for a long time as well [15,16,[23][24][25][26][27][28][29]. Mutual delay (or shift) of the SPS and FNS emission signal maxima (i.e.…”

Section: Introductionmentioning

confidence: 99%

Sub-nanosecond delays of light emitted by streamer in atmospheric pressure air: Analysis of N2(C3Πu) and N2+(B2Σu+) emissions and fundamental streamer structure

Hoder

Bonaventura

Bourdon

et al. 2015

Journal of Applied Physics

View full text Add to dashboard Cite

Both experimental and theoretical analysis of an ultra-short phenomena occurring during the positive streamer propagation in atmospheric pressure air is presented. With tens-of-picoseconds and tens-of-microns precision, it is shown that when the streamer head passes a spatial coordinate, emission maxima from N2 and N + 2 radiative states follow with different delays. These different delays are caused by differences in the dynamics of populating the radiative states, due to different excitation and quenching rates. Associating the position of the streamer head with the maximum value of the selfenhanced electric field, a delay of 160 ps was experimentally found for the peak emission of the first negative system of N + 2 . For the first time, a delay dilatation was observed experimentally on early-stage streamers and clarified theoretically. Thus, in the case of second positive system of N2 the delay can reach as much as 400 ps. In contrast to the highly-nonlinear behaviour of streamer events, it is shown theoretically that emission maxima delays linearly depend on the ratio of the streamer radius and its velocity. This is found to be one of the fundamental streamer features and its use in streamer head diagnostics is proposed. Moreover, radially-resolved spectra are synthetized for selected subsequent picosecond moments in order to visualize spectrometric fingerprints of radial structures of N2(C 3 Πu) and N + 2 (B 2 Σ + u ) populations created by streamer-head electrons.

show abstract

“…Different aspects of discharge plasma diagnostics by relative intensities of the second positive (SPS) and first negative (FNS) systems of molecular nitrogen have been considered in the works [1][2][3][4][5][6][7][8][9][10]. Correct solution of the inverse problem as well as reliable approach to analyse local temporal waveforms, spectra and intensities of both emission systems during primary streamer development have been as yet not published elsewhere.…”

Section: Introductionmentioning

confidence: 99%

Accurate spectroscopic studies of streamer discharges. 2. theoretical background and analysis

Shcherbakov¹,

Nekhamkin²

CEIDP '05. 2005 Annual Report Conference on Electrical Insulation and Dielectric Phenomena, 2005.

View full text Add to dashboard Cite

Theory for diagnostics of the positive primary streamer has been described for providing validation and explanation of the experimental results presented in part 1. Rates and rate constants of electronic processes in primary streamer plasma have been calculated by numerical solution of the steadystate spatially-uniform Boltzmann's kinetic equation for the electron energy distribution function. Principally, they all are the functions only of the local reduced electric field, which is unique free independent parameter for all other variables. Conceptual spatial profile of the reduced electric field within and nearby the streamer head has been constructed based on continuity equations for electrons and positive and negative ions coupled with Poisson's equation in invariant forms. A corresponding profile of the electron number density has been calculated for case of stationary stage of primary streamer propagation. Using nul-dimensional solutions for the population number densities derived in part #1, conjugate one-dimensional spatial profiles for the (0,0) band luminosities of the first negative both the second positive nitrogen systems versus longitudinal (on-axis) coordinate have been calculated. Just these theoretical luminosity profiles are used for determination of the actual reduced electric field and electron number density by fitting to experimental profiles. Its peak value to first approximation is determined using aggregated graphical nomograms versus the reduced electric field.

show abstract

Spatio-Temporal Gas Temperature Rise in Repetitive Positive Streamer Corona in Air

Cited by 21 publications

References 8 publications

Single-Nanowire Fuse for Ionization Gas Detection

Single-Nanowire Fuse for Ionization Gas Detection

Sub-nanosecond delays of light emitted by streamer in atmospheric pressure air: Analysis of N2(C3Πu) and N2+(B2Σu+) emissions and fundamental streamer structure

Accurate spectroscopic studies of streamer discharges. 2. theoretical background and analysis

Contact Info

Product

Resources

About