2007 IEEE 34th International Conference on Plasma Science (ICOPS)最新文献_第4页

A Portable Micro-Plasma Plume Source 便携式微等离子体羽流源

2007 IEEE 34th International Conference on Plasma Science (ICOPS) Pub Date : 2007-06-17 DOI: 10.1109/PPPS.2007.4345624

S. Wang, X. Xu, C. Liu, L. Zhao

引用次数: 0

Phase Structural Transitions for Large 2D Dust Clusters in Complex Plasmas 复杂等离子体中大型二维尘埃团的相结构转变

2007 IEEE 34th International Conference on Plasma Science (ICOPS) Pub Date : 2007-06-17 DOI: 10.1109/PPPS.2007.4346156

K. Qiao, T. Hyde

{"title":"Phase Structural Transitions for Large 2D Dust Clusters in Complex Plasmas","authors":"K. Qiao, T. Hyde","doi":"10.1109/PPPS.2007.4346156","DOIUrl":"https://doi.org/10.1109/PPPS.2007.4346156","url":null,"abstract":"Summary form only given. The field of complex plasmas has witnessed almost exponential growth since the discovery in 1994 of the self-assembly of ordered structures (Coulomb crystals) within a controlled lab environment. Recently there has been enormous interest in the static and dynamic behavior of 2- and 3D dust clusters consisting of a finite number of charged, ordered dust grains within a horizontal confinement. Both the resulting structures and the dynamic behavior of such small dust clusters (N<100) is now under intense investigation. It has recently been shown employing a numerical simulation that under certain conditions a structural phase transition can occur, reordering a 2D dust crystal from one exhibiting hexagonal lattice structure to that showing a spherical structure consisting of concentric rings. Such phase transitions appear to occur preferentially within the outer layers of larger dust clusters, where the Debye length and the confining potential both vary in a manner which is not yet completely understood. This paper examines such structural phase transitions, analyzing them quantitatively. Experimental data are also compared to simulation results.","PeriodicalId":446230,"journal":{"name":"2007 IEEE 34th International Conference on Plasma Science (ICOPS)","volume":"91 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-06-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123861205","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Correlation between the secondary electron emission coefficient of MgO protective layer and luminous efficiency in Alternating Current Plasma Display Panel (AC- PDP) 交流等离子体显示面板(AC- PDP)中MgO保护层二次电子发射系数与发光效率的相关性

2007 IEEE 34th International Conference on Plasma Science (ICOPS) Pub Date : 2007-06-17 DOI: 10.1080/15421400903240571

E. Park, S. Jung, C. Son, K. B. Song, M. W. Moon, P. Oh, B. Hong, E. Choi

引用次数: 1

Low-Energy Pulsed Electron Beam Technique for Microbial Inactivation 微生物灭活的低能脉冲电子束技术

2007 IEEE 34th International Conference on Plasma Science (ICOPS) Pub Date : 2007-06-17 DOI: 10.1109/PPPS.2007.4345785

P. Chalise, K. Matak, J. Jaczynski, E. Hotta

{"title":"Low-Energy Pulsed Electron Beam Technique for Microbial Inactivation","authors":"P. Chalise, K. Matak, J. Jaczynski, E. Hotta","doi":"10.1109/PPPS.2007.4345785","DOIUrl":"https://doi.org/10.1109/PPPS.2007.4345785","url":null,"abstract":"A recent multi state outbreak of pathogenic bacteria in fresh foods highlighted the fundamental need to introduce a novel, next generation and highly efficient microbial intervention techniques to deal with such outbreaks and to reduce biological threats. There is increasing demand for compact, non-thermal antimicrobial techniques for household use, yet such techniques are currently lacking. Therefore, we propose a novel antimicrobial technique, which is based on low-energy high-power pulsed electron beam that is referred to as secondary emission electron gun (SEEG). The technique produces a low-energy (<100 keV), high power (180 KW), and short duration (5 mus) pulsed electron beam for nonthermal surface decontamination of microbes1. Our experimental investigation proves SEEG as a viable antimicrobial technique for inactivation of non-pathogenic stains of E. coli JM 109 as well as both vegetative and spores of Bacillus subtilis RB 14 (B. Subtilis) on nutrient agar plate1,2. The D10-values calculated from the survivor curves for E. coli subjected to a single (0.0031 Gy) or five electron beam pulses (0.0271 Gy) suggests SEEG as a highly efficient next generation antimicrobial intervention technique 3. In this paper, we cover a brief review on existing conventional non-thermal antimicrobial techniques and highlight on our preliminary investigations of elucidating mechanism of inactivation by low energy pulsed electron beam. We further discuss our research initiative with SEEG which is significant in light of the recent outbreaks implicating fresh, leafy vegetables, likely spinach, contaminated with E. coli 0157:H7, or peanut butter contaminated with Salmonella.","PeriodicalId":446230,"journal":{"name":"2007 IEEE 34th International Conference on Plasma Science (ICOPS)","volume":"25 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-06-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121370537","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Non-Equilibrium Dielectric Barrier Discharge Plasma Promoting Apoptotic Behavior in Melanoma Skin Cancer Cells 非平衡介质阻挡放电等离子体促进黑色素瘤皮肤癌细胞凋亡行为

2007 IEEE 34th International Conference on Plasma Science (ICOPS) Pub Date : 2007-06-17 DOI: 10.1109/PPPS.2007.4345578

G. Fridman, S. Kalghatgi, A. Fridman, A. Gutsol, V. Vasilets, G. Friedman, R. Sensenig, A. Shereshevsky, M. Balasubramanian, M. Jost, A. Brooks

引用次数: 6

Time Resolved Analysis of the Expansion of Isochoricly Heated Thin Foils 等长波加热薄箔膨胀的时间分辨分析

2007 IEEE 34th International Conference on Plasma Science (ICOPS) Pub Date : 2007-06-17 DOI: 10.1109/PPPS.2007.4346084

D. Gautier, M. Schmitt, K. Flippo, J. Fernández, B. Hegelich, J. Fuchs

引用次数: 0

Experimental Study on a 0.5 GW Relativistic Backward Wave Oscillator (RBWO) 0.5 GW相对论后向波振荡器(RBWO)的实验研究

2007 IEEE 34th International Conference on Plasma Science (ICOPS) Pub Date : 2007-06-17 DOI: 10.1109/PPPS.2007.4345568

H. Jung, S. Min, S. Shin, G. Park, J. Kim, Y.S. Lee, J. So

引用次数: 0

Mode Switching in a Gyrotron with Azimuthally Corrugated Resonator 具有方位波纹谐振腔的回旋管模式切换

2007 IEEE 34th International Conference on Plasma Science (ICOPS) Pub Date : 2007-06-17 DOI: 10.1109/PPPS.2007.4345720

G. Nusinovich, O. Sinitsyn, T. Antonsen

{"title":"Mode Switching in a Gyrotron with Azimuthally Corrugated Resonator","authors":"G. Nusinovich, O. Sinitsyn, T. Antonsen","doi":"10.1109/PPPS.2007.4345720","DOIUrl":"https://doi.org/10.1109/PPPS.2007.4345720","url":null,"abstract":"Summary form only given. When in a gyrotron the resonator wall is azimuthally corrugated with the number of azimuthal variations twice the azimuthal index of the operating mode, such corrugation provides the coupling between the waves rotating azimuthally in opposite directions and leads to formation of standing wave patterns. Such cosine and sine modes have different frequencies and their frequency separation is proportional to the corrugation amplitude. The coupling between two such standing modes depends on the radius of an electron beam. In particular, it is possible to choose such beam radius that the coupling is strong (that means that single-mode oscillations of either mode are stable), but, when the gyrotron operates near the boundary between the strong and weak coupling, it can be easily switched from one mode to another with the use of low-power driver. This sort of operation can be used for dynamic suppression of neoclassical tearing modes in large tokamaks and stellarators (a so-called AC method of NTM stabilization'). For this application, the frequency of switching from the first mode to the second and back should correspond to the rotational frequency of magnetic islands. When the frequency separation of standing modes is much larger than the width of mode resonances, omega/Q , such gyrotron can improve reliability of the narrow-band frequency diplexer proposed \" for directing the gyrotron wave beam to one of two output channels providing the NTM stabilization.","PeriodicalId":446230,"journal":{"name":"2007 IEEE 34th International Conference on Plasma Science (ICOPS)","volume":"16 4S3","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-06-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"113975491","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 5

Carbon Nanotube Metal Cathode for Microwave and mm Wave Device 微波和毫米波器件用碳纳米管金属阴极

2007 IEEE 34th International Conference on Plasma Science (ICOPS) Pub Date : 2007-06-17 DOI: 10.1109/PPPS.2007.4345480

M. Chung, Bohr‐Ran Huang, Chih-chia Chang

{"title":"Carbon Nanotube Metal Cathode for Microwave and mm Wave Device","authors":"M. Chung, Bohr‐Ran Huang, Chih-chia Chang","doi":"10.1109/PPPS.2007.4345480","DOIUrl":"https://doi.org/10.1109/PPPS.2007.4345480","url":null,"abstract":"Summary form only given. Field Emission cathode possesses certain advantages over the rmionic emission cathode: smaller FWHM of emission energy, smaller size, no need for filament heating power supply, an d possibility of higher pulsed current. The small field emission energy spread and small size are particularly important as frequency goes up into mm, sub-mm or THz regime in devices like Clinotron or Orotron, where a sheet beam interacts with periodic grating at inclined or parallel trajectory. Carbon nanotube (CNT) has been known for its field emission property. We present a new method to make CNT cathode by hot-bonding CNT with BGA balls on metal surface. This method differs from the spray or print approach in the past, and delivers better adhesion capability in high field. Turn on field (at 1 muA/cm2) as low as 1 V/mum has been achieved, field enhancement factor beta reaches 3900, and dynamic resistance is about 1.28 MOmega at current below 1 mA. Four 0.5 mm2 emission sites emit 0.1 mA current at 400 V bias with 200 mum cathode-anode distance. Current increases as BGA density multiplies. This cathode can be made into various shapes, and defective ball can be repaired through reflow process. Spatial uniformity of emission sites can also be achieved with special emission site shielding structure at the expense of applied field.","PeriodicalId":446230,"journal":{"name":"2007 IEEE 34th International Conference on Plasma Science (ICOPS)","volume":"40 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-06-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114699783","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Static Discharges to a Dust Covered CRT Provides a Clue to Crater Formation on Planetary Bodies 尘埃覆盖的阴极射线管的静电放电为行星上陨石坑的形成提供了线索

2007 IEEE 34th International Conference on Plasma Science (ICOPS) Pub Date : 2007-06-17 DOI: 10.1109/PPPS.2007.4346242

Z. D. Parker

引用次数: 0