x

space charge

uploads/space charge.jpg

space charge 【電子】空間電荷。

【電子】空間電荷。 “space“ 中文翻譯：   n. 1.空間；太空。 2.空隙，空地；場地；(火車輪船 ...“charge“ 中文翻譯：   vt. 1.填；裝(子彈)；充(電)；使飽和；使充滿；堆 ...“charge space“ 中文翻譯：   電荷空間“automatic space charge compensation“ 中文翻譯：   自動空間電荷補償“charge-space symmetry“ 中文翻譯：   荷空對稱性“equivalent space charge“ 中文翻譯：   等效空間電荷“limited space charge accumulation“ 中文翻譯：   限制空間電荷集聚; 限制空間電荷聚積“limited space-charge accumulation“ 中文翻譯：   限制空間電荷積累“limited-space-charge accumulation“ 中文翻譯：   限制空間電荷聚積“longitudinal space charge effect“ 中文翻譯：   縱向空間電荷效應“space charge aberration“ 中文翻譯：   空間電荷像差; 空間電荷象差“space charge accumulation“ 中文翻譯：   空間電荷積累“space charge barrier“ 中文翻譯：   空間電荷勢壘“space charge cloud“ 中文翻譯：   空間電荷云“space charge compensation“ 中文翻譯：   空間電荷補償“space charge current“ 中文翻譯：   空間電荷電流“space charge defocusing“ 中文翻譯：   空間電荷散焦“space charge density“ 中文翻譯：   空間電荷密度“space charge detector“ 中文翻譯：   空間電荷檢測器“space charge distortion“ 中文翻譯：   空間電荷畸變“space charge effect“ 中文翻譯：   空間電荷效應“space charge factor“ 中文翻譯：   電子管導電系數“space charge field“ 中文翻譯：   空間電荷場“space charge free region“ 中文翻譯：   無空間電荷區“space charge grid“ 中文翻譯：   空間電荷柵極

space colony

The mode competition is much improved . it may operated with a large electron beam radius , that means decreasing the space charge effects compared with a smaller radius beam with the same current , hence the rbwo may operated with a low axial guide magnetic field . besides , the rbwo with a sinusoidal corrugated coaxial structure is very easy to manufacture 波紋內導體rbwo具有一些突出優點:同軸結構中內導體的存在使系統的截止頻率顯著升高,使得系統尺寸可比普通波紋波導慢波系統大;具有很大的抑制模式競爭的能力和很高的功率容量;可以采用大半徑電子注,在工作電流不變的情況下空間電荷效應大幅度降低,因而可以工作在低磁場狀態;此種慢波結構內導體上的波紋易于加工。

In order to obtain the tolerance requirement for the magnetic field homogeneity of the solenoids in electron cooling device , the source of the magnetic imperfection and its influence on the transverse temperature of electron beam were investigated by means of numerical simulation , and taking the space charge effect of electron beam into account 摘要分析了直螺線管磁場缺陷的來源，考慮了電子束的空間電荷作用，采用數值方法模擬計算了磁場缺陷對電子束橫向溫度的影響，獲得了電子冷卻裝置中直螺線管磁場的均勻性要求。

One of effective ways of overcoming space charge effect is to fill plasma in high power wave apparatus , by the neutralization between plasma and space charge , the transfer current is going to be largely enhanced , thereby out - power is going to be largely increased . meantime , due to there are many fluctuating modes in plasma , so it is able to bring a new beam - wave interaction mechanism , by it people can invent some new type high power microwave apparatus 高功率微波裝置中的電流密度很大,空間電荷效應強烈,影響了功率的提高,克服空間電荷效應的有效方法是在高功率微波器件中填充等離子體,由于等離子體對空間電荷的中和作用,傳輸電流會大大提高,從而大幅度提高輸出功率,同時由于等離子體中存在多種波動模式,有可能帶來新的注波互作用機制,發展新型的高功率微波器件。

The effects of the higher - order terms on the self - deflection process of photorefractive bright solitons in a crystal are also investigated . compared the results of first - order diffusion term acting alone with both the first - order diffusion term and the higher - order space charge field terms acting together , the screening solitons always bend right , whereas for the self - deflection of the photovoltaic bright solitons and the screening - photovoltaic bright solitons both bending right or left is possible , and it is possible that no self - deflection process occurs 然后考慮到高階擴散項和高階電荷場對明孤子的影響，發現當外電場很強時，與只考慮一階擴散項作用的結果相比，屏蔽明孤子的偏轉量會增大，而光伏和屏蔽光伏明孤子的偏轉量有時會增大有時會減小，在一定條件下也會消失。

To make pic ( particl - in - cell ) simulations . to set up models of guns and magnetic field and simulate them in the vacuum and plasma , respectively . we found that plasma held back part of space charge effects and improved trajectory of electrons . but beam would oscillate and became instable as accretion of plasma density . by simulating again and again , we draw a conclusion magic could n ' t work when plasma density was more by far than beam electron density . at last a four - stage depressed collector was simulated 建立電子槍和聚焦系統模擬模型,分別在真空和填充等離子體條件下進行模擬。發現填充等離子體能補償部分空間電荷效應,改善電子束包絡軌跡,提高電子的流通率,但是隨著等離子體密度的增大,束電子會出現振蕩不穩定性,遺憾的是通過反復多次模擬發現本文所用粒子模擬的代表性軟件magic無法用于模擬等離子體密度遠高于束電子密度的情況。

In respect of sic devices , an analytical model of 6h - sic jfet to well match the experimental results is proposed . the radiation response of sic jfet in room temperature to 300 c is simulated with the analysis for the neutron irradiation effect such as carrier removal , mobility degradation and space charge density decrease 對sicjfet的電參數如電子濃度，遷移率，電阻率和空間電荷區密度在中子輻照下的變化進行了分析，提出了中子輻照下6h - sicjfet的器件模型，利用此模型對sicjfet在室溫和300時的輻照響應進行模擬的結果和實驗值相符。

( 3 ) we explore photorefractive screening solitons and characters of beam transmission in sbn : 61 : cr crystals . the dependence of beam diameter at the crystal output face on applied field is presented . and influences of the limiting space charge field of the crystals on the experimental results are analyzed ( 3 )初步研究了兩塊不同摻cr濃度的sbn 61 cr晶體中的屏蔽型空間孤子效應，以及不同外加直流電場作用下光束在晶體中的傳輸，給出了晶體出射表面處光斑直徑隨外電場的變化曲線，并分析了晶體中空間電荷場的飽和效應對實驗結果的影響。

2 . to design an axial magnetic field . the cathode lies in 0 . 4 - 0 . 7 of peak value of the magnetic field and excursion channel in a uniform magnetic field to suppress space charge effects ; to design transition section between the gun and excursion channel in converse computation . 3 選擇電子槍陰極處于軸向聚焦磁場峰值的0 . 4 - 0 . 7倍處;漂移通道(互作用區)位于均勻軸向聚焦磁場中,以抑制電子束的空間電荷效應;使用反算法設計電子槍和漂移通道之間的過渡區。

The polymer is widely used in fields of electric and electronic insulation , but local fields ( electric fields , mechanical stress ) distortion induced by space charges in polymers will greatly affect properties of polarization , conductance , short - term breakdown and long - term breakdown 聚合物在電氣、電子絕緣中應用極為廣泛，但其中的空間電荷誘導的局部場（電場、力場）畸變，將對極化、電導、短時及長時擊穿特性帶來巨大影響。

Due to different trap depths , physical reactions and chemical reactions , space charge in frp rod materials had different polarities and densities is influenced by temperature evidently , especially between 20 and 40 and between 100 and 120 由于陷阱深度的不同和物理、化學變化的作用，不同溫度下芯棒材料內空間電荷的積聚極性和積聚量不同，特別是在20和40之間以及100和120之間存在明顯變化。

We consider the solid electron beam . the hot dispersion relation including the electron beam space charge effect is obtained in this paper , by series of propagating with using of the boundary condition and combining with the field matching method 考慮實心電子注，分區求出各區慢電磁波的場方程，然后利用邊界條件，用嚴格的場匹配方法，經過一系列的推導得到了考慮空間電荷效應的“熱”色散方程。

Relativistic back wave oscillator ( rbwo ) with a coaxial structure has a big power capacity of system . with large radius electron beam to decrease the space charge effects without usage of high current , hence the rbwo can work well at a lower axial guide magnetic field 同軸返波管具有很大的功率容量,可以采用大半徑電子注,在工作電流不變的情況下空間電荷效應大幅度降低,因而可工作在低磁場狀態。

Due to applying double beams , the velocity spread is lower because of smaller influence of space charge compared with single beam mig . in the interaction region this beam is easy to start oscillation and reject mode competition effectively 與單注磁控注入槍相比,雙注槍可以提供速度零散小、高束流的電子注,在互作用區更容易起振,且能更好的抑制模式競爭。

And some relevant property parameters of waveguides are measured . based on the band transport model , the buildup of space charge field and the light - induced refractive index changes in photorefractive crystals are discussed 首先根據帶輸運模型的動力學方程組，討論了光折變晶體中光致空間電荷場的建立以及由此而產生的折射率變化。

In this paper , space charge distribution in dc composite insulator frp rod materials after negative dc high voltage application was measured by pea method and the results were analyzed and discussed 摘要使用pea法空間電荷測量系統測量了負直流高壓電場作用后復合絕緣子芯棒材料中空間電荷分布，并進行了相關的分析和討論。

Space explorers for charge - particles detecting and those for solar x - ray detecting are kernels of space environment monitoring systems for space charge - particles monitoring and space soft 、 hard x - ray monitoring respectively 本文討論的x射線探測器標定分析系統，主要用于實現對x射線探測器的能譜標定。

Compared with the traditional tto , its start - up current is much less , and its larger cylindrical volume allows a higher space charge limit current 對于在電流臨近空間電荷限制電流和大信號時，徑向電子束與徑向間隙內微波電場的非線性相互作用過程進行了初步的研究。

Space charges is often created by trapping or preventing their movement due to various traps , as a result trap properties decide the store and transport of the charge 空間電荷往往是各類陷阱俘獲和阻止電荷運動造成的，陷阱的性質決定著電荷的存貯和輸運。

Space charge properties of frp rod materials are influenced by temperature , field strength and high voltage application duration 結果表明，在高壓直流電場作用下，芯棒材料內部積累的空間電荷的極性和密度受到溫度、電場強度和電場作用時間等因素的影響。