離子束電流 的英文怎麼說
中文拼音 [lízishùdiànliú]
離子束電流
英文
ion beam current- 離 : Ⅰ動詞1 (離開) leave; part from; be away from; separate 2 (背離) go against 3 (缺少) dispens...
- 子 : 子Ⅰ名詞1 (兒子) son 2 (人的通稱) person 3 (古代特指有學問的男人) ancient title of respect f...
- 束 : Ⅰ動詞1 (捆; 系) bind; tie 2 (控制; 約束)control; restrain Ⅱ量詞(用於捆在一起的東西) bundle;...
- 電 : Ⅰ名詞1 (有電荷存在和電荷變化的現象) electricity 2 (電報) telegram; cable Ⅱ動詞1 (觸電) give...
- 流 : Ⅰ動1 (液體移動; 流動) flow 2 (移動不定) drift; move; wander 3 (流傳; 傳播) spread 4 (向壞...
- 離子 : [物理學] ion
- 電流 : current; galvanic current; electric current; electricity; current flow電流保護裝置 current protec...
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Investigation of plasma drift velocity vs time in intense electron beam diode
強流脈沖電子束二極體等離子體漂移速度的研究The paper mainly focused on the beam transport part of asipp key laboratory of ion beam bioengineering and it ' s component elements, for example, van de graff accelerator, bending magnet, magnetic quadruple lenses, beam shutter, collimator and so on. the laboratory has performed the milestone achievement that is beam passed the hole of lo ^ m diameter in experiments. many experimental results are discussed by theories according to experiments
本文重點討論了中科院離子束生物工程學重點實驗室單粒子束裝置的束流傳輸部分,對主要部件進行了詳細的討論,如:靜電加速器、偏轉磁鐵、磁四極透鏡、束線開關、瞄準器等,實驗中已取得束流穿過10 m小孔的標志性成果,並運用相關理論結合具體實驗分析了實驗結果。Using the two - stream fluid model, the linear dispersion relation is derived assuming a two - dimensional spatial geometry. two cases are considered, one is that the 2d spatial geometry is defined by the plane containing the two counterstreaming electron populations and the perturbation wave vector ( referred as the xy plane ), and the other is that the geometry is defined by the plane being vertical to the two counterstreaming electron populations ( referred as the yz plane )
對高能束流和電子迴流構成的雙流系統,建立冷等離子體流體模型,採用簡正模分析方法,分別考慮擾動波矢在平行於電流傳播方向的平面(記為xy平面)上和在垂直於電流傳播方向的平面(記為yz平面)上這兩種情況,推導了不穩定性的色散關系。With his 1905 analysis, along with subsequent papers, einstein showed that light can behave as a stream of particles ; when it does, it knocks electrons out of the metal in the way a cue ball breaks a billiard rack
在他1905年的分析及隨后的論文里,愛因斯坦說明了光可以像是一束粒子流;如果這樣,它會像撞球時母球撞開排好的球一樣,將電子打離金屬。( 3 ) chapter v. plasma characteristics of rf ion source is investigated. a zero - dimensional numerical dynamic colisional radiative atomic and molecular ( cram ) model is suggested to simulate the microphysical process. all species " population number densities in plasma are calculated in non - thermodynamics equilibrium condition, and proton content in extracted ion current are measured with 60 ? magnetic analyzer
( 3 )提出了高頻離子源等離子體的零維cram模型( collisionalradiativeatomicandmolecularmodel ) ,計算了非平衡態( nte )下等離子體中分子、電子、離子、基態原子、激發態原子等粒子濃度,並在zf - 200kev中子發生器上,用60磁分析器實驗測定了引出束流的質子比。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體magic無法用於模擬等離子體密度遠高於束電子密度的情況。In the hipib strengthening experiments, samples of high - speed steel ( w6mo5cr4v2 ) were irradiated by abstract hipib ( cn + = 30 %, h + = 70 %, ion energy 250 kev, ion current density 60 - 180a / cm2, pulse duration 80 - 100 ns ). microstructure investigation and properties characterization of the treated hss samples were carried out to investigate the effect of current density and pulse number of incident hipib on the surface modification treatment. the physical mechanism of the hipib - solid interaction was established based on the experiments
在hipib轟擊材料表面方面,本文選擇成分由c ~ ( n + ) ( 30 )和h ~ + ( 70 )組成、加速電壓為250kv 、脈沖寬度為80 100ns的hipib對高速鋼( w6mo5cr4v2 )進行表面輻照處理,研究離子束流密度和脈沖次數對高速鋼微觀結構和宏觀性能的影響,探討了hipib與材料表面相互作用的物理機制。High speed water jet special machining utilizes the beam of water with very high dynamic energy to cut materials, therefore it actually belongs to the machining tool of high energy beam
摘要高速水射流特種加工是利用具有很高動能的高速(超音速)水射流束來沖蝕材料,從而實現材料切削,屬于高能束加工范疇,是一種可與激光、等離子體、電子束加工方法媲美的新型切割加工工具。Standard practice for approximate determination of current density of large - diameter ion beams for sputter depth profiling of solid surfaces
固體表面濺射深度仿形加工用大直徑離子束的電流密度近似測定的標準規程It is a modern one in the world with its advantage : fierce current, high electricity state, high purity, lot kinds of ions, reliable, easy operation
Mevva離子注入機突出的優點有:強束流:高電荷態高純度引出離子種類多大面積引出穩定可靠,易操作。There is a part of beam loss during the course as the neutralization of high - energy particles dragged from the ion source, the deflexion of charged particle on the beam stream and the scraped beam of exceeding beam waist and low density. it is necessary to analyze the beam loss and bring forward a rational project for absorbing beam stream
將離子源引出的高能粒子進行中性化,再偏轉掉束流中的帶電粒子,將超過束腰半徑、密度較小的束流削除,在此過程中有一部分束流損失,它直接影響加熱功率的因素,因此,對束流損失進行了分析,對損失束流的吸收提出了吸收方案。The experiment was performed at the accelerator mass spectrometer ( ams ) beam line on hi - 13 tandem accelerator of ciae using the 64cu off - line rnb, so the beam can be analysed and identified by static deflection technique of ams. limited by the deflection capacity of the electrostatic analyser of ams, the maximum incident energy of 64cu beam had to be restricted to 80 mev in the coulex experiment of 64cu off - line rnb
實驗是在中國原子能科學研究院hil串列加速器加速器質譜( ams )管道上完成的,利用ams靜電偏轉技術來分析鑒別束流成份,但是受ams管道靜電分析器偏轉能力的限制,在離線放射性核束中最高只能使用入射能量為80mev的的cu束。The energy calibration is more accuracy and almost constant with the injected energy of proton. however, the energy calibration in e1 detector has a slight decrease with increasing the energy of protons. the reasons are attributed to the non - uniformity in thickness and disturbing from surrounding r, b ray and secondary particles
對氧離子的能量刻度採用的是l八2 . 75的擋別,在能量范圍o一50mev有很好的線性關系,刻度出的每道能量h是1 . 1mev /道,然而當束流能量達到80mev /道時,在e ,探測器中h值與前面能量點的數據符合較好,但在e :探測器中沉積能量高於50mev時,電子學系統進入飽和狀態。In the system, more hole deficiency was supplied by excessive la ions. this increased the concentrations of p - carries, and decreased the bound of crystal lattice field to the carries on the other hand. as a result, the dielectric peak move to lower temperature due to the carries
發現了過量的la離子在體系中引入了較多的空位,一方面p型載流子濃度升高,另一方面使得載流子所受的品格場束縛減小,引起了由載流子導致的介電峰相對于同樣mn含量但la離子不過量的體系而言向低溫方向偏移。The maximum output of ion beam current is obtained at a charging voltage of 8 kv for the magnetic field power system, which is in accordance with the theory of magnetic insulation. the ion beam parameters are an accelerating voltage of 300 kv, an ion current density of 300 a / cm2 with beam pu lse width of 80 ns and with composition of 70 % proton and 30 % carbon ions
在磁場電源電壓為8kv ,獲得了與磁絕緣理論相符的最大離子束流密度輸出,離子束參數為:加速電壓300kv ,離子束流密度300a cm ~ 2 ,離子束脈沖寬度80ns ,成分約為70 h離子和30 c離子。The fast control power supply ( fcps ) of the tokamak is a dc supply with huge capacity to provide rapid magnetic field constraint to the plasma
在托克馬克裝置中對等離子體進行磁約束的快控電源裝置是一個大容量直流電源。At the delay time when the area on the anode surface bombarded by electrons expands to a maximum field, the upper limit of ion beam current output is reached. the ion beam parameters are an accelerating voltage of 220 kv, an ion current density of 350 a / cm2 with beam pulse width of 70 ns and with composition of 30 % proton and 70 % carbon ions
在電子流對陽極轟擊面積達到最大所對應的延遲時間,獲得了最大離子束流密度輸出,離子束參數為: 220kv , 350a cm ~ 2 , 70ns ,成分約為30 h離子和70 c離子,離子束流密度的波動同樣可控制在20 。Improved plasma confinement by modulated toroidal current on ht - 7 superconducting tokamak
7超導托卡馬克調制電流改善等離子體約束分享友人