衰變電子 的英文怎麼說
中文拼音 [shuāibiàndiànzi]
衰變電子
英文
decay electron-
The radioactive transformation giving rise to these electrons was known as beta decay.
產生這種電子的放射性變化,稱為衰變。The shape of the electron spectrum in beta decay is not dominated by properties of the matrix element.
衰變的電子譜的形狀不取決于矩陣元的性質。In some kinds of beta decay, a nuclide loses surplus positive charge by emitting a positron ( in the same event, a proton becomes a neutron, and neutrinos are also given off )
以某種貝它衰減,一個核素靠發出一個正電子失去剩餘正電荷(在相同的事件中,一個質子變成一個中子,而且也發射微中子) 。Using the multi - configuration dirac - fock method ( mcdf ), we studied the characteristic of the decay processes of the 4d core excited states of csiv, the low - lying excitation structure of super - heavy element bohrium ( z = 107 ) and the x - ray spectra of the 3d - 4f transitions of highly charged xenon ions in details in this work, by including the electron correlation and the relaxation effects systematically
本論文運用mcdf方法,通過系統考慮電子相關效應和馳豫效應,分別研究了cs離子的4d內殼層激發態衰變動力學特性,超重元素bh ( z = 107 )的低激發態結構以及高離化態氙離子的3d - 4f躍遷產生的x射線譜的結構等問題。The reason to cause this phenomenon is due to the change of electric field in the blue oled to induce the probality of the carrier shifted and the hole - electron recombination zone changed, which was a possible alternative to achieve color display. 3 ) device with the structure of ito / npb / adn : balq3 / alq3 / mg : ag was fabricated. when the balq3 dopant concentration was about 25 mol %, a high performance devcie with luminous efficiency of 1. 0 lm / w, the peak of emission spectrum at 440 nm, the cie coordinate at ( 0. 18, 0. 15 ), and half lifetime of unencapsulated device about 950 hrs was achieved
導致本現象的原因是由於各有機層電場強度的變化影響了空穴和電子的隧穿幾率,從而導致載流子的復合區域發生改變而發出不同顏色的光; 3 )制備了結構為ito / npb / adn : balq3 / alq3 / mg : ag的藍光oled ,空穴阻擋材料balq3的摻入顯著影響了oled的光電性能,當balq3的摻雜濃度為25mol %時, oled的發光效率為1 . 0lm / w ,發光光譜的峰值為440nm ,色純度為( 0 . 18 , 0 . 15 ) ,未封裝器件的半衰期達到了950小時; 4 )在藍光材料adn中摻雜npb 、 balq3和tbp三種材料時,不僅改善了器件的發光亮度和色純度,而且提高了器件的發光效率和壽命。A stream of particles or electromagnetic waves emitted by the atoms and molecules of a radioactive substance as a result of nuclear decay
核衰變產生的微粒或電磁波放射物的原子或分子由於核衰變放出的一束微粒或電磁波Compared with three - level atomic system, the atomic coherence effects in four - level can lead to eit and eia, which depend on the intensity of control light and the relaxation of the fourth level
與三能級原子系統相比,四能級原子相干效應即可導致電磁感應透明的產生,也可產生電磁感應吸收現象,取決于控制光的強度和第四個能級衰變率的大小。We find the decay rate of 7be in be is smaller than that in au. the change of decay rate ( 0. 71 + 0. 32 ) %, indicates that the environment can indeed alter the decay rate, and the electronic affinity is not the only factor affecting the decay rate, so that one has to take the structure of the host materials into account in explaining the change of the decay rate
本工作將反應p + 7li 7be + n產生的7be分別注入至預計電子親和勢相差較大的材料be和au中,測量7be在這兩種材料中的衰變率的變化,發現7be在be中的衰變率要小於在au中的衰變率,其相對變化為( oThe energy level structures of the 4d core excited configuration 4d 5s25p5, final radiative configuration 4d105s25p4 and final auger configurations 4d105s25p3 and 4d105s15p4 of csv ion and all possible decay dynamics processes related to these configurations are all determined by mcdf method. we also compared the present results of radiative transition, oscillator strength and the line width with the results obtained by experimental spectra and the quasi - relativistic configuration interaction method and got a good agreement. we also make prediction for some dominant features of the auger electron spectrum emitted by the auger decay process of the 4d95s25p6 core excited states
論文第三章中詳細的介紹了cs離子的4d內殼層電子激發組態4d ~ 95s ~ 25p ~ 5 、輻射末態4d ~ ( 10 ) 5s ~ 25p ~ 4及auger末態4d ~ ( 10 ) 5s ~ 25p ~ 3和4d ~ ( 10 ) 5s5p ~ 4的能級結構及各種可能的輻射和auger衰變過程,獲得了與已有的實驗結果和相關的半經驗準相對論組態相互作用計算結果相符的輻射躍遷能、振子強度以及線寬,預言了4d ~ 95s ~ 25p ~ 5態的以auger衰變為主的auger電子譜的特性。There are two main factors resulting in fading capacity and poor cyclability, one is the john - teller distortion of mn3 +, and the other is mn dissolution to electrolyte. the main objects of this paper are to resolved these key problems effecting on the performance of batteries. during the research of suppressing jahn - teller distortion, low valence cation ( al 、 mg ) and anion ( f ) doped method are usually adopted
針對limn2o4正極材料在電化學循環過程中發生jahn - teller畸變和mn在電解液中溶解這兩個導致容量衰減和循環性能劣化的關鍵問題,分別採用al 、 mg陽離子摻雜和al / f 、 mg / f陰陽離子復合摻雜兩種措施,對尖晶石結構limn2o4正極材料進行了改性研究。The significant capacity loss of the spinel limn2o4 during cycling hereby prevents its wider use as cathode materials for lithium secondary batteries. there are two main factors resulting in fading capacity and poor cyclability, one is the jahn - teller distortion of mn3 +, and the other is mn dissolution to electrolyte. the main objects of this paper are to resolved these key problems effecting on the performance of batteries
針對limn _ 2o _ 4正極材料在電化學循環過程中發生jahn - teller畸變和mn在電解液中溶解這兩個導致容量衰減和循環性能劣化的關鍵問題,分別採用陰陽離子復合摻雜和尖晶石晶粒表面包裹兩種措施,對尖晶石結構limn _ 2o _ 4正極材料進行了改性研究。The operating principle of the compressed electret micromotor is the variable capacitance. the attenuation time constant of the charges on rotor surface is much longer than the shaping time of electret itself while the rotor is made of electret
扁平駐極體微電機的工作原理是電容可變原理,電機轉子採用駐極體材料製成,轉子表面電荷的衰減時間常數要比駐極體本身形成的周期長得多。Given that code displayed above and a buffer that we can overflow as dissected in the previous installment, how do we combine these two pieces to get the intended result
我們最喜歡的一種方法涉及使用電子geiger計數器,每次當它檢測到放射性衰變時,它就會生成一個脈沖。衰變之間的時間是一個實足的、純粹的隨機部分。This paper has studied the mean attenuation, scattering, and back scattering cross sections of groups of small rotating spheroids about characteristics of microwave scattering when their rotatory axes are oriented at random in any direction in 2d plane and 3d space respectively under the condition of normal distribution, and that those physical quantities are changed with different variance, expectation and wave lengths of incident electromagnetic wave
本文研究旋轉軸方向分別在平面內和空間中隨機取向呈正態分佈時的小旋轉橢球粒子群的平均衰減截面、平均散射截面、平均後向散射截面等微波散射特徵,以及這些物理量隨軸向分佈期望、方差及入射電磁波波長的變化。The pdg discussion of cp violation can be used to supplement the discussion in class, available at cp violation in b decay - standard model predictions ( pdf )
電荷共軛和宇稱破壞的粒子物理資料組討論可作為課上討論的補充,在" b介子衰變的電荷共軛和宇稱破壞標準模型的預測( pdf )處可得。There is 148mah / g theory capacity in spinel limn2o4, which has lots of advantages, such as synthesize method is simple, the price is low, and is friendly to environment. the spinel limn2o4 is perfect substitution of li - ion batteries cathode. but now it has not been commercialized because its capacity fades during the cycle of charge - discharge
Limn2o4具有尖晶石結構,其理論放電容量達148mah / g ,由於制備工藝簡單、價格低廉、對環境友好等,是一種很有應用前景的鋰離子電池正極材料;尖晶石limn2o4正極材料在充放電循環過程中由於錳元素的溶解、晶格發生jahn - teller變形和電解液的氧化分解,使得容量衰減較快,至今未能商業化。A new type of battery based on the radioactive decay of nuclear material is 10 times more powerful than similar prototypes and should last a decade or more without a charge, scientists announced
一種以核子物質放射衰變為基礎的新型電池,電力比類似的原型強上十倍,在不充電的情況下應可維持十年以上,科學家宣布。分享友人