proton beam造句
例句與造句
- Biological effects and application of proton beam implantation on melon seeds
處理甜瓜種子的輻射生物學(xué)效應(yīng)和利用研究 - What we call a " proton beam " is in fact a succession of squeezed groups of protons called " bunches " . the two lhc beams will consist each of 2835 bunches of 1011 particles each
我們所說(shuō)的“質(zhì)子束”實(shí)際上是連續(xù)的許多被壓縮的質(zhì)子群。這兩個(gè)lhc的粒子束會(huì)有2853個(gè)含有1001個(gè)粒子的群組成。 - The experiment populated the excitation state of 64cu via 64ni ( p , ny ) 64cu * reaction and the lifetime of low - lying excitation state of 64cu were determined via the delayed coincidence method between pulse proton beam and de - excitation y rays detected by ge ( li ) detector
Sns ）與ge （ l ）探測(cè)器測(cè)量退激y射線延遲符合的方法，由時(shí)間譜tof峰的中值移動(dòng)的方法來(lái)確定激發(fā)態(tài)壽命。 - We review the literatures of the clinical feature , pathophysiology , treatment modalities and prognosis of chordomas , and also the newest advances of radiotherapy , including proton beam radiotherapy ( rt ) and heavy charged particles rt ( carbon ions ) for treating chordomas
我們回顧文獻(xiàn)中有關(guān)脊索瘤之臨床表現(xiàn)、病態(tài)生理、治療策略及預(yù)后，并整理放射治療之最新進(jìn)展，包括質(zhì)子治療及重粒子治療如碳離子對(duì)脊索瘤之治療比較。 - One involves the radiation hardening technique of electronic devices aboard on spacecraft for extremely high energy protons with low flux existed in the environment of space ; the other is related to the thermal - mechanical effects of materials under the exposure of high - energy intense - current proton beams
本文主要研究了空間飛行器抗輻射加固研究中涉及的高能質(zhì)子輻射效應(yīng)問題和強(qiáng)流質(zhì)子束輻照引起的熱?力學(xué)效應(yīng)問題。 - It's difficult to find proton beam in a sentence. 用proton beam造句挺難的
- In this paper , the color dipole approach in the target rest frame is presented and the ratio of the drell - yan cross section per nucleon for an 800 gev proton beam incident on a variety of nuclear targets are calculated and the results are compared with fermilab e772 and e866 experimental data . it is shown that without considering the energy loss effect , the calculated results can fit rather well with experimental data
本文介紹了靶靜止系中色偶極模型，用色偶極模型計(jì)算了800gev質(zhì)子與原子核碰撞的drell - yan過程的微分截面比，并與e772和e866實(shí)驗(yàn)結(jié)果進(jìn)行了比較。發(fā)現(xiàn)：不考慮能量損失，只計(jì)及p - a碰撞中的遮蔽效應(yīng)，理論結(jié)果就與實(shí)驗(yàn)符合的很好。 - The calculated results show that , for low energy protons ( energy less than several decade mev ) , the contribution of proton nuclear reaction to energy deposition can be neglected ; while for high energy protons ( energy greater than several hundred mev ) , the great difference appears for the above two cases . this gives us an indication that the contribution of proton nuclear reaction to the energy deposition must be concerned for high - energy protons . the propagation process in material of thermal shock wave induced by high - energy intense - current pulsed proton beam irradiation is calculated for several different proton energies
對(duì)于入射能注量為418 ( j cm ~ 2 )脈沖寬度為0 . 1 s的矩形脈沖強(qiáng)流質(zhì)子束，計(jì)算結(jié)果表明，由于質(zhì)子束能量不同，引起的初始熱激波( 0 . 1 s時(shí)刻的熱激波)有單峰結(jié)構(gòu)，也有雙峰結(jié)構(gòu)，不同能量的強(qiáng)流質(zhì)子束引起的熱激波在傳播的過程中都會(huì)出現(xiàn)明顯的彈性前驅(qū)波。 - The research on the radiation effects of materials induced by high - energy proton irradiation is of important significance in many scientific fields , such as the single event effects of semiconductor components exposed on space , accelerator - driven nuclear energy generator , tritium production by accelerator , intense pulsed ion beam technology , proton radiography , etc . the effects and mechanisms of irradiation vary vastly for different energies and intensities of proton beams
宇宙高能質(zhì)子的單粒子效應(yīng)( see )研究、潔靜核能系統(tǒng)( ads )研究、加速器產(chǎn)氚計(jì)劃( apt ) 、強(qiáng)脈沖離子束( ipib )技術(shù)、質(zhì)子斷層掃描等領(lǐng)域都涉及質(zhì)子輻射效應(yīng)問題。質(zhì)子輻射對(duì)不同的材料會(huì)導(dǎo)致不同的效應(yīng)，開展質(zhì)子輻射效應(yīng)產(chǎn)生的機(jī)制研究，掌握其效應(yīng)規(guī)律，對(duì)于電子學(xué)元器件的抗輻射加固指標(biāo)提出，以及在其他研究中的方案設(shè)計(jì)等都有重要意義。 - In the calculation , the energy deposited in aluminum by proton beams is first calculated by m - c simulation , then a 1 - d elastic - plastic fluid model is used to simulate the following thermal shock wave process as a result of thermal - mechanical effect by proton irradiation . the shape of proton is taken as a rectangle pulse with a width of 0 . 1 microseconds , the energy flux o
對(duì)于3mm的鋁材料，入射粒子束為矩形脈沖(脈寬為0 . 1 s )的情況下，計(jì)算得到了電子束、質(zhì)子束輻照引起鋁材料斷裂的能注量閾值與入射電子束、質(zhì)子束能量的關(guān)系曲線，該曲線存在最小值，分別對(duì)應(yīng)6mev的質(zhì)子束的34 . 7j cm ~ 2和0 . 35mev電子束的42 . 1j cm ~ 2 。 - Radiotherapy of malignant neoplasms with proton beams has been practicing in at least 11 institutes worldwide and has accumulated experience for more than 12 , 000 patients , the tumor control rate and survival rate of cancer patients are much better than conventional radiotherapy while the complication rate is remarkably lower
質(zhì)子射線治療惡性腫瘤經(jīng)世界各國(guó)十馀個(gè)加速器治療研究所一萬(wàn)一千馀例臨床試驗(yàn)，證實(shí)不但對(duì)腫瘤的控制率和癌患存活率可大幅度提高，同時(shí)治療的副作用則相對(duì)降低甚多。 - The calculated results are compared with those given by - literatures , good agreements are achieved . in the calculation of radiation shielding and single event upset ( seu ) , several mono - energy proton beams have been considered . the energy depositions in materiel by protons are calculated and compared for two cases with or without taking proton nuclear reactions into account
對(duì)于不同能量的單能質(zhì)子束，計(jì)算比較了核反應(yīng)對(duì)能量沉積的影響，計(jì)算結(jié)果表明，在低能質(zhì)子入射情況下(能量在幾十mev ) ，可以不考慮核反應(yīng)對(duì)質(zhì)子能量沉積的影響，而在入射質(zhì)子能量達(dá)到幾百mev時(shí)，核反應(yīng)對(duì)質(zhì)子能量沉積的影響不可忽視。