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(wèn)題和強(qiáng)流質(zhì)子束輻照引起的熱?力學(xué)效應(yīng)問(wèn)題。