本文選題：電子 + 導(dǎo)電效應(yīng)　； 參考：《物理學(xué)報(bào)》2017年12期

【摘要】：采用新的具有常數(shù)錐角的玻璃錐管,并對(duì)玻璃錐管進(jìn)行了外表面導(dǎo)電屏蔽,通過(guò)對(duì)電子穿越玻璃錐管的二維角分布隨時(shí)間演化的觀測(cè),研究了低能電子與玻璃管相互作用的機(jī)制.發(fā)現(xiàn)電子穿越完全放電的玻璃錐管時(shí)穿透率先下降后平穩(wěn),整個(gè)過(guò)程中角分布中心發(fā)生微小移動(dòng),但角分布的半高寬幾乎保持不變.這與我們之前發(fā)表的工作(2016 Acta Phys.Sin.65 204103)不同,這是由于對(duì)玻璃錐管進(jìn)行外表面導(dǎo)電屏蔽會(huì)阻止外界不確定的快速充放電的影響,并形成了新的穩(wěn)定放電通道,有利于實(shí)現(xiàn)電子的穩(wěn)定穿透.電子的穿透率隨傾角呈類(lèi)似矩形的分布,透射電子的角分布中心伴隨傾角的變化而移動(dòng),其穿透所容許的傾角與幾何穿透一致.
[Abstract]:A new glass conical tube with a constant cone angle is used to shield the outer surface of the glass cone. The mechanism of the interaction between the low energy electron and the glass tube is studied through the observation of the time evolution of the two-dimensional angular distribution of the electron traversing glass cone tube. It is found that the penetration of the electron through the fully discharged glass cone is the first to fall after the drop. Stable, the angular distribution center in the whole process has little movement, but the half width of the angular distribution is almost constant. This is different from our previous work (2016 Acta Phys.Sin.65 204103), which is due to the effect of the external conductive shielding on the outer surface of the taper tube which will prevent the external undetermined rapid charge and discharge, and form a new stable release. The electrical channel is conducive to the stable penetration of electrons. The penetration rate of electrons is similar to a rectangular distribution with the dip angle. The angular distribution center of the transmission electron moves with the change of the dip angle, and the allowable angle of penetration is consistent with the geometric penetration.
【作者單位】： 蘭州大學(xué)核科學(xué)與技術(shù)學(xué)院;中國(guó)核動(dòng)力研究設(shè)計(jì)院;ETH
【基金】：國(guó)家自然科學(xué)基金(批準(zhǔn)號(hào):11475075)資助的課題~~
【分類(lèi)號(hào)】：O572.322

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1 周利華;低能電子穿越玻璃直管和錐管的動(dòng)力學(xué)研究[D];蘭州大學(xué);2016年

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本文編號(hào)：2043552