Cd1 - xznxte single crystal with good crystallinity has been grown by the descending ampoule with rotation method - before this , high - purity cd1 - xznxte polycrystal materials have been synthesized from 6n gd zn te in the same ampoule . on the basis of this , we deeply explore method of detector fabrication . and we also studied the level and density of traps in detector . gold , indium and c have been deposited as electrodes on polished and chemically etched surfaces of samples with the sizes from 5 5 1 to 10 10 1 . 5mm to compare different contact technologies . the behavior of detector ' s leakage current with temperature and leakage current with time were studied as well as th current - voltage characteristics to deduce the level and density of trap in detectors 我們利用熔體溫度振蕩法在石英安瓿中將6n的單質(zhì)cd 、 zn 、 te合成多晶原料,用坩鍋旋轉(zhuǎn)下降法在同一安瓿中生長出尺寸為20 40mm的cd _ ( 1 - x ) zn _ xte晶體。在此基礎(chǔ)上對碲鋅鎘探測器的工藝進(jìn)行了較深入的研究,制作了厚1 ? 1 . 5mm的探測器,測試了c 、 in 、 au等不同金屬的電極接觸性能,并在國內(nèi)首次通過測試器件的i ? v 、 i ? t曲線、弛豫特性和電容特性對電阻率、陷阱能級、陷阱濃度進(jìn)行了分析,同時測得的~ ( 241 ) am源的能譜。
Aim to the special model nc bend tube , use the modeling method that essential parameter drive product sample model ; 3 ) in the foundation that summing up a rule of optimized welding assembly underside of tube , develop the nc bend tube welding underside optimization design tool , then complete the optimization design united with two application methods : rotation method and the least squares method ; 4 ) propose a design method of nc bend tube welding jig bottom base , then establish model storehouse according to the design rules , and endow the foundation model with assembly feature 針對多數(shù)通用型數(shù)控導(dǎo)管,運(yùn)用矢量轉(zhuǎn)換算法反求得導(dǎo)管關(guān)鍵特征,并據(jù)此創(chuàng)建導(dǎo)管模型,針對特殊造型數(shù)控導(dǎo)管,使用關(guān)鍵參數(shù)驅(qū)動產(chǎn)品庫樣本模型的方法完成建模; 3 )在歸納總結(jié)了焊接底面創(chuàng)建規(guī)則的基礎(chǔ)上,開發(fā)數(shù)控導(dǎo)管焊接底面優(yōu)化設(shè)計(jì)工具,分別應(yīng)用旋轉(zhuǎn)法和最小二乘法兩類方法完成底面的優(yōu)化設(shè)計(jì); 4 )提出了一種數(shù)控導(dǎo)管焊接底座設(shè)計(jì)方法。
The rotation method is a concept used by the philosopher S?ren Kierkegaard in Either/Or to describe the mechanism used by higher level aesthetes in order to avoid boredom. The method is an essential hedonistic aspect of the aesthetic way of life.