positron spectroscopy 中文意思是什麼
positron spectroscopy
解釋
正電子譜學- positron : n. 【物理學】正子，陽電子，正電子。
- spectroscopy : n. 【物理學】分光術，光譜學。n. -ist
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Abstract : positron spectroscopy is a new and sensitive microanalytical probe for characterization of polymer microstructures. we report recent advances in this area, including studies on the free volume properties, structural transition, miscibility of blending polymers, physical aging, doping of functional polymers, interfacial interaction of multiphase polymers, etc
文摘:簡要介紹了近年來正電子譜學在聚合物微結構研究中的主要應用及進展.大量實驗事實表明，正電子譜學是表徵高聚物微結構的極靈敏方法 -
The as - grown crystals were characterization by cutting and directional, x - ray diffraction, high resolution ohmmeter, ir transmission spectroscopy, visible light absorption spectroscopy, scan electronic microscopy ( sem ) and positron annihilate time technique ( pat ). the ir transmittance of czt single crystals grown with cd - riched is about 53 %, while 23 % with no cd riched
採用解理實驗、 x射線衍射、電學性能測試、紅外透過譜測試、可見光吸收譜測試、 sem蝕坑分析、探測器的試制等分析測試方法，並首次採用正電子湮沒壽命譜分析方法來研究czt單晶體的空位缺陷，綜合表徵了所生長的晶體的質量和性能。 -
In czochralski silicon crystals ( czsi ) through fast neutron irradiation, formation and conversion of defects were investigated using fourier transform infrared spectroscopy ( ftir ), positron annihilation technology ( pat ) and scanning electron microscope ( sem ). the results showed that fast neutron irradiation induced large quantity of metastable defects which can be the capture centers of positron, positron annihilation average lifetime of samples increased with increasing of irradiation dosage. positron annihilation average lifetime of irradiation samples through dosage up to 1 1018 n. cm - 2 tended to constant
本文對直拉硅樣品進行了不同劑量的快中子輻照，在硅中引入大量的亞穩態缺陷，研究這些亞穩態缺陷的形成，並在較寬的溫度范圍內對輻照樣品進行了退火處理，研究退火后亞穩態缺陷的轉化及同硅中氧的相互作用，應用傅立葉變換紅外光譜技術（ ftir ） 、正電子湮沒技術（ pat ）和掃描電鏡（ sem ）進行了測試。 -
Study of compensation defects in undoped semi - insulating inp by positron lifetime spectroscopy
中補償缺陷正電子壽命譜的研究 -
The test looked for two compounds - n - acetyl aspartate and myo - inositol and found their levels could predict which patients developed alzheimer ' s. positron emission tomography, pet magnetic resonance spectroscopy, mrs
格特波特發現，兩種化合物n -乙酰天冬氨酸鹽n - acetyl aspartate和肌醇myo - inositol的水平可以預測出誰會患上老年癡呆癥。
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