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Transmission measurement of photo-absorption cross section of aluminum in soft X-ray region of 50 to 250eV
synchrotron radiation soft-X-ray aluminum thin-film photo-absorption cross section
2009/8/13
The photo-absorption cross section of aluminum was obtained from the ratio of transmission of aluminum thin-films with different area densities from 50 to 250eV with synchrotron radiation monochromati...
50°视场角投影式头盔光学系统设计及逆反射屏研究
2007/8/20
设计了一款适于医疗培训用投影式头盔物镜系统，出瞳直径8 mm，视场50°，能够满足对角0.9英寸微显示器对超高分辨SXGA模式的显示要求.其结构紧凑，口径10 mm，长度12 mm，重量仅有5 g.本物镜系统场曲仅0.35 D，畸变仅0.64%.为考察本投影式头盔系统的成像特性，研究了不同“逆反射材料”的特性.实验得到高强级逆反射材料在±40°视场范围内反射光强无明显变化，适合做为投影屏幕材料.定...
DWBA of the Reaction 0Be(p, a )6Li at EP = 18.6\sim 50 MeV
Direct mechanism Differential Cross-sections Spectroscopic-factor amplitudes Dependence of the integrated cross-sections on energy
2010/4/9
The compound nucleus produced in the reaction 9Be(p, a)6Li in the incident energy range Ep = 18.6 \sim 50 MeV is mainly occurred when its excitation energy is greater than the a -particle threshold se...
Microwave Rotational Components of the n9= 1 and n 10 = 2 Vibrational Modes of 13CH3CCH Molecule In the Range 16 -- 50 GHz
Microwave spectra Rotational spectra Propyne Interstellar clouds Fermi resonance Vibrational modes
2010/4/12
Some rotational components have been measured in the ground, the n 9 = 1 and the n 10 = 2 vibrational states for 13CH3CCH isotopic species in the frequency range 16--50 GHz. A set of rotational consta...