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	Ion beam sputter deposition of zirconia thin films (EI CONFERENCE) 会议论文 OAI收割 International Symposium on Photoelectronic Detection and Imaging, ISPDI 2007: Optoelectronic System Design, Manufacturing, and Testings, September 9, 2007 - September 12, 2007, Beijing, China 作者: Liu L.; Yang H.; Liu L. 收藏 \| 浏览/下载：20/0 \| 提交时间：2013/03/25 We determined the optical constants (the refractive index n and the extinction coefficient k) of ion beam sputter deposited zirconia thin films with spectroscopic ellipsometry (SE). First we obtained the structure information (the layer thickness surface roughness and layer diffusion) by fitting the grazing x-ray reflection (GXRR) spectra. The fitted surface roughness is verified by atomic force micrometer (AFM) measurement. Second based on the acquired structure information the measured ellipsometry spectra are fitted in the range of 240-800nm at an incident angle of 70.25 degree. The optical constants are solved based on the Tauc-Lorentz dispersion. The optical band gap extracted by SE is 4.79eV. Finally the optical band gap is verified by Taue plot method which is well consistent with that of SE.
	Excitonic properties of vertically aligned ZnO nanotubes under high-density excitation (EI CONFERENCE) 会议论文 OAI收割 Lu Y. M.; Liang H. W.; Shen D. Z.; Zhang Z. Z.; Zhang J. Y.; Zhao D. X.; Liu Y. C.; Fan X. W. 收藏 \| 浏览/下载：13/0 \| 提交时间：2013/03/25 In this paper highly oriented and vertically arranged ZnO nanotubes are prepared on Al2O3 (0 0 0 1) substrate without employing any metal catalysts by plasma-assisted molecular beam epitaxy. The photoluminescence (PL) spectra at room temperature are studied under high excitation densities. Under lower excitation density (60 kW/cm2) PL spectrum shows that one strong free exciton emission (FE) locates at 3.306 eV. As the excitation density increases up to 200 kW/cm2 a new emission peak (Pn) located at low-energy side of FE is attributed to the spontaneous emission due to an exciton-exciton (Ex-E x) scattering process from two ground state excitons where one exciton is recombined by emitting a photon and the other is scattered into the excited states of n=2 3 4.... Under excitation density of 300 kW/cm 2 the stimulated emission originating from Ex-E x scattering is obtained. When the excitation density is above 580 kW/cm2 the emission from electron-hole plasma is observed in low-energy side of the P band and indicates a typical superradiation recombination processes with increasing excitation density. 2006 Elsevier B.V. All rights reserved.
	高能铁核(E≥4GeV/N)与铝核作用截面的测量期刊论文 OAI收割高能物理与核物理, 1984, 期号: 6, 页码: 664-667 作者: 任国孝; 周寅藻; 黄荣庆; 陈鸣远收藏 \| 浏览/下载：23/0 \| 提交时间：2015/12/15 径迹探测器初级宇宙线 eV/N 核粒子铝板宇宙线核重离子加速器高能物理研究电荷分布铂板
	13.9—15.6MeV中子引起的~(65)Cu(n;p)~(65)Ni反应中剩余核反冲平均投影射程的测定期刊论文 OAI收割核化学与放射化学, 1981, 期号: 2, 页码: 113-117 作者: 赵珍兰; 郭应焕; 张元纪; 冯锡璋收藏 \| 浏览/下载：12/0 \| 提交时间：2015/12/25 剩余核 Cu Ni eV n p 投影射程出射粒子中子束复合核角分布