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• 金属研究所 [2]
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• 长春光学精密机械与物... [1]
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• OAI收割 [10]

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• 期刊论文 [8]
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• 2021 [1]
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浏览/检索结果: 共10条，第1-10条 帮助 条数/页： 5101520253035404550556065707580859095100 排序方式： 请选择题名升序题名降序发表日期升序发表日期降序提交时间升序提交时间降序作者升序作者降序 Detection of Flare Multiperiodic Pulsations in Mid-ultraviolet Balmer Continuum, Lyl Hard X-Ray, and Radio Emissions Simultaneously 期刊论文  OAI收割 The Astrophysical Journal, 2021, 卷号: 921, 页码: 179 作者:  HXMT   |  收藏  |  浏览/下载：32/0  |  提交时间：2022/02/08 Solar flares  Solar oscillations  Solar ultraviolet emission  Solar  x-ray emission  Solar radio emission  1496  1515  1533  1536  1522  Astrophysics - Solar and Stellar Astrophysics  Abstract: Quasi-periodic pulsations (QPPs), which usually appear as temporal pulsations of the total flux, are frequently detected in the light curves of solar/stellar flares. In this study, we present the investigation of nonstationary QPPs with multiple periods during the impulsive phase of a powerful flare on 2017 September 6, which were simultaneously measured by the Hard X-ray Modulation Telescope (Insight-HXMT), as well as the ground-based BLENSW. The multiple periods, detected by applying a wavelet transform and Lomb-Scargle periodogram to the detrended light curves, are found to be ~20-55 s in the Ly`and mid-ultraviolet Balmer continuum emissions during the flare impulsive phase. Similar QPPs with multiple periods are also found in the hard X-ray emission and low-frequency radio emission. Our observations suggest that the flare QPPs could be related to nonthermal electrons accelerated by the repeated energy release process, i.e., triggering of repetitive magnetic reconnection, while the multiple periods might be modulated by the sausage oscillation of hot plasma loops. For the multiperiodic pulsations, other generation mechanisms could not be completely ruled out.   Efficient computation of ultraviolet radiation from bow shock waves 会议论文  OAI收割 The 29th International Symposium on Rarefied Gas Dynamics, 中国陕西西安, 2014-07-13 作者:  Zhang YH(张羽淮);  Wan T(万田);  Jiang JZ(蒋建政);  Fan J(樊菁) 收藏  |  浏览/下载：28/0  |  提交时间：2015/09/10 ultraviolet  emissions  Stokes  hydroxyl  Navier  DSMC  negligible  briefly  details  assumption   Simultaneous Enhanced Ultraviolet, Visible and Infrared Emissions in Er3+-Yb3+:TiO2 by Li+ Codoping 期刊论文  OAI收割 CHINESE JOURNAL OF INORGANIC CHEMISTRY, 2011, 卷号: 27, 期号: 4, 页码: 776-780 作者:  Cao Bao-Sheng;  He Yang-Yang;  Feng Zhi-Qing;  Song Miao;  Dong Bin   |  收藏  |  浏览/下载：13/0  |  提交时间：2019/04/09 er3+-yb3+:Tio2  Li++++ Codoping  Crystal Field Symmetry  Ultraviolet  Visible And Infrared Emissions   Energy transition between Yb3+-Tm3+-Gd3+ in Gd3+, Yb3+ and Tm3+ Co-doped fluoride nanocrystals (EI CONFERENCE) 会议论文  OAI收割 17th International Conference on Dynamical Processes in Excited States of Solids, DPC'10, June 20, 2010 - June 25, 2010, Argonne, IL, United states 作者:  Zhang J.;  Zhang J.;  Zhang J. 收藏  |  浏览/下载：26/0  |  提交时间：2013/03/25 YF3: 20%Gd3+  20%Yb3+  0.5%Tm3+ nanocrystal has been synthesized by a hydrothermal method. The upconversion (UC) emission and energy transfer progresses between Gd3+-Yb 3+-Tm3+ under a 980-nm continuous wave semiconductor laser diode excitation have been explored. The experimental results show that the violet and ultraviolet (UV) enhancement with Tm3+ upconversion emission occurs in the nanocrystal  and in the same time the UC emissions of Gd3+ from 6D9/2  6IJ  6P5/2  and 6P7/2 states to the ground state 8S7/2 are obtained  too. The dynamic analysis implies that  under 980-nm excitation  the nanocrystal dimension plays a key role in the efficient energy transfer processes between Gd3+-Yb 3+-Tm3tt based on the energy matching conditions. 2011 Published by Elsevier B.V.   Solar stereoscopy - where are we and what developments do we require to progress? 期刊论文  OAI收割 ANNALES GEOPHYSICAE, 2009, 卷号: 27, 期号: 7, 页码: 2925-2936 作者:  Wiegelmann, T.;  Inhester, B.;  Feng, L. 收藏  |  浏览/下载：21/0  |  提交时间：2016/09/27 Solar physics, astrophysics,and astronomy  Corona and transition region  Magnetic fields  Ultraviolet emissions   Characterization and optical properties of ZnO nanoparticles obtained by oxidation of Zn nanoparticles 期刊论文  OAI收割 Materials Letters, 2009, 卷号: 63, 期号: 29, 页码: 2533-2535 Z. H. Wang; D. Y. Geng; Z. Han; Z. D. Zhang 收藏  |  浏览/下载：27/0  |  提交时间：2012/04/13 Semiconductors  Nanomaterials  Optical materials and properties  X-ray  techniques  Defects  zinc-oxide  growth  photoluminescence  ultraviolet  nanowires  nanotubes  emissions  layer   Far ultraviolet auroral imager 期刊论文  OAI收割 Science in China Series E-Technological Sciences, 2009, 卷号: 52, 期号: 12, 页码: 3709-3714 付利平; 王咏梅; 王英鉴; 张仲谋; 吕建功 收藏  |  浏览/下载：42/0  |  提交时间：2014/04/30 far ultraviolet  auroral morphology  image  emissions  atmosphere  spacecraft   The dependence of plasma density in the topside ionosphere on the solar activity level 期刊论文  OAI收割 ANNALES GEOPHYSICAE, 2007, 卷号: 25, 期号: 6, 页码: 1337-1343 作者:  Liu, L.;  Wan, W.;  Yue, X.;  Zhao, B.;  Ning, B.   |  收藏  |  浏览/下载：34/0  |  提交时间：2018/09/26 solar physics, astrophysics, and astronomy  ultraviolet emissions  ionosphere  plasma temperature and density  solar radiation and cosmic ray effects   The dependence of plasma density in the topside ionosphere on the solar activity level 期刊论文  OAI收割 ANNALES GEOPHYSICAE, 2007, 卷号: 25, 期号: 6, 页码: 1337-1343 作者:  Liu, L.;  Wan, W.;  Yue, X.;  Zhao, B.;  Ning, B.   |  收藏  |  浏览/下载：18/0  |  提交时间：2018/09/26 solar physics, astrophysics, and astronomy  ultraviolet emissions  ionosphere  plasma temperature and density  solar radiation and cosmic ray effects   Effects of annealing and dopant concentration on the optical characteristics of ZnO : Al thin films by sol-gel technique 期刊论文  OAI收割 Physica B-Condensed Matter, 2006, 卷号: 382, 期号: 1-2, 页码: 201-204 S. W. Xue; X. T. Zu; W. G. Zheng; M. Y. Chen; X. Xiang 收藏  |  浏览/下载：25/0  |  提交时间：2012/04/14 ZnO thin films  PL  sol-gel  annealing  absorption spectra  transmittance  oxide-films  photoluminescence  green  enhancement  ultraviolet  substrate  emissions  oxidation  si