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浏览/检索结果: 共30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提交时间升序提交时间降序作者升序作者降序发表日期升序发表日期降序 The influence of Tm3+ to enhance 2.7 mu m mid-infrared emission of Er3+ in CaLaGa3O7 crystal 期刊论文  OAI收割 LASER PHYSICS LETTERS, 2021, 卷号: 18, 期号: 6, 页码: 5 作者:  Liu, Yunyun;  Pan, Fei;  Wang, Xihu;  Gao, Ju   |  收藏  |  浏览/下载：47/0  |  提交时间：2021/05/22 Er3+/Tm3+:CaLaGa3O7  spectroscopic characteristics  energy transfer mechanisms  MIR emission   The influence of Tm3+ to enhance 2.7 μm mid-infrared emission of Er3+ in CaLaGa3O7 crystal 期刊论文  OAI收割 Laser Physics Letters, 2021, 卷号: 18, 期号: 6 作者:     |  收藏  |  浏览/下载：28/0  |  提交时间：2022/08/13 Er3+/Tm3+:CaLaGa3O7  spectroscopic characteristics  energy transfer mechanisms  MIR emission   Two components model for TeV gamma-ray emission from extreme high-energy BL Lac objects 期刊论文  OAI收割 ASTROPHYSICS AND SPACE SCIENCE, 2021, 卷号: 366, 期号: 4, 页码: 11 作者:  Dong, Q.;  Zheng, Y. G.;  Yang CY(杨初源)   |  收藏  |  浏览/下载：38/0  |  提交时间：2021/05/17 gamma-ray emission  high-energy radiation mechanisms  non-thermal  BL Lacertae objects   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：28/0  |  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.   Photoacoustic identification of laser-induced microbubbles as light scattering centers for optical limiting in a liquid suspension of graphene nanosheets 期刊论文  OAI收割 NANOSCALE, 2020, 卷号: 12, 期号: 13, 页码: 7109-7115 作者:  Zhang, Qiuhui;  Qiu, Yi;  Lin, Feng;  Niu, Chao;  Zhou, Xufeng   |  收藏  |  浏览/下载：41/0  |  提交时间：2020/12/16 ABSORPTION  OXIDE  DISPERSIONS  NONLINEARITY  DIFFRACTION  MECHANISMS  EMISSION  BEHAVIOR  PLASMA  POWER   How can FAST improve study of the pulsar emission mechanism and magnetospheric dynamics? 期刊论文  OAI收割 RESEARCH IN ASTRONOMY AND ASTROPHYSICS, 2019, 卷号: 19, 期号: 2, 页码: 10 作者:  Wang, Hong-Guang;  Qiao, Guo-Jun;  Du, Yuan-Jie;  Lu, Ji-Guang;  Xu, Ren-Xin   |  收藏  |  浏览/下载：17/0  |  提交时间：2020/03/10 pulsars: general  pulsars: radio emission  radiation mechanisms: non-thermal   Investigation of N behavior during coal pyrolysis and oxidation using ReaxFF molecular dynamics 期刊论文  OAI收割 FUEL, 2018, 卷号: 233, 页码: 867-876 作者:  Zheng, Mo;  Li, Xiaoxia;  Guo, Li   |  收藏  |  浏览/下载：43/0  |  提交时间：2018/10/11 Reaxff Molecular Dynamics  Coal Pyrolysis  Coal Oxidation  Nox Emission  Nitrogen Transformation  Reaction Mechanisms   MULTI-FREQUENCY RADIO PROFILES OF PSR B1133+16: RADIATION LOCATION AND PARTICLE ENERGY 期刊论文  OAI收割 Astrophysical Journal, 2016, 卷号: 816, 期号: 2, 页码: 76 作者:  Lu, J. G.;  Du, Y. J.;  Hao, L. F.;  Yan, Z.;  Liu, Z. Y.   |  收藏  |  浏览/下载：29/0  |  提交时间：2019/12/09 acceleration of particles  pulsars: general  pulsars: individual (PSR  B1133+16)  radiation mechanisms: non-thermal  INVERSE COMPTON-SCATTERING  GAMMA-RAY EMISSION  PULSAR EMISSION  FREQUENCY-DEPENDENCE  ANNULAR GAP  EMPIRICAL-THEORY  CRAB PULSAR  ICS  MODEL  BEAMS  CORE  Astronomy & Astrophysics   Efficient Tailoring of Upconversion Selectivity by Engineering Local Structure of Lanthanides in NaxREF3+x Nanocrystals 期刊论文  OAI收割 JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 2015, 卷号: 137, 期号: 20, 页码: 6569—6576 作者:  Dong, H;  Sun, LD;  Wang, YF;  Ke, J;  Si, R 收藏  |  浏览/下载：25/0  |  提交时间：2015/12/09 LUMINESCENT NANOPARTICLES  ENERGY-TRANSFER  LI+ IONS  IN-VIVO  EMISSION  NAYF4-YB  YB3+  ENHANCEMENT  NANOPROBES  MECHANISMS  ER   Modeling the spectral energy distribution of 3C 454.3 in a "flat" broad-line region scenario 期刊论文  OAI收割 PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF JAPAN, 2014, 卷号: 66, 期号: 5 作者:  Lei MC(雷买昌);  Wang JC(王建成) 收藏  |  浏览/下载：19/0  |  提交时间：2016/04/06 radiation mechanisms: non-thermal  galaxies: active  quasars: emission lines