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• 期刊论文 [22]
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浏览/检索结果: 共24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 Electron-phonon coupling mechanisms of broadband near-infrared emissions from Cr3+ in the Ca3Sc2Si3O12 garnet 期刊论文  OAI收割 PHYSICAL CHEMISTRY CHEMICAL PHYSICS, 2020, 卷号: 22, 期号: 18, 页码: 10343-10350 作者:  Jia, Zhenwei;  Yuan, Chenxu;  Li, Ruiyang;  Sun, Peng;  Dong, Rui   |  收藏  |  浏览/下载：48/0  |  提交时间：2020/12/16 ENERGY-TRANSFER  GREEN PHOSPHOR  LIGHT-SOURCES  PHOTOLUMINESCENCE  LUMINESCENCE  SUBSTITUTION  RADIATION  SPECTRA  IONS   No pulsed radio emission during a bursting phase of a Galactic magnetar 期刊论文  OAI收割 Nature, 2020, 卷号: 587, 页码: 63-65 作者:  HXMT   |  收藏  |  浏览/下载：45/0  |  提交时间：2022/02/08 Astrophysics - High Energy Astrophysical Phenomena  Abstract: Fast radio bursts (FRBs) are millisecond-duration radio transients of unknown physical origin observed at extragalactic distances1-3. It has long been speculated that magnetars are the engine powering repeating bursts from FRB sources4-13, but no convincing evidence has been collected so far14. Recently, the Galactic magnetar SRG 1935+2154 entered an active phase by emitting intense soft íray bursts15. One FRB-like event with two peaks (FRB 200428) and a luminosity slightly lower than the faintest extragalactic FRBs was detected from the source, in association with a soft íray/hard-X-ray flare18-21. Here we report an eight-hour targeted radio observational campaign comprising four sessions and assisted by multi-wavelength (optical and hard-X-ray) data. During the third session, 29 soft-íray repeater (SGR) bursts were detected in íray energies. Throughout the observing period, we detected no single dispersed pulsed emission coincident with the arrivals of SGR bursts, but unfortunately we were not observing when the FRB was detected. The non-detection places a fluence upper limit that is eight orders of magnitude lower than the fluence of FRB 200428. Our results suggest that FRB-SGR burst associations are rare. FRBs may be highly relativistic and geometrically beamed, or FRB-like events associated with SGR bursts may have narrow spectra and characteristic frequencies outside the observed band. It is also possible that the physical conditions required to achieve coherent radiation in SGR bursts are difficult to satisfy, and that only under extreme conditions could an FRB be associated with an SGR burst.   Growth, defects, radiation resistant and optical properties of 30 at% Er:GSAG laser crystal 期刊论文  OAI收割 JOURNAL OF LUMINESCENCE, 2019, 卷号: 205, 页码: 109-114 作者:  Chen, Yuanzhi;  Zhang, Qingli;  Peng, Fang;  Liu, Wenpeng;  Sun, Dunlu   |  收藏  |  浏览/下载：20/0  |  提交时间：2019/01/11 Crystal growth  Chemical etching  2.6-3.0 mu m laser  Radiation resistant property  Spectra   Growth, structure and radiation resistant properties of Er,Pr:GSAG laser crystals 期刊论文  OAI收割 OPTICAL MATERIALS, 2018, 卷号: 84, 页码: 172-177 作者:  Chen, Yuanzhi;  Zhang, Qingli;  Peng, Fang;  Liu, Wenpeng;  He, Yi   |  收藏  |  浏览/下载：49/0  |  提交时间：2019/12/25 Er  Pr  GSAG  Crystal growth  Structure  Radiation resistance  Spectra   Channeling and radiation of 855 MeV electrons and positrons in straight and bent tungsten (110) crystals 期刊论文  OAI收割 NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS, 2018, 卷号: 424, 页码: 26-36 作者:  Shen, H.;  Zhao, Q.;  Zhang, F. S.;  Sushko, Gennady B.;  Korol, Andrei V.   |  收藏  |  浏览/下载：28/0  |  提交时间：2018/07/16 Channeling  Tungsten crystal  Bent crystal  Rechanneling  Dechanneling length  Radiation spectra   Microstructure, hardness and modulus of carbon-ion-irradiated new SiC fiber (601-4) 期刊论文  OAI收割 JOURNAL OF NUCLEAR MATERIALS, 2018, 卷号: 503, 页码: 91-97 作者:  Huang, Q;  Lei, GH;  Liu, RD;  Li, JJ;  Yan, L   |  收藏  |  浏览/下载：21/0  |  提交时间：2018/09/06 Silicon-carbide Fibers  Neutron-irradiation  Matrix Composites  Nicalon Fibers  Raman-spectra  Radiation  Amorphization  Damage  Creep   Femtosecond Laser-Inscribed High-Order Bragg Gratings in Large-Diameter Sapphire Fibers for High-Temperature and Strain Sensing 期刊论文  OAI收割 Journal of Lightwave Technology, 2018, 卷号: 36, 期号: 16, 页码: 3302-3308 作者:  Chen, C.;  Zhang, X. Y.;  Yu, Y. S.;  Wei, W. H.;  Guo, Q.   |  收藏  |  浏览/下载：15/0  |  提交时间：2019/09/17 Femtosecond (fs) laser  fiber Bragg gratings  optical fiber sensors  sapphire fiber  multimode optical-fibers  composite structures  sensor  inscription  radiation  spectra  single  Engineering  Optics  Telecommunications   Study on response function model for γ-ray scintillation detector 期刊论文  OAI收割 ATOMIC ENERGY SCIENCE AND TECHNOLOGY, 2015, 卷号: 49, 期号: 8, 页码: 1354-1358 作者:  Li Z(李哲);  Zhang YW(张译文);  Sun SF(孙世峰);  Wang BY(王宝义);  Wei L(魏龙) 收藏  |  浏览/下载：61/0  |  提交时间：2016/04/18 Detector response  Gamma ray spectra  Gamma-ray energy  Interaction mechanisms  Non-linear parameters  Radiation source  Response function models  Weighted least squares   Properties of ion track in polystyrene irradiated with high energy Fe-56 ions 期刊论文  OAI收割 NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS, 2012, 卷号: 286, 页码: 233-237 作者:  Ma, Mingwang;  Wu, Shengwei;  Lin, Jun;  Sun, Youmei;  Jin, Yunfan   |  收藏  |  浏览/下载：21/0  |  提交时间：2018/07/05 Polystyrene  High Energy Heavy Ion  Ultraviolet-visible Spectra  Radiation Effects  Ion Track   Properties of ion track in polystyrene irradiated with high energy Fe-56 ions 会议论文  OAI收割 作者:  Ma, Mingwang;  Wu, Shengwei;  Lin, Jun;  Sun, Youmei;  Jin, Yunfan   |  收藏  |  浏览/下载：28/0  |  提交时间：2018/08/20 Polystyrene  High energy heavy ion  Ultraviolet-visible spectra  Radiation effects  Ion track