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上海光学精密机械研究... [3]
长春光学精密机械与物... [2]
高能物理研究所 [2]
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期刊论文 [9]
会议论文 [2]
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Chemistry [1]
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Lattice Thermal Transport in the Homogeneous Cage-Like Compounds Cu3VSe4 and Cu3NbSe4: Interplay between Phonon-Phase Space, Anharmonicity, and Atomic Mass
期刊论文
OAI收割
CHEMPHYSCHEM, 2021, 页码: 7
作者:
Yang, Dingfeng
;
Yang, Junzhu
;
Quan, Xuejun
;
Zhang, Bin
;
Wang, Guoyu
  |  
收藏
  |  
浏览/下载:33/0
  |  
提交时间:2021/12/23
cage-like compounds
phonon-phase space
Gruneisen parameters
third-order force constant
lattice thermal conductivity
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:44/0
  |  
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 distances
1-3
. It has long been speculated that magnetars are the engine powering repeating bursts from FRB sources
4-13
, but no convincing evidence has been collected so far
14
. Recently, the Galactic magnetar SRG 1935+2154 entered an active phase by emitting intense soft íray bursts
15
. 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 flare
18-21
. 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.
Time and frequency transfer using BDS-2 and BDS-3 carrier-phase observations
期刊论文
OAI收割
IET RADAR SONAR AND NAVIGATION, 2019, 卷号: 13, 期号: 8, 页码: 1249-1255
作者:
Zhang, Pengfei
;
Tu, Rui
;
Zhang, Rui
;
Liu, Na
;
Gao, Yuping
  |  
收藏
  |  
浏览/下载:21/0
  |  
提交时间:2021/11/29
clocks
Global Positioning System
geodesy
atomic clocks
time transfer
geodetic distance time links
time dilution
averaging time intervals
BDS-3 solution
HOB2-KAT1 time link
satellite tracking geometry
CEDU-KAT1 time link
BDS-2 constellation
BDS-2 satellites
global satellite navigation system
current regional BDS-2
BDS-3e
third-generation BeiDou navigation satellite system
BDS-3 carrier-phase observations
frequency transfer
Impact of spatial modulation on the third harmonic wave propagation and far-field focal spot in frequency conversion system
期刊论文
OAI收割
optik, 2014, 卷号: 125, 期号: 14, 页码: 3628
作者:
Sun, M. Z.
;
Zhang, J. Y.
;
Zhang, Y. L.
;
Bi, Q. Y.
;
Xie, X. L.
收藏
  |  
浏览/下载:23/0
  |  
提交时间:2016/11/28
Nonlinear optics
High power laser
Third harmonic generation
Phase modulation
Amplitude modulation
Impact of spatial modulation on the third harmonic wave propagation and far-field focal spot in frequency conversion system
期刊论文
OAI收割
optik, 2014, 卷号: 125, 期号: 14, 页码: 3628
作者:
Sun, M. Z.
;
Zhang, J. Y.
;
Zhang, Y. L.
;
Bi, Q. Y.
;
Xie, X. L.
收藏
  |  
浏览/下载:16/0
  |  
提交时间:2016/11/28
Nonlinear optics
High power laser
Third harmonic generation
Phase modulation
Amplitude modulation
Route of delivering 40-fs ultra-short laser pulses for gating photoconductive antenna in fiber-coupled terahertz time-domain spectroscopy
期刊论文
OAI收割
optical engineering, 2012, 卷号: 51, 期号: 8, 页码: 085001
作者:
Liu, Jia
;
Fan, Wen-Hui
;
Chen, Long-Chao
收藏
  |  
浏览/下载:35/0
  |  
提交时间:2013/07/08
terahertz time-domain spectroscopy
group velocity dispersion
third-order dispersion
self-phase modulation
photoconductive antenna
High-performance soft x-ray spectromicroscopy beamline at SSRF (EI CONFERENCE)
会议论文
OAI收割
作者:
Xue C.
;
Chen J.
;
Wang Y.
;
Wang Y.
;
Wang Y.
收藏
  |  
浏览/下载:32/0
  |  
提交时间:2013/03/25
The Shanghai Synchrotron Radiation Facility (SSRF) is the first third-generation synchrotron facility in China and operated at an electron energy of 3.5 GeV. One of the seven beamlines in the first construction phase is devoted to soft x-ray spectromicroscopy and is equipped with an elliptically polarized undulator light source
a plane grating monochromator
and a scanning transmission x-ray microscope end station. Initial results reveal the high performance of this beamline
with an energy resolving power estimated to be over 10 000 at the argon L-edge and a spatial resolution better than 30 nm. 2010 American Institute of Physics.
An intelligent method for early design and decision of space payload (EI CONFERENCE)
会议论文
OAI收割
2010 1st IEEE International Conference on Progress in Informatics and Computing, PIC 2010, December 10, 2010 - December 12, 2010, Shanghai, China
作者:
Han C.-S.
;
Wen M.
收藏
  |  
浏览/下载:21/0
  |  
提交时间:2013/03/25
This paper is concerned with the design and decision method of space payload in the early design phase. The objective is to develop a generalized intelligent framework to assist designers in designing space payload. A multi-level method is introduced
which is based on the combination of case-based reasoning (CBR)
multicriteria rough sets theory (MRST) and kernel-based self-organizing maps (KSOM). The first is CBR module
which aims to help designers to obtain some similar cases of the new situation. The second is MRST module
which can extract the decision rules of configuration seletion. The third is KSOM module
which can reduce the variable range and design space of the space payload. The results demonstrate the effectiveness of the proposed design method. 2010 IEEE.
Formation of super-concentrated hydrochloric acid in the third phase in tertiary amine N235-ptCl(6)(2-)-HCl system and its influences on the Pt microemulsion extraction
期刊论文
OAI收割
SCIENCE IN CHINA SERIES B-CHEMISTRY, 2009, 卷号: 52, 期号: 11, 页码: 1825-1834
作者:
Huang Kun
;
Chen Jing
;
Zhang ChengFeng
;
Li ZhiHong
;
Pan QingHua
  |  
收藏
  |  
浏览/下载:15/0
  |  
提交时间:2019/04/09
Solvent Extraction
Third Phase
Super-concentrated Hydrochloric Acid
Tertiary Amine
Platinum
Formation of super-concentrated hydrochloric acid in the third phase in tertiary amine N235-ptCl(6)(2-)-HCl system and its influences on the Pt microemulsion extraction
期刊论文
OAI收割
SCIENCE IN CHINA SERIES B-CHEMISTRY, 2009, 卷号: 52, 期号: 11, 页码: 1825-1834
作者:
Huang, K
;
Chen, J
;
Zhang, CF
;
Li, ZH
;
Pan, QH
收藏
  |  
浏览/下载:25/0
  |  
提交时间:2016/06/29
solvent extraction
third phase
super-concentrated hydrochloric acid
tertiary amine
platinum