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CAS IR Grid
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长春光学精密机械与物... [4]
近代物理研究所 [3]
物理研究所 [1]
数学与系统科学研究院 [1]
上海应用物理研究所 [1]
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OAI收割 [9]
iSwitch采集 [1]
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期刊论文 [6]
会议论文 [4]
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2022 [1]
2021 [1]
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An improved method of bunch-by-bunch beam position calculation in a heavy-ion synchrotron
期刊论文
OAI收割
NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT, 2022, 卷号: 1021, 页码: 9
作者:
Wei, Xiaojuan
;
Li, Min
;
Mao, Ruishi
;
Li, Weilong
;
Chen, Yucong
|
收藏
|
浏览/下载:83/0
|
提交时间:2022/01/07
Beam position monitor
Bunch-by-bunch
Total least square method
Hybrid Regularized Cone-Beam Reconstruction for Axially Symmetric Object Tomography
期刊论文
OAI收割
ACTA MATHEMATICA SCIENTIA, 2021, 页码: 17
作者:
Li, Xinge
;
Wei, Suhua
;
Xu, Haibo
;
Chen, Chong
|
收藏
|
浏览/下载:14/0
|
提交时间:2022/04/02
high-energy X-ray radiography
cone-beam global reconstruction
inverse problem
total variation
alternating proximal gradient method
Improving the creep resistance and tensile property of UHMWPE sheet by radiation cross-linking and annealing
期刊论文
OAI收割
RADIATION PHYSICS AND CHEMISTRY, 2016, 卷号: 125, 期号: -, 页码: 41—49
作者:
Wang, HL
;
Xu, L
;
Li, R
;
Hu, JT
;
Wang, MH
收藏
|
浏览/下载:20/0
|
提交时间:2016/09/12
MOLECULAR-WEIGHT POLYETHYLENE
OXYGEN-INDUCED RADICALS
TOTAL HIP-ARTHROPLASTY
MECHANICAL-PROPERTIES
VITAMIN-E
TRIBOLOGICAL PROPERTIES
ELECTRON-BEAM
LINKED UHMWPE
GAMMA-RAYS
WEAR
Optical system of golay-3 synthetic aperture telescope of Fizeau style (EI CONFERENCE)
会议论文
OAI收割
2010 3rd International Conference on Advanced Computer Theory and Engineering, ICACTE 2010, August 20, 2010 - August 22, 2010, Chengdu, China
作者:
Sun Z.-Y.
收藏
|
浏览/下载:20/0
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提交时间:2013/03/25
In order to get high resolution
the field of view is 4. Analyzed the imaging
a optical system of golay-3 synthetic aperture telescope has been designed which adopt Fizeau multi-telescope frame. The angular magnification of sub-aperture is -4
the fill factor is 113. The configuration of light beam combiner is Cassegrain style added a lens. The total focal length is 6000mm
the PSF have been improved remarkably
and the cut-off frequency of MTF is close to that of full aperture. 2010 IEEE.
Far-field focusing of laser beam based on digital image processing techniques (EI CONFERENCE)
会议论文
OAI收割
Optoelectronic Imaging and Multimedia Technology, October 18, 2010 - October 20, 2010, Beijing, China
作者:
Zhao S.
;
Tian Y.-Z.
;
Liu L.-S.
;
Guo J.
;
Zhang H.-Y.
收藏
|
浏览/下载:28/0
|
提交时间:2013/03/25
In order to lead the laser beam transmit in the atmosphere convergently
an experiment of laser focus at the distance of 450m and 300m has been operated in the outdoor place. The actual manipulations are as follows: Firstly
the laser was collimated by a beam expander
then the near-parallel laser beam was transmitted with a Galileo telescope system
and the distance between the concave lens and the convex lens can be tuned through a precise displacement platform
so the focus of the system changed due to the tiny displacement of the concave lens. Secondly
the average power of the laser spot can be measured using power meter
the power is 47.67mW and the standard deviation is 0.67mW while the focal length is 450m. Thirdly
the energy distribution was found through the laser beam analyzer. The spot images were saved using the beam analyzer
then the saved image can be processed with Matlab software afterwards. The function named EDGE and Sobel operator was used in the pre-processing of the saved image
then method of median filter was used in the course of image de-noising and 53H filter was adopted in the signal analysis. The diameter of laser spot was obtained by the method above
the diameter is 5.56mm and the standard deviation is 0.24mm. The spot center excursion is 0.56mm
it is 10.43% of the total diameter of the laser spot. At last
the key factors of the energy dissipation in the focusing system can be summarized as follows: restriction of the diffraction limit
attenuation in the atmosphere
geometrical aberration of optical system
and the diffraction limit and the geometrical aberration are significant in the three factors above
so we can reduce the impact of the both factors during the design of optical system. The reliable referenced data of the system design can be acquired through the primary experiment research. 2010 SPIE.
The full hemisphere integrating measurement of the reflectance of black cavity (EI CONFERENCE)
会议论文
OAI收割
ICO20: Illumination, Radiation, and Color Technologies, August 21, 2005 - August 26, 2005, Changchun, China
作者:
Wang Y.
;
Yu B.
;
Wang Y.
;
Wang Y.
;
Wang Y.
收藏
|
浏览/下载:21/0
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提交时间:2013/03/25
The conical black cavities are used in the Solar Irradiance Absolute Radiometers (SIARs) of the solar constant monitor aboard on the SZ spaceship and of the Solar Total Irradiance Monitor (STIM) aboard on sun-synchronous polar orbit weather satellites. A low reflectance measurement instrument which is used for making the integrating measurement on the reflectance of the conical black cavity in a high precision within the full hemisphere (include the entrance of the Ulbrichtsphere) has been constructed. The characteristic of the instrument is the employment of a semi-transparent mirror
which is mounted in an inclination angle of 45 degrees in front of the entrance of the Ulbrichtsphere. The incident beam is reflected to the black cavity or white board by the semi-transparent mirror. A portion of those
which is made diffused reflection through the black cavity or white board
is measured by the detector located in the side face of the Ulbrichtsphere
and the other portion which is reflected to the entrance is measured by the other detector
after passing through the semi-transparent mirror
and then being focused on by an ellipsoidal mirror. The two measurement data are added up to get the integrating reflectance within full hemisphere. The presentation and verification on the measurement result of the reflectance of the black cavity and its precision are described in this article. The absolute accuracy can reach 0.012%.
Study on optical parts of MOEMS optical switch with low insertion loss (EI CONFERENCE)
会议论文
OAI收割
MEMS/MOEMS Technologies and Applications II, November 10, 2004 - November 12, 2004, Beijing, China
作者:
Wang W.
;
Wang L.
;
Wang L.
;
Wang L.
;
Chen W.
收藏
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浏览/下载:39/0
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提交时间:2013/03/25
We study insertion losses of optical switch when the laser beam is propagating during the free space between two single mode fibers (SMFs) and the related assemblage challenges
Then a new packaging structure is developed for the hybrid-integration of free-space MOEMS (micro-opto-electro-mechanical systems) chip with a silicon micromachined submount to improve alignment accuracy. The submount is designed to accommodate various free-space MOEMS chips with minimal active optical alignment
thus reducing the packaging cost. The silicon submount has a central recess to place the MOEMS chip in
sixteen V-grooves for optical fibers
and micropits for micro ball lenses
all bulk micromachined at the same time by a single anisotropic wet etching step. A corner compensation technique is employed to prevent erosion of the convex corners
where different geometries meet. Through this assembling method
the fiber
micro ball lens can be aligned preciously thus reduced lateral and angular misalignment between them. Then total insertion losses can be decreased.
Measurement of total cross sections of nuclei produced by Ne-20 bombing at Be-9 target
期刊论文
OAI收割
HIGH ENERGY PHYSICS AND NUCLEAR PHYSICS-CHINESE EDITION, 2002, 卷号: 26, 期号: 7, 页码: 683-689
作者:
Chen, ZQ
;
Wang, M
;
Tian, WD
;
Wang, JS
;
Sun, ZY
|
收藏
|
浏览/下载:19/0
|
提交时间:2010/10/29
total reaction cross section
transmission method
radioactive ion beam
A single charge state ECR ion source
期刊论文
OAI收割
HIGH ENERGY PHYSICS AND NUCLEAR PHYSICS-CHINESE EDITION, 1999, 卷号: 23, 期号: 11, 页码: 1125-1128
作者:
Zhao, YB
;
Liu, ZW
;
Zhao, HW
;
Ding, JZ
;
Cao, Y
|
收藏
|
浏览/下载:21/0
|
提交时间:2011/08/26
electron cyclotron resonance
magnetic configuration
total beam
Scanning tunneling microscopy study of gaas(001) surfaces
期刊论文
iSwitch采集
Applied surface science, 1999, 卷号: 141, 期号: 3-4, 页码: 244-263
作者:
Xue, QK
;
Hashizume, T
;
Sakurai, T
收藏
|
浏览/下载:31/0
|
提交时间:2019/05/09
Gaas
Molecular beam epitaxy
Scanning tunneling microscopy
Reflection high energy electron diffraction
First-principles total energy calculations
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