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Study of the response of 10B-doped MCP to wide-energy range neutrons from eV to MeV

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Nuclear Science and Techniques 2024年第8期35卷 132-141页

作者： Qiang li li‑Jiao Wang Xiang‑Biao Qiu jing‑wen li wei Xu tao li Ze‑Bin lin Chang‑Jun Ning Yong‑hao Chen Rui‑Rui Fan Kang sun jing‑Yu Tang Rong zhang Han‑tao jing Bo Mei Qi An hao‑Fan Bai Jiang‑Bo Bai Jie Bao Ping Cao Qi‑Ping Chen Zhen Chen Zeng‑Qi Cui An‑Chuan Fan Chang‑Qing Feng Fan‑Zhen Feng Ke‑Qing Gao Min‑hao Gu Chang‑Cai Han Zi‑Jie Han Guo‑Zhu He Yong‑cheng He Yang Hong Yi‑wei Hu Han‑Xiong huang wei‑hua Jia hao‑Yu Jiang wei Jiang Zhi‑Jie Jiang Zheng‑Yao Jin ling Kang Bo li Chao li Gong li Jia‑wen li Xiao li Yang li Jie liu Rong liu Shu‑Bin liu Guang‑yuan Luan Bin‑Bin Qi Jie Ren Zhi‑Zhou Ren Xi‑Chao Ruan zhao‑Hui Song Zhi‑xin Tan Sheng‑Da Tang Peng‑cheng Wang zhao‑Hui Wang Zhong‑wei wen Xiao‑Guang Wu Xuan Wu li‑Kun Xie Yi‑wei Yang Han Yi Yong‑Ji Yu Guo‑Hui zhang lin‑hao zhang Mo‑Han zhang Qi‑wei zhang Xian‑Peng zhang Yu‑liang zhang Yue zhang Zhi‑Yong zhang Mao‑yuan zhao Lu‑Ping Zhou Zhi‑hao Zhou Ke‑Jun Zhu Institute of High Energy Physics Chinese Academy of Sciences(CAS)Beijing 100049China Spallation Neutron Source Science Center Dongguan 523803China State Key Laboratory of Particle Detection and Electronics Institute of High Energy PhysicsChinese Academy of SciencesBeijing 100049China Dongguan Songshan Lake Future School Dongguan 523808China North Night Vision Science&Technology(Nanjing)Research Institute Co.Ltd. Nanjing 211106China Sino‑French Institute of Nuclear Engineering and Technology Sun Yat-sen UniversityZhuhai 519082China School of Nuclear Science and Technology University of Science and Technology of ChinaHefei 230027China State Key Laboratory of Particle Detection and Electronics University of Science and Technology of ChinaHefei 230026China Department of Modern Physics University of Science and Technology of ChinaHefei 230026China State Key Laboratory of Nuclear Physics and Technology School of PhysicsPeking UniversityBeijing 100871China Institute of Nuclear Physics and Chemistry China Academy of Engineering PhysicsMianyang 621900China Key Laboratory of Nuclear Data China Institute of Atomic EnergyBeijing 102413China USTC Archaeometry Lab University of Science and Technology of ChinaHefei 230026China Northwest Institute of Nuclear Technology Xi’an 710024China University of Chinese Academy of Sciences Beijing 100049China

Neutron-sensitive microchannel plates(nMCPs)have applications in neutron detection,including energy spectrum measurements,neutron-induced cross sections,and neutron imaging.10B-doped MCPs(B-MCPs)have attracted significant attention owing to their potential for exhibiting a high neutron detection efficiency over a large neutron energy *** spatial and temporal resolutions are useful for neutron energy-resolved ***,their practical applications still face many technical *** this study,a B-MCP with 10 mol%10B was tested for its response to wide-energy neutrons from eV to MeV at the Back-n white neutron source at the China Spallation Neutron *** neutron detection efficiency was calibrated at 1 eV,which is approximately 300 times that of an ordinary MCP and indicates the success of 10 B *** factors that caused the reduction in the detection efficiency were simulated and *** neutron energy spectrum obtained using B-MCP was compared with that obtained by other measurement methods,and showed very good consistency for neutron energies below tens of *** response is more complicated at higher neutron energy,at which point the elastic and nonelastic reactions of all nuclides of B-MCP gradually become *** is beneficial for the detection of neutrons,as it compensates for the detection efficiency of B-MCP for high-energy neutrons.

关键词： Neutron radiation image 10B-doped MCP Neutron response Wide-energy range neutrons

Towards the full realization of the RIBLL2 beam line at the HIRFL-CSR complex

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Science Bulletin 2018年第2期63卷 78-80页

作者： Bao-hua sun Jian-wei zhao Xue-Heng zhang li-Na Sheng Zhi-Yu sun Isao Tanihata Satoru Terashima Yong Zheng li-hua Zhu li-Min Duan liu-Chun He Rong-Jiang Hu Guang-Shuai li wen-Jian lin wei-Ping lin Chuan-Ye liu Zhong liu Chen-Gui Lu xin-wen Ma li-Jun Mao Yi Tian Feng Wang Meng Wang Shi-tao Wang Jia-wen Xia Xiao-Dong Xu Hu-Shan Xu Zhi-Guo Xu Jian-cheng Yang Da-Yu Yin you-Jin yuan wen-Long Zhan Yu-Hu zhang Xiao-Hong Zhou School of Physics and Nuclear Energy Engineering Beihang University Beijing 100191 China International Research Center for Nuclei and Particles in the Cosmos Beijing 100191 China Institute of Modern Physics Chinese Academy of Sciences Lanzhou 730000 China

More than 99%of the mass in the visible universe—the material that makes up ourselves,our planet,stars—is in the atomic *** the matter has existed for billions of years,only over the past few decades have we had the tools and the knowledge necessary to get a basic understanding of the structure and dynamic of *** physicists around the world have made tremendous strides by initiating a broad range of key

关键词： HIRFL-CSR 横梁建筑群排队原子核物理学家试验性世界

The In-Flight Realtime Trigger and Localization Software of GECAM

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Research in Astronomy and Astrophysics 2024年第10期24卷 11-24页

作者： Xiao-Yun zhao Shao-lin Xiong Xiang-Yang wen xin-Qiao li Ce Cai Shuo Xiao Qi Luo wen-Xi Peng Dong-Ya Guo Zheng-hua An Ke Gong Jin-yuan liao Yan-Qiu zhang Yue huang Lu li xing wen fei zhang jing Duan Chen-wei Wang Dong-li Shi Peng zhang Qi-Bin Yi Chao-Yang li Yan-Bing Xu Xiao-hua liang Ya-Qing liu Da-li zhang Xi-Lei sun Fan zhang Gang Chen huan-Yu Wang Sheng Yang Xiao-jing liu Min Gao Mao-Shun li Jin-Zhou Wang xing Zhou Yi zhao Wang-Chen Xue Chao Zheng Jia-Cong liu xing-Bo Han Jin-ling Qi Jia huang Ke-Ke zhang Can Chen Xiong-tao Yang Dong-Jie Hou Yu-Sa Wang Rui Qiao Xiang Ma Xiao-Bo li Ping Wang xin-Ying Song li-Ming Song Shi-Jie Zheng Bing li Hong-Mei zhang Yue Zhu wei Chen Jian-Jian He Zhen zhang Jin Hou Hong-Jun Wang Yan-Chao hao Xiang-Yu Wang Zong-yuan Yang Zhi-Long wen Zhi Chang yuan-yuan Du Rui Gao Xiao-fei Lan Yan-Guo li Gang li Xu-Fang li Fang-Jun Lu Hong Lu Bin Meng Feng Shi Hui Wang Hui-Zhen Wang Yu-Peng Xu Jia-wei Yang Xue-Juan Yang Shuang-Nan zhang Chao-Yue zhang cheng-Mo zhang Zhi-cheng Tang cheng cheng Key Laboratory of Particle Astrophysics Institute of High Energy PhysicsChinese Academy of SciencesBeijing 100049China University of Chinese Academy of Sciences Chinese Academy of SciencesBeijing 100049China School of Information Science and Technology Southwest Jiaotong UniversityChengdu 611756China Key Laboratory of Stellar and Interstellar Physics and Department of Physics Xiangtan UniversityXiangtan 411105China Physics and Space Science College China West Normal UniversityNanchong 637002China Department of Astronomy Beijing Normal UniversityBeijing 100875China Innovation Academy for Microsatellites of CAS Shanghai 201203China Changchun University of Science and Technology Changchun 130022China Chinese Academy of Sciences South America Center for Astronomy National Astronomical ObservatoriesCASBeijing 100101China

Realtime trigger and localization of bursts are the key functions of GECAM,an all-sky gamma-ray monitor launched on 2020 December *** developed a multifunctional trigger and localization software operating in the CPU of the GECAM Electronic *** onboard software has the following features:high trigger efficiency for real celestial bursts with a suppression of false triggers caused by charged particle bursts and background fluctuation,dedicated localization algorithm optimized for both short and long bursts,and low time latency of the trigger information which is downlinked through the Global Short Message Communication service of the global BeiDou navigation *** paper provides a detailed description of the design and development of the trigger and localization software system for *** covers the general design,workflow,the main functions,and the algorithms used in the *** paper also includes on-ground trigger tests using simulated gamma-ray bursts generated by a dedicated X-ray tube,as well as an overview of the performance for real celestial bursts during its in-orbit operation.

关键词： telescopes instrumentation:detectors methods:observational

In-beam gamma rays of CSNS Back-n characterized by black resonance filter

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Nuclear Science and Techniques 2024年第10期35卷 149-160页

作者： Jin-cheng Wang Jie Ren wei Jiang Xi-Chao Ruan Ying-Yi liu hao-Lan Yang Kuo-Zhi Xu xin-Yi Pan Qi sun Jie Bao Han-Xiong huang hao-Fan Bai Jiang-Bo Bai Ping Cao Qi-Ping Chen Yong-hao Chen wen-hao Duan An-Chuan Fan Rui-Rui Fan Chang-Qing Feng Min-hao Gu Chang-Cai Han Zi-Jie Han Guo-Zhu He Yong-cheng He Yang Hong Yi-wei Hu Zhi-Jie Jiang ling Kang Chang-lin Lan Bo li Feng li Qiang li Xiao li Yang li Jie liu Rong liu Shu-Bin liu Yi-Na liu Guang-yuan Luan Chang-Jun Ning Yi-Jia Qiu wen-Kai Ren Zhi-Zhou Ren zhao-Hui Song Kang sun Zhi-xin Tan jing-Yu Tang Sheng-Da Tang li-Jiao Wang Peng-cheng Wang zhao-Hui Wang Zhong-wei wen Xiao-Guang Wu Xuan Wu Ze-Peng Wu Cong Xia li-Kun Xie Han Yi tao Yu Yong-Ji Yu Guo-Hui zhang Hang-Chang zhang Qi-wei zhang Xian-Peng zhang Yu-liang zhang Zhi-Yong zhang Mao-yuan zhao Zhi-hao Zhou Ke-Jun Zhu Chong Zou Key Laboratory of Nuclear Data China Institute of Atomic EnergyBeijing 102413China Institute of High Energy Physics Chinese Academy of Sciences(CAS)Beijing 100049China Spallation Neutron Source Science Center Dongguan 523803China State Key Laboratory of Nuclear Physics and Technology School of PhysicsPeking UniversityBeijing 100871China Institute of Modern Physics Fudan UniversityShanghai 200433China State Key Laboratory of Particle Detection and Electronics University of Science and Technology of ChinaHefei 230026China School of Nuclear Science and Technology University of Science and Technology of ChinaHefei 230026China Institute of Nuclear Physics and Chemistry China Academy of Engineering PhysicsMianyang 621900China Department of Modern Physics University of Science and Technology of ChinaHefei 230026China USTC Archaeometry Lab University of Science and Technology of ChinaHefei 230026China State Key Laboratory of Particle Detection and Electronics Institute of High Energy Physics Chinese Academy of SciencesBeijing 100049China Northwest Institute of Nuclear Technology Xi’an 710024China University of Chinese Academy of Sciences Beijing 100049China School of Nuclear Science and Technology Lanzhou UniversityLanzhou 730000China Institute of Advanced Technology University of Science and Technology of ChinaHefei 230027China

The back-streaming white-neutron beamline(Back-n)of the China Spallation Neutron Source is an essential neutronresearch platform built for the study of nuclear data,neutron physics,and neutron *** types of cross-sectional neutron-reaction measurements have been performed at Back-n since early *** measurements have shown that a significant number of gamma rays can be transmitted to the experimental stations of Back-n along with the neutron *** gamma rays,commonly referred to as in-beam gamma rays,can induce a non-negligible experimental background in neutron-reaction *** the characteristics of in-beam gamma rays is important for understanding the experimental ***,measuring in-beam gamma rays is challenging because most gamma-ray detectors are sensitive to neutrons;thus,discriminating between neutron-induced signals and those from in-beam gamma rays is *** this study,we propose the use of the black resonance filter method and a CeBr_(3) scintillation detector to measure the characteristics of the in-beam gamma rays of *** types of black resonance filters,^(181)Ta,^(59)Co,^(nat)Ag,and^(nat)Cd,were used in this *** time-of-flight(TOF)technique was used to select the detector signals remaining in the absorption region of the TOF spectra,which were mainly induced by in-beam gamma *** energy distribution and flux of the in-beam gamma rays of Back-n were determined by analyzing the deposited energy spectra of the CeBr_(3) scintillation detector and using Monte Carlo *** on the results of this study,the background contributions from in-beam gamma rays in neutron-reaction measurements at Back-n can be reasonably evaluated,which is beneficial for enhancing both the experimental methodology and data analysis.

关键词： In-beam gamma rays Back-n CeBr_(3)scintillator Black filter resonance technique

Measurement of the ^(232)Th(n,f)cross section in the 1-200 MeV range at the CSNS Back-n

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Nuclear Science and Techniques 2023年第8期34卷 142-153页

作者： Zhi-Zhou Ren Yi-wei Yang Yong-hao Chen Rong liu Bang-Jiao Ye Jie wen Hai-Rui Guo Zi-Jie Han Qi-Ping Chen Zhong-wei wen wei-li sun Han Yi xing-Yan liu tao Ye Jiang-Bo Bai Qi An Jie Bao Yu Bao Ping Cao hao-Lei Chen Zhen Chen Zeng-Qi Cui Rui-Rui Fan Chang-Qing Feng Ke-Qing Gao Xiao-Long Gao Min-hao Gu Chang-Cai Han Guo-Zhu He Yong-cheng He Yang Hong Yi-wei Hu Han-Xiong huang Xi-Ru huang hao-Yu Jiang wei Jiang Zhi-Jie Jiang Han-tao jing ling Kang Bo li Chao li Jia-wen li Qiang li Xiao li Yang li Jie liu Shu-Bin liu Ze Long Guang-yuan Luan Chang-Jun Ning Meng-Chen Niu Bin-Bin Qi Jie Ren Xi-Chao Ruan zhao-Hui Song Kang sun Zhi-Jia sun Zhi-xin Tan jing-Yu Tang xin-Yi Tang Bin-Bin Tian li-Jiao Wang Peng-cheng Wang zhao-Hui Wang Xiao-Guang Wu Xuan Wu li-Kun Xie Xiao-Yun Yang li Yu tao Yu Yong-Ji Yu Guo-Hui zhang lin-hao zhang Qi-wei zhang Xian-Peng zhang Yu-liang zhang Zhi-Yong zhang Lu-Ping Zhou Zhi-hao Zhou Ke-Jun Zhu Department of Modern Physics University of Science and Technology of ChinaHefei 230026China Institute of Nuclear Physics and Chemistry China Academy of Engineering PhysicsMianyang 621900China Institute of High Energy Physics Chinese Academy of Sciences(CAS)Beijing 100049China Spallation Neutron Source Science Center Dongguan 523803China Institute of Applied Physics and Computational Mathematics Beijing 100088China State Key Laboratory of Particle Detection and Electronics University of Science and Technology of ChinaHefei 230027China Key Laboratory of Nuclear Data China Institute of Atomic EnergyBeijing 102413China School of Nuclear Science and Technology University of Science and Technology of ChinaHefei 230027China State Key Laboratory of Nuclear Physics and Technology School of PhysicsPeking UniversityBeijing 100871China State Key Laboratory of Particle Detection and Electronics Institute of High Energy PhysicsChinese Academy of SciencesBeijingChina Northwest Institute of Nuclear Technology Xi’an 710024China University of Chinese Academy of Sciences Beijing 100049China Department of Engineering and Applied Physics University of Science and Technology of ChinaHefei 230026China

The ^(232)Th(n,f)cross section is very important in basic nuclear physics and applications based on the Th/U fuel *** the time-of-flight method and a multi-cell fast-fission ionization chamber,a novel measurement of the^(232)Th(n,f)cross sec-tion relative to^(235)U in the 1–200 MeV range was performed at the China Spallation Neutron Source Back-n white neutron source(Back-n).The fission event-neutron energy spectra of^(232)Th and^(235)U fission cells were measured in the single-bunch *** 232Th/235U fission cross-sectional ratios were obtained,and the measurement uncertainties were 2.5–3.7%for energies in the 2–20 MeV range and 3.6–6.2%for energies in the 20–200 MeV ***^(232)Th(n,f)cross section was obtained by introducing the standard cross section of^(235)U(n,f).The results were compared with those of previous theoreti-cal calculations,measurements,and *** measured 232Th fission cross section agreed with the main evaluation results in terms of the experimental uncertainty,and 232Th fission resonances were observed in the 1–3 MeV *** present results provide^(232)Th(n,f)cross-sectional data for the evaluation and design of Th/U cycle nuclear systems.

关键词： 232Th(n f)cross section Fast-fission ionization chamber Back-n white neutron source

The Large Sky Area Multi-Object Fiber Spectroscopic Telescope (LAMOST)

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Research in Astronomy and Astrophysics 2012年第9期12卷 1197-1242页

作者： Xiang-Qun Cui Yong-Heng zhao Yao-Quan Chu Guo-Ping li Qi li li-Ping zhang Hong-Jun Su Zheng-Qiu Yao Ya-Nan Wang Xiao-Zheng xing xin-Nan li Yong-Tian Zhu Gang Wang Bo-Zhong Gu A-li Luo xin-Qi Xu Zhen-Chao zhang Gen-Rong liu hao-Tong zhang De-hua Yang Shu-Yun Cao Hai-yuan Chen Jian-Jun Chen Kun-xin Chen Ying Chen Jia-Ru Chu Lei Feng Xue-fei Gong Yong-Hui Hou Hong-Zhuan Hu Ning-Sheng Hu Zhong-wen Hu Lei Jia Fang-hua Jiang Xiang Jiang Zi-Bo Jiang Ge Jin ai-hua li Yan li Ye-Ping li Guan-Qunliu Zhi-Gang liu Huo-Ming Shi Zheng-Hong Tang Qing-Sheng tao Xiang-Yan yuan Chao Zhai jing zhang Yan-Xia zhang Yong zhang Ming zhao Fang Zhou Guo-hua Zhou Jie Zhu Si-cheng Zou National Astronomical Observatories Chinese Academy of Sciences Beijing 100012 China yzhao @ *** Nanjing Institute of Astronomical Optics and Technology National Astronomical ObservatoriesChinese Academy of Sciences Nanjing 210042 China University of Science and Tecfinologyof China Hefei 230026 China Shanghai Astronomical Observatory Chinese Academy of Sciences Shanghai 200030 China Institute of Architecture Design and Research Chinese Academy of Sciences Beijing 100190China

The Large Sky Area Multi-Object Fiber Spectroscopic Telescope (LAMOST, also called the Guo Shou jing Telescope) is a special reflecting Schmidt telescope. LAMOST’s special design allows both a large aperture (effective aperture of 3.6 m–4.9 m) and a wide field of view (FOV) (5°). It has an innovative active reflecting Schmidt configuration which continuously changes the mirror’s surface that adjusts during the observation process and combines thin deformable mirror active optics with segmented active optics. Its primary mirror (6.67m×6.05 m) and active Schmidt mirror (5.74m×4.40 m) are both segmented, and composed of 37 and 24 hexagonal sub-mirrors respectively. By using a parallel controllable fiber positioning technique, the focal surface of 1.75 m in diameter can accommodate 4000 optical fibers. Also, LAMOST has 16 spectrographs with 32 CCD cameras. LAMOST will be the telescope with the highest rate of spectral acquisition. As a national large scientific project, the LAMOST project was formally proposed in 1996, and approved by the Chinese government in 1997. The construction started in 2001, was completed in 2008 and passed the official acceptance in June 2009. The LAMOST pilot survey was started in October 2011 and the spectroscopic survey will launch in September 2012. Up to now, LAMOST has released more than 480 000 spectra of objects. LAMOST will make an important contribution to the study of the large-scale structure of the Universe, structure and evolution of the Galaxy, and cross-identification of multiwaveband properties in celestial objects.

关键词： techniques: wide field telescope - active optics - multi fiber - spectroscopy survey - data reduction

Timing analysis of the black hole candidate EXO 1846–031 with Insight-HXMT monitoring

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Research in Astronomy and Astrophysics 2021年第3期21卷 193-204页

作者： He-xin liu Yue huang Guang-cheng Xiao Qing-Cui Bu Jin-Lu Qu Shu zhang Shuang-Nan zhang Shu-Mei Jia Fang-Jun Lu Xiang Ma lian tao wei zhang li Chen li-Ming Song Ti-Pei li Yu-Peng Xu Xue-Lei Cao Yong Chen Cong-Zhan liu Ce Cai Zhi Chang Gang Chen Tian-Xiang Chen Yi-Bao Chen Yu-Peng Chen wei Cui wei-wei Cui jing-Kang Deng Yong-wei Dong yuan-yuan Du Min-Xue Fu Guan-hua Gao He Gao Min Gao Ming-Yu Ge Yu-Dong Gu Ju Guan cheng-cheng Guo Da-wei Han Jia Huo Lu-hua Jiang wei-Chun Jiang jing Jin Yong-Jie Jin ling-Da Kong Bing li cheng-Kui li Gang li Mao-Shun li wei li Xian li Xiao-Bo li Xu-Fang li Yang-Guo li Zheng-wei li Xiao-hua liang jing-yuan liao Bai-Sheng liu Guo-Qing liu Hong-wei liu Xiao-jing liu Yi-Nong liu Bo Lu Xue-Feng Lu Qi Luo tao Luo Bin Meng Yi Nang Jian-Yin Nie Ge Ou Na Sai Ren-cheng Shang xin-Ying Song liang sun Ying Tan you-li Tuo Chen Wang Guo-Feng Wang Juan Wang ling-Jun Wang weng-Shuai Wang Yu-Sa Wang Xiang-Yang wen Bai-Yang Wu Bo-Bing Wu Mei Wu Shuo Xiao Shao-lin Xiong He Xu Jia-wei Yang Sheng Yang Yan-Ji Yang Yi-Jung Yang Qi-Bin Yi Qian-Qing Yin yuan you ai-Mei zhang cheng-Mo zhang Fan zhang Hong-Mei zhang Juan zhang Tong zhang Wan-Chang zhang wen-zhao zhang Yi zhang Yi-fei zhang Yong-Jie zhang yuan-Hang zhang Yue zhang zhao zhang Zhi zhang Zi-liang zhang Hai-Sheng zhao Xiao-Fan zhao Shi-Jie Zheng Yao-Guang Zheng Deng-Ke Zhou Jian-Feng Zhou Yu-Xuan Zhu Ren-lin Zhuang Yue Zhu Key Laboratory of Particle Astrophysics Institute of High Energy PhysicsChinese Academy of SciencesBeijing 100049China University of Chinese Academy of Sciences Chinese Academy of SciencesBeijing 100049China Institut fur Astronomie und Astrophysik Kepler Center for Astro and Particle PhysicsEberhard Karls Universität72076 TubingenGermany Department of Astronomy Beijing Normal UniversityBeijing 100088China Department of Astronomy Tsinghua UniversityBeijing 100084China Department of Physics Tsinghua UniversityBeijing 100084China Department of Engineering Physics Tsinghua UniversityBeijing 100084China Key Laboratory of Space Astronomy and Technology National Astronomical ObservatoriesChinese Academy of SciencesBeijing 100101China College of Physics Sciences&Technology Hebei UniversityBaoding 071002Hebei ProvinceChina

We present the observational results from a detailed timing analysis of the black hole candidate EXO 1846-031 during its outburst in 2019 with the observations of Insight-HXMT,NICER and *** outburst can be classified roughly into four different ***-C quasi-periodic oscillations(QPOs)observed by NICER(about 0.1-6 Hz)and Insight-HXMT(about 0.7-8 Hz)are also reported in this ***,we study various physical quantities related to QPO *** QPO rms-frequency relationship in the energy band 1-10 keV indicates that there is a turning pointing in frequency around2 Hz,which is similar to that of GRS 1915+105.A possible hypothesis for the relationship above may be related to the inclination of the source,which may require a high inclination to explain *** relationships between QPO frequency and QPO rms,hardness,total fractional rms and count rate have also been found in other transient sources,which can indicate that the origin of type-C QPOs is non-thermal.

关键词： X-ray binaries black hole candidate QPO EXO 1846–031

The first data release(DR1) of the LAMOST regular survey

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Research in Astronomy and Astrophysics 2015年第8期15卷 1095-1124页

作者： A-li Luo Yong-Heng zhao Gang zhao li-Cai Deng Xiao-wei liu Yi-Peng jing Gang Wang hao-Tong zhang Jian-Rong Shi Xiang-Qun Cui Yao-Quan Chu Guo-Ping li Zhong-Rui Bai Yue Wu Yan Cai Shu-Yun Cao Zi-huang Cao Jeffrey L.Carlin Hai-yuan Chen Jian-Jun Chen Kun-xin Chen li Chen Xue-Lei Chen Xiao-Yan Chen Ying Chen Norbert Christlieb Jia-Ru Chu Chen-Zhou Cui Yi-Qiao Dong Bing Du Dong-wei Fan Lei Feng Jian-Ning Fu Peng Gao Xue-fei Gong Bo-Zhong Gu Yan-xin Guo Zhan-wen Han Bo-liang He Jin-liang Hou Yong-Hui Hou wen Hou Hong-Zhuan Hu Ning-Sheng Hu Zhong-wen Hu Zhi-Ying Huo Lei Jia Fang-hua Jiang Xiang Jiang Zhi-Bo Jiang Ge Jin Xiao Kong Xu Kong Ya-Juan Lei ai-hua li Chang-hua li Guang-wei li Hai-Ning li Jian li Qi li Shuang li Sha-Sha li xin-Nan li Yan li Yin-Bi li Ye-Ping li yuan liang Chien-cheng lin Chao liu Gen-Rong liu Guan-Qun liu Zhi-Gang liu wen-Zhi Lu Yu Luo Yin-Dun Mao Heidi Newberg Ji-Jun Ni zhao-Xiang Qi Yong-Jun Qi Shi-Yin Shen Huo-Ming Shi jing Song Yi-Han Song Ding-Qiang Su Hong-Jun Su Zheng-Hong Tang Qing-Sheng tao yuan Tian Dan Wang Da-Qi Wang Feng-fei Wang Guo-Min Wang Hai Wang Hong-Chi Wang Jian Wang Jia-Ning Wang Jian-ling Wang Jian-Ping Wang Jun-Xian Wang Lei Wang Meng-xin Wang Shou-Guan Wang Shu-Qing Wang Xia Wang Ya-Nan Wang you Wang Yue-fei Wang you-Fen Wang Peng wei Ming-Zhi wei Hong Wu Ke-fei Wu Xue-Bing Wu Yu-Zhong Wu Xiao-Zheng xing ling-Zhe Xu xin-Qi Xu Yan Xu Tai-Sheng Yan De-hua Yang Hai-Feng Yang Hui-Qin Yang Ming Yang Zheng-Qiu Yao Yong Yu Hui yuan Hai-Bo yuan Hai-Long yuan wei-Min yuan Chao Zhai En-Peng zhang hua-wei zhang Jian-Nan zhang li-Pin zhang wei zhang Yong zhang Yan-Xia zhang Zheng-Chao zhang Ming zhao Fang Zhou Xu Zhou Jie Zhu Yong-Tian Zhu Si-cheng Zou Fang Zuo National Astronomical Observatories Chinese Academy of Sciences Department of Astronomy Peking University Shanghai Astronomical Observatory Chinese Academy of Sciences Nanjing Institute of Astronomical Optics & Technology National Astronomical ObservatoriesChinese Academy of Sciences University of Science and Technology of China Department of Physics Applied Physics and AstronomyRensselaer Polytechnic InstituteTroyNY 12180USA Department of Physics and Astronomy Earlham CollegeRichmondIN 47374USA Universitt Heidelberg Zentrum für AstronomieLandessternwarteKnigstuhl 1269117 HeidelbergGermany Department of Astronomy Beijing Normal University Yunnan Observatories Chinese Academy of Sciences Purple Mountain Observatory Chinese Academy of Sciences

The Large sky Area Multi-Object Fiber Spectroscopic Telescope（LAMOST） general survey is a spectroscopic survey that will eventually cover approximately half of the celestial sphere and collect 10 million spectra of stars, galaxies and QSOs. Objects in both the pilot survey and the first year regular survey are included in the LAMOST DR1. The pilot survey started in October 2011 and ended in June 2012, and the data have been released to the public as the LAMOST Pilot Data Release in August 2012. The regular survey started in September 2012, and completed its first year of operation in June 2013. The LAMOST DR1 includes a total of 1202 plates containing 2 955 336 spectra, of which 1 790 879 spectra have observed signalto-noise ratio（SNR） ≥ 10. All data with SNR ≥ 2 are formally released as LAMOST DR1 under the LAMOST data policy. This data release contains a total of 2 204 696 spectra, of which 1 944 329 are stellar spectra, 12 082 are galaxy spectra and 5017 are quasars. The DR1 not only includes spectra, but also three stellar catalogs with measured parameters： late A,FGK-type stars with high quality spectra（1 061 918 entries）, A-type stars（100 073 entries）, and M-type stars（121 522 entries）. This paper introduces the survey design, the observational and instrumental limitations, data reduction and analysis, and some caveats. A description of the FITS structure of spectral files and parameter catalogs is also provided.

关键词： techniques: spectroscopic survey—data release—catalog

10B-doped MCP detector developed for neutron resonance imaging at Back-n white neutron source

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Nuclear Science and Techniques 2024年第8期35卷 58-68页

作者： Qiang li li‑Jiao Wang jing‑Yu Tang Xiang‑Biao Qiu Zhen Chen Mao‑yuan zhao Chang‑Jun Ning Kai Pan wei Xu tao li Su‑Peng Lu Han Yi Rui‑Rui Fan Chang‑Qing Feng Rong zhang Xiao‑Yang sun Qi An hao‑Fan Bai Jiang‑Bo Bai Jie Bao Ping Cao Qi‑Ping Chen Yong‑hao Chen Zeng‑Qi Cui An‑Chuan Fan Fan‑Zhen Feng Min‑hao Gu Chang‑Cai Han Zi‑Jie Han Guo‑Zhu He Yong‑cheng He Yang Hong Yi‑wei Hu Han‑Xiong huang wei Jiang Zhi‑Jie Jiang Zheng‑Yao Jin ling Kang Bo li Gong li Xiao li Yang li Jie liu Rong liu Shu‑Bin liu Yi‑Na liu Guang‑yuan Luan Jie Ren Zhi‑Zhou Ren Xi‑Chao Ruan zhao‑Hui Song Kang sun Zhi‑xin Tan Sheng‑Da Tang Jin‑cheng Wang Peng‑cheng Wang zhao‑Hui Wang Zhong‑wei wen Xiao‑Guang Wu Xuan Wu Cong Xia Yong‑Ji Yu Guo‑Hui zhang Hang‑Chang zhang lin‑hao zhang Qi‑wei zhang Xian‑Peng zhang Yu‑liang zhang Yue zhang Zhi‑Yong zhang Zhi‑hao Zhou Ke‑Jun Zhu Chong Zou Institute of High Energy Physics Chinese Academy of Sciences(CAS)Beijing 100049China Spallation Neutron Source Science Center Dongguan 523803China State Key Laboratory of Particle Detection and Electronics Institute of High Energy Physics Chinese Academy of SciencesBeijing 100049China Dongguan Songshan Lake Future School Dongguan 523808China School of Nuclear Science and Technology University of Science and Technology of ChinaHefei 230027China State Key Laboratory of Particle Detection and Electronics University of Science and Technology of ChinaHefei 230026China North Night Vision Science and Technology(Nanjing)Research Institute Co.Ltd Nanjing 211106China Department of Modern Physics University of Science and Technology of ChinaHefei 230026China State Key Laboratory of Nuclear Physics and Technology School of PhysicsPeking UniversityBeijing 100871China Institute of Modern Physics Fudan UniversityShanghai 200433China Key Laboratory of Nuclear Data China Institute of Atomic EnergyBeijing 102413China China Academy of Engineering Physics Institute of Nuclear Physics and ChemistryMianyang 621900China USTC archaeometry lab University of Science and Technology of ChinaHefei 230026China Northwest Institute of Nuclear Technology Xi’an 710024China University of Chinese Academy of Sciences Beijing 100049China China Shipbuilding Trading Co. LtdBeijing 100044China

Neutron resonance imaging(NRI)has recently emerged as an appealing technique for neutron *** complexity surpasses that of conventional transmission imaging,as it requires a high demand for both a neutron source and ***,the progression of NRI technology has been sluggish since its inception in the 1980s,particularly considering the limited studies analyzing the neutron energy range above *** white neutron source(Back-n)at the China Spallation Neutron Source(CSNS)provides favorable beam conditions for the development of the NRI technique over a wide neutron energy range from eV to ***-sensitive microchannel plates(MCP)have emerged as a cutting-edge tool in the field of neutron detection owing to their high temporal and spatial resolutions,high detection efficiency,and low *** this study,we report the development of a 10B-doped MCP detector,along with its associated electronics,data processing system,and NRI experiments at the *** heavy elements such as gold,silver,tungsten,and indium can be easily identified in the transmission images by their characteristic resonance peaks in the 1–100 eV energy range;the more difficult medium-weight elements such as iron,copper,and aluminum with resonance peaks in the 1–100 keV energy range can also be *** particular,results in the neutron energy range of dozens of keV(Aluminum)are reported here for the first time.

关键词： Neutron resonance imaging 10B doped MCP detector White neutron source Sample nuclide identification