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

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

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Data release of the LAMOST pilot survey

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Research in Astronomy and Astrophysics 2012年第9期12卷 1243-1246页

作者： A-Li Luo Hao-Tong Zhang Yong-heng zhao Gang zhao Xiang-Qun Cui guo-Ping Li Yao-Quan chu Jian-Rong Shi Gang Wang Jian-Nan Zhang Zhong-Rui Bai Xiao-Yan Chen feng-Fei Wang Yan-Xin guo Jian-Jun Chen Bing Du Xiao Kong Ya-Juan Lei Yin-Bi Li Yi-Han Song Yue Wu Yan-Xia Zhang Xin-Lin zhou Fang Zuo Peng Du Lin he Wen Hou Yi-Qiao Dong Jian Li Guang-Wei Li Shuang Li Jing Song Yuan Tian Meng-Xin Wang Yong-Hui Hou Zhi-ying Huo hong-Zhuan Hu Ning-Sheng Hu Zhong-Wen Hu Lei Jia Fang-Hua Jiang Xiang Jiang Zi-Bo Jiang Ge Jin Ai-Hua Li Qi Li Yin-Dun Mao zheng-hong tang Qing-Sheng Tao Liang-Ping Tu Da-Qing Wang Dan Wang Jian-Ping Wang Lei Wang Shou-Guan Wang Shu-Qing Wang Ya-Nan Wang You Wang Yue-Fei Wang Ming-Zhi Wei Xiang-Xiang Xue Xiao-zheng Xing Ling-Zhe Xu Xin-Qi Xu Yan Xu De-Hua Yang Shi-Hai Yang zheng-Qiu Yao Yong Yu Hui Yuan Chao Zhai En-Peng Zhang Jing Zhang Li-Ping Zhang WeiZhang Yong Zhang Zhen-Chao Zhang Ming zhao Fang zhou Yong-Tian Zhu Jie Zhu Si-Cheng Zou National Astronomical Observatories Chinese Academy of Sciences Beijing 100012 China lal @ lamost o rg Nanjing Institute of Astronomical Optics and Technology National Astronomical ObservatoriesChinese Academy of Sciences Nanjing 210042 China University of Science and Technologyof 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

This paper describes the data release of the LAMOST pilot survey, which includes data reduction, calibration, spectral analysis, data products and data access. The accuracy of the released data and the information about the FITS headers of spectra are also introduced. The released data set includes 319 000 spectra and a catalog of these objects.

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

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Measurement of the neutron total cross section of carbon at the Back-n white neutron beam of CSNS

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Nuclear Science and Techniques 2019年第9期30卷 73-82页

作者： Xing-Yan Liu Yi-Wei Yang Rong Liu Jie Wen Zhong-Wei Wen Zi-Jie Han Zhi-zhou Ren Qi An Huai-Yong Bai Jie Bao Ping Cao Qi-Ping Chen Yong-Hao Chen Pin-Jing Cheng Zeng-Qi Cui Rui-Rui Fan Chang-Qing feng Min-Hao Gu feng-Qin guo Chang-Cai Han guo-Zhu he Yong-Cheng he Yue-feng he Han-Xiong Huang Wei-Ling Huang Xi-Ru Huang Xiao-Lu Ji Xu-Yang Ji Hao-Yu Jiang Wei Jiang Han-Tao Jing Ling Kang Ming-Tao Kang Bo Li Lun Li Qiang Li Xiao Li Yang Li Yang Li Shu-Bin Liu Guang-Yuan Luan ying-Lin Ma Chang-Jun Ning Bin-Bin Qi Jie Ren Xi-Chao Ruan zhao-Hui Song hong Sun Xiao-Yang Sun Zhi-Jia Sun Zhi-Xin Tan hong-Qing tang Jing-Yu tang Peng-Cheng Wang Qi Wang Tao-feng Wang Yan-feng Wang zhao-Hui Wang zheng Wang Qing-Biao Wu Xiao-Guang Wu Xuan Wu Li-Kun Xie Han Yi Li Yu Tao Yu Yong-Ji Yu guo-Hui Zhang Jing Zhang Lin-Hao Zhang Li-ying Zhang Qing-Min Zhang Qi-Wei Zhang Xian-Peng Zhang Yu-Liang Zhang Zhi-Yong Zhang ying-Tan zhao Liang zhou Zu-ying zhou Dan-Yang Zhu ke-Jun Zhu Peng Zhu Institute of Nuclear Physics and Chemistry China Academy of Engineering Physics State key Laboratory of Particle Detection and Electronics Chinese Academy of Sciences(CAS) Department of Modern Physics University of Science and Technology of China State key Laboratory of Nuclear Physics and Technology School of PhysicsPeking University key Laboratory of Nuclear Data China Institute of Atomic Energy Institute of High Energy Physics Chinese Academy of Sciences(CAS) Spallation Neutron Source Science Center University of South china Northwest Institute of Nuclear Technology Department of Engineering and Applied Physics University of Science and Technology of China Beihang University Xi’an Jiaotong University

To verify the performance of the neutron total cross-sectional spectrometer, the neutron total cross section of carbon is initially measured in the energy range of 1 eV to 20 MeV using the time-of-flight method. The measurement is performed at the Back-n white neutron source with a 76-m time-of-flight path using the china Spallation Neutron Source. A multilayer fast fission chamber with 235U and 238U is employed as the neutron detector. The diameter and thickness of the natural graphite sample are 70 mm and 40 mm, respectively. Signal waveforms are collected using a data acquisition system. Off-line data processing was used to obtain the neutron time-of-flight spectra and transmissions. The uncertainty of the counting statistics is generally approximately 3% for each bin in the energy range of 1–20 MeV. It is determined that the results for the neutron total cross section of carbon obtained using ^235U cells are in good agreement with the results obtained using 238U cells within limits of statistical uncertainty. Moreover, the measured total cross sections show good agreement with the broadening evaluated data.

关键词： CSNS Back-n white neutron source NTOX Neutron total cross section Carbon Multilayer fast fission chamber

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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

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Consensus statement on layout and delivery of automatic external defibrillator in china

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Journal of Hainan Medical University 2020年第15期26卷 18-23页

作者： Yu Cao Song Chen Yan-Fen Chai Xiao-Hui Chen Yu-guo Chen Shao-Wen Cheng Wen-Wei Cheng Bang-Han Ding Yang Deng Jie Fu Bang-Jiang Fang Mai-ying Fan Li Gui Ping Gong Wei guo Shu-Bin guo Liang Huang Ji-Yuan Han Zhong Ji Xian-Fei Ji Xin-Cai Ji hong-Xu Jin Xin-Jun Jiang Wang-Xiang Jiang Jia-Liang Liu Xiao-Ran Liu Zhi Liu chuan-Zhu Lv feng Lu Tan-Shi Li Xin Li Yong Li Shang-Lun Li Shuang-Ming Li Xiao-Gang Li Bao-Jun Li Pei-Wu Li chun-Sheng Li Zhi-Jun Li Chang-Luo Li Xiang-Min Li Yin-Ping Li Zong-Jun Lu Zu-Xun Lu Zhong-Qiu Lu Zhi-Qian Luo Xiao-Xing Liao Jian-Bo Lei Tao Ma Yu Ma Yue-feng Ma Qing-Bian Ma Lin-Hao Ma Jun-Qi Ma Shi-Nan Nie Jie-Miao Ou-Yang Peng Peng Qiao Pei Shu-Ming Pan guo-Zhong Qing Li-Jie Qin Wu-ying Qiao Fei Shao Wei Song Xing-Yue Song Zhen-Ju Song Rong-Ju Sun De-Ya Shang Du-Juan Sha Gui-Lan Tao guo-Gang Tian ying-Ping Tian Jian-Guang Tian Chao-Yang Tong Zi-Ren tang Meng-Xiong tang guo-Ping Wu Zhi Wan Tao Wang Xin Wang Peng Wang Zhong Wang Tong Wang Ri-Xing Wang Yi-Xin Wang Xiao-Dan Wang Ling Wu Wei Wei Hua Xiang feng Xu Jun Xu Jie Xu Miao-Rong Xie Shuo-Gui Xu Tie Xu feng Yu Wen Yi Li-Shan Yang Shi-Jiao Yan Jin-Jian Yao Shou-chun Yan Xue-Zhong Yu Xian-Zhi Ye Xian-Liang Yan Fu-Bing zhou Rong-Bin zhou Ming zhou Qiang zhou Jin zhou Ping zhou Chang-Ju Zhu Hua-Dong Zhu Ji-hong Zhu hong Zhang Mao Zhang Hua Zhang Na Zhang guo-Qiang Zhang guo-Xiu Zhang Jin-Song Zhang Wen-Wu Zhang Wen-Zhong Zhang Jian-feng Zhang Yi-Min Zhu Jun Zeng Yuan zheng Zhi-Jie zheng Shen zhao Yan zhao Min zhao Bin zhao Xiao-Dong zhao Xiao-Jing zhao hong-ke Zeng Sheng-Qiang Zou The chinese Society of Emergency Medicine Research Unit of Island Emergency Medicine Chinese Academy of Medical SciencesHainan Medical University key Laboratory of Emergency and Trauma of Ministry of Education Hainan Medical UniversityHaikouHainanChina Emergency and Trauma College Hainan Medical UniversityHaikouHainanChina Department of Emergency Hainan Clinical Research Center for Acute and Critical DiseasesThe Second Affiliated Hospital of Hainan Medical UniversityHaikouHainanChina key Laboratory of Hainan Trauma and Disaster Rescue key Laboratory of Trauma of Hainan Medical University

*** Sudden cardiac death(SCD)refers to sudden death due to a variety of cardiac *** is manifested as a sudden loss of consciousness,cardiac arrest,and respiratory arrest and generally shows early symptoms that are atypical and not easily detected[1].According to a recent study,nearly 544000 patients suffer from SCD every year in china[2].

关键词： cardiac death respiratory

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Amplitude analysis of the decays D^(0)→π^(+)π^(−)π^(+)π^(−)and D^(0)→π^(+)π^(−)π^(0)π^(0)

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chinese Physics C 2024年第8期48卷 6-33页

作者： M.Ablikim M.N.Achasov P.Adlarson O.Afedulidis X.C.Ai R.Aliberti A.Amoroso Q.An Y.Bai O.Bakina I.Balossino Y.Ban H.-R.Bao V.Batozskaya K.Begzsuren N.Berger M.Berlowski M.Bertani D.Bettoni F.Bianchi E.Bianco A.Bortone I.Boyko R.A.Briere A.Brueggemann H.Cai X.Cai A.Calcaterra G.F.Cao N.Cao S.A.Cetin J.F.Chang W.L.Chang G.R.Che G.Chelkov C.Chen C.H.Chen Chao Chen G.Chen H.S.Chen M.L.Chen S.J.Chen S.L.Chen S.M.Chen T.Chen X.R.Chen X.T.Chen Y.B.Chen Y.Q.Chen Z.J.Chen Z.Y.Chen S.K.Choi X.chu G.Cibinetto F.Cossio J.J.Cui H.L.Dai J.P.Dai A.Dbeyssi R.E.de Boer D.Dedovich C.Q.Deng Z.Y.Deng A.Denig I.Denysenko M.Destefanis F.De Mori B.Fang S.S.Fang W.X.Fang Y.Fang Y.Q.Fang R.Farinelli L.Fava F.Feldbauer G.Felici C.Q.feng J.H.feng Y.T.feng K.Fischer M.Fritsch C.D.Fu J.L.Fu Y.W.Fu H.Gao Y.N.Gao Yang Gao S.Garbolino I.Garzia P.T.Ge Z.W.Ge C.Geng E.M.Gersabeck B.Ding X.X.Ding Y.Ding Y.Ding J.Dong L.Y.Dong M.Y.Dong X.Dong M.C.Du S.X.Du Z.H.Duan P.Egorov Y.H.Fan J.Fang JA.Gilman K.Goetzen L.Gong W.X.Gong W.Gradl S.Gramigna M.Greco M.H.Gu Y.T.Gu C.Y.Guan Z.L.Guan A.Q.guo L.B.guo M.J.guo R.P.guo Y.P.guo A.Guskov J.Gutierrez K.L.Han T.T.Han X.Q.Hao F.A.Harris K.K.he K.L.he F.H.heinsius C.H.heinz Y.K.heng C.herold T.Holtmann P.C.hong G.Y.Hou X.T.Hou Y.R.Hou Z.L.Hou B.Y.Hu H.M.Hu J.F.Hu T.Hu Y.Hu G.S.Huang K.X.Huang L.Q.Huang X.T.Huang Y.P.Huang T.Hussain F.H\"olzken N.H\"usken N.in der Wiesche M.Irshad J.Jackson S.Janchiv J.H.Jeong Q.Ji Q.P.Ji W.Ji X.B.Ji X.L.Ji Y.Y.Ji X.Q.Jia Z.K.Jia D.Jiang H.B.Jiang P.C.Jiang S.S.Jiang T.J.Jiang X.S.Jiang Y.Jiang J.B.Jiao J.K.Jiao Z.Jiao S.Jin Y.Jin M.Q.Jing X.M.Jing T.Johansson S.Kabana N.Kalantar-Nayestanaki X.L.Kang X.S.Kang M.Kavatsyuk B.C.ke V.Khachatryan A.Khoukaz R.Kiuchi O.B.Kolcu B.Kopf M.Kuessner X.Kui A.Kupsc W.K\"uhn J.J.Lane P.Larin L.Lavezzi T.T.Lei Z.H.Lei H.Leithoff M.Lellmann T.Lenz C.Li C.Li C.H.Li Cheng Li D.M.Li F.Li G.Li H.Li H.B.Li H.J.Li H.N.Li Hui Li J.R.Li J.S.Li K.Li L.J.Li L.K.Li Lei Li M.H.Li P.R.Li Q.M.Li Q.X.Li R.Li S.X.Li T.Li W.D.Li W.G.Li X.Li X.H.Li X.L.Li X.Y.Li Y Institute of High Energy Physics Chinese Academy of SciencesBeijing 100049China Beihang University Beijing 100191China Bochum Ruhr-University D-44780 BochumGermany Budker Institute of Nuclear Physics SB RAS(BINP) Novosibirsk 630090Russia Carnegie Mellon University PittsburghPennsylvania 15213USA Central china Normal University Wuhan 430079China Central South University Changsha 410083China china Center of Advanced Science and Technology Beijing 100190China china University of Geosciences Wuhan 430074China chung-Ang University Seoul06974Republic of Korea COMSATS University Islamabad Lahore CampusDefence RoadOff Raiwind Road54000 LahorePakistan Fudan University Shanghai 200433China GSI helmholtzcentre for heavy Ion Research GmbH D-64291 DarmstadtGermany Guangxi Normal University Guilin 541004China Guangxi University Nanning 530004China Hangzhou Normal University Hangzhou 310036China hebei University Baoding 071002China helmholtz Institute Mainz Staudinger Weg 18D-55099 MainzGermany henan Normal University Xinxiang 453007China henan University Kaifeng 475004China henan University of Science and Technology Luoyang 471003China henan University of Technology Zhengzhou 450001China Huangshan College Huangshan 245000China Hunan Normal University Changsha 410081China Hunan University Changsha 410082China Indian Institute of Technology Madras Chennai 600036India Indiana University BloomingtonIndiana 47405USA INFN Laboratori Nazionali di Frascati INFN Laboratori Nazionali di FrascatiI-00044FrascatiItaly INFN Laboratori Nazionali di Frascati INFN Sezione di PerugiaI-06100PerugiaItaly INFN Laboratori Nazionali di Frascati University of PerugiaI-06100PerugiaItaly INFN Sezione di Ferrara INFN Sezione di FerraraI-44122FerraraItaly INFN Sezione di Ferrara University of FerraraI-44122FerraraItaly Inner Mongolia University Hohhot 010021China Institute of Modern Physics Lanzhou 730000China Institute of Physics and Technology Peace Avenue 54BUlaanbaatar 13330Mongolia Instituto de A

Using e^(+)e^(−)annihilation data corresponding to an integrated luminosity of 2.93 fb^(−1)taken at the center-of-mass energy√s=3.773 GeV with the BESIII detector,a joint amplitude analysis is performed on the decays D^(0)→π^(+)π^(−)π^(+)π^(−)and D^(0)→π^(+)π^(−)π^(0)π^(0)(non-η).The fit fractions of individual components are obtained,and large interferences among the dominant components of the decays D^(0)→a_(1)(1260)π,D^(0)→π(1300)π,D^(0)→ρ(770)ρ(770),and D^(0)→2(ππ)_(S)are observed in both *** the obtained amplitude model,the CP-even fractions of D^(0)→π^(+)π^(−)π^(+)π^(−)and D^(0)→π^(+)π^(−)π^(0)π^(0)(non-η)are determined to be(75.2±1.1_(stat).±1.5_(syst.))%and(68.9±1.5_(stat).±2.4_(syst.))%,*** branching fractions of D^(0)→π^(+)π^(−)π^(+)π^(−)and D^(0)→π^(+)π^(−)π^(0)π^(0)(non-η)are measured to be(0.688±0.010_(stat.)±0.010_(syst.))%and(0.951±0.025_(stat.)±0.021_(syst.))%,*** amplitude analysis provides an important model for the binning strategy in measuring the strong phase parameters of D^(0)→4πwhen used to determine the CKM angleγ(ϕ_(3))via the B^(−)→DK^(−)decay.

关键词： BESIII D^(0)meson decays amplitude analysis CP-even fraction

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中国散裂中子源反角白光中子束流参数的初步测量

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物理学报 2019年第8期68卷 38-49页

作者：鲍杰陈永浩张显鹏栾广源任杰王琦阮锡超张凯安琪白怀勇曹平陈琪萍程品晶崔增琪樊瑞睿封常青顾旻皓郭凤琴韩长材韩子杰贺国珠何泳成何越峰黄翰雄黄蔚玲黄锡汝季筱路吉旭阳江浩雨蒋伟敬罕涛康玲康明涛兰长林李波李论李强李晓李阳李样刘荣刘树彬刘星言马应林宁常军聂阳波齐斌斌宋朝晖孙虹孙晓阳孙志嘉谭志新唐洪庆唐靖宇王鹏程王涛峰王艳凤王朝辉王征文杰温中伟吴青彪吴晓光吴煊解立坤羊奕伟杨毅易晗于莉余滔于永积张国辉张旌张林浩张利英张清民张奇伟张玉亮张志永赵映潭周良周祖英朱丹阳朱科军朱鹏中国原子能科学研究院核数据重点实验室北京102413 中国科学院高能物理研究所北京100049 东莞中子科学中心东莞523803 西北核技术研究所西安710024 核探测与核电子学国家重点实验室北京100049 中国科学技术大学近代物理系合肥230026 核物理与核技术国家重点实验室北京大学物理学院北京100871 中国工程物理研究院核物理与化学研究所绵阳621900 南华大学衡阳421001 中国科学技术大学工程与应用物理系合肥230026 兰州大学核科学与技术学院兰州730000 北京航空航天大学北京100083 西安交通大学西安710049

中国散裂中子源(CSNS)已于2018年5月建设完工,随后进行了试运行.其中的反角白光中子束线(Back-n)可用于中子核数据测量、中子物理研究和核技术应用等多方面的实验.本文报道对该中子束的品质参数测量实验过程以及最终实验结果.实验主要... 详细信息

中国散裂中子源(CSNS)已于2018年5月建设完工,随后进行了试运行.其中的反角白光中子束线(Back-n)可用于中子核数据测量、中子物理研究和核技术应用等多方面的实验.本文报道对该中子束的品质参数测量实验过程以及最终实验结果.实验主要采用中子飞行时间法,利用^(235)U,^(238)U裂变室和~6Li-Si探测器测量了中子能谱和中子注量率,又利用闪烁体-互补金属氧化物半导体探测系统测量了中子束斑的剖面,得到了该束线的初步实验测量结果.其中白光中子的全能谱测量范围eV—100 MeV,给出了不确定度分析;给出了中子注量率两个实验厅位置的满功率值;给出了白光中子在直径60 mm情况下的全能区束斑.通过与模拟结果的比较探讨了以上结果的合理性,并提出了改进计划.这些实验结果为以后该束线的核数据测量和探测器标定实验奠定了基础.

关键词：中国散裂中子源反角白光中子中子飞行时间法中子束线特征参数

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中国散裂中子源反角白光中子源束内伽马射线研究

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物理学报 2020年第17期69卷 61-69页

作者：任杰阮锡超陈永浩蒋伟鲍杰栾广源张奇玮黄翰雄王朝辉安琪白怀勇鲍煜曹平陈昊磊陈琪萍陈裕凯陈朕崔增琪樊瑞睿封常青高可庆顾旻皓韩长材韩子杰贺国珠何泳成洪杨黄蔚玲黄锡汝季筱璐吉旭阳江浩雨姜智杰敬罕涛康玲康明涛李波李超李嘉雯李论李强李晓李样刘荣刘树彬刘星言穆奇丽宁常军齐斌斌任智洲宋英鹏宋朝晖孙虹孙康孙晓阳孙志嘉谭志新唐洪庆唐靖宇唐新懿田斌斌王丽娇王鹏程王琦王涛峰文杰温中伟吴青彪吴晓光吴煊解立坤羊奕伟易晗于莉余滔于永积张国辉张林浩张显鹏张玉亮张志永赵豫斌周路平周祖英朱丹阳朱科军朱鹏中国原子能科学研究院核数据重点实验室北京102413 中国科学院高能物理研究所北京100049 散裂中子源科学中心东莞523803 核探测与核电子学国家重点实验室北京100049 中国科学技术大学近代物理系合肥230026 北京大学物理学院核物理与核技术国家重点实验室北京100871 中国工程物理研究院核物理与化学研究所绵阳621900 西北核技术研究所西安710024 中国科学院大学北京100049 中国科学技术大学工程与应用物理系合肥230026 北京航空航天大学物理学院北京100083

在基于白光中子源的中子核反应测量中,伴随中子束的伽马射线是重要的实验本底之一.本文对中国散裂中子源反角白光中子源的束内伽马射线进行了研究.通过蒙特卡罗模拟,得到了伽马射线的能量分布和时间结构.通过直接测量和间接测量两种方... 详细信息

在基于白光中子源的中子核反应测量中,伴随中子束的伽马射线是重要的实验本底之一.本文对中国散裂中子源反角白光中子源的束内伽马射线进行了研究.通过蒙特卡罗模拟,得到了伽马射线的能量分布和时间结构.通过直接测量和间接测量两种方法测得低能中子区的束内伽马射线的时间结构.直接测量实验中,将载6Li的ZnS(Ag)闪烁体探测器置于束流线上,通过飞行时间法直接测量束内的中子和伽马射线的时间结构,并利用波形甄别技术进行粒子鉴别.间接测量法是将铅样品置于束流线上,利用C6D6闪烁体探测器测量样品上的散射伽马射线,从而得到入射伽马射线的时间结构.实验测量结果与模拟结果在12μs—2.0 ms的时间区间内具有较好的一致性.

关键词：反角白光中子源束内伽马射线测量飞行时间法蒙特卡罗模拟

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基于反角白光中子源次级质子的探测器标定

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物理学报 2021年第8期70卷 28-36页

作者：蒋伟江浩雨易晗樊瑞睿崔增琪孙康张国辉唐靖宇孙志嘉宁常军高可庆安琪白怀勇鲍杰鲍煜曹平陈昊磊陈琪萍陈永浩陈裕凯陈朕封常青顾旻皓韩长材韩子杰贺国珠何泳成洪杨黄翰雄黄蔚玲黄锡汝季筱璐吉旭阳姜智杰敬罕涛康玲康明涛李波李超李嘉雯李论李强李晓李样刘荣刘树彬刘星言栾广源穆奇丽齐斌斌任杰任智洲阮锡超宋朝晖宋英鹏孙虹孙晓阳谭志新唐洪庆唐新懿田斌斌王丽娇王鹏程王琦王涛峰王朝辉文杰温中伟吴青彪吴晓光吴煊解立坤羊奕伟于莉余滔于永积张林浩张奇玮张显鹏张玉亮张志永赵豫斌周路平周祖英朱丹阳朱科军朱鹏中国科学院高能物理研究所北京100049 散裂中子源科学中心东莞523803 北京大学物理学院核物理与核技术国家重点实验室北京100871 核探测与核电子学国家重点实验室中国科学院大学北京100049 中国科学技术大学近代物理系合肥230026 中国原子能科学研究院核数据重点实验室北京102413 中国工程物理研究院核物理与化学研究所绵阳621900 西北核技术研究院西安710024 中国科学技术大学工程与应用物理系合肥230026 北京航空航天大学物理学院北京100083

目前国内外的质子标定终端较少,且普遍为单能质子束流.基于中国散裂中子源的反角白光中子源的eV—200 MeV中子能量区间的白光中子束流,以及中子与氢的~1H(n, el)反应,可以获得宽能谱的能量连续次级质子.利用1 GSps采样率、12 bit的波形... 详细信息

目前国内外的质子标定终端较少,且普遍为单能质子束流.基于中国散裂中子源的反角白光中子源的eV—200 MeV中子能量区间的白光中子束流,以及中子与氢的~1H(n, el)反应,可以获得宽能谱的能量连续次级质子.利用1 GSps采样率、12 bit的波形数字化获取系统采集探测器输出波形信号,通过对波形信号的分析,得到中子及反冲质子的飞行时间,进而得到反冲质子的动能.利用该方法得到的质子,为探测器质子标定等研究提供了新的研究平台.在该研究平台已经开展了带电粒子望远镜的标定实验.研究了CsI (Tl)探测器不同的信号读出方式对望远镜的DE-E二维谱、幅度-质子动能二维谱等粒子鉴别方法得到的粒子鉴别的效果,得到了较优的探测器信号读出方案.该研究为带电粒子望远镜的建设提供了实验依据,也说明了基于反角白光中子源的宽能谱质子标定的可行性.

关键词：质子标定探测器 ~1H(n,el)反应反角白光中子源

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基于CSNS反角白光中子源的中子俘获反应截面测量技术研究

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物理学报 2021年第22期70卷 28-39页

作者：张奇玮栾广源任杰阮锡超贺国珠鲍杰孙琪黄翰雄王朝辉顾旻皓余滔解立坤陈永浩安琪白怀勇鲍煜曹平陈昊磊陈琪萍陈裕凯陈朕崔增琪樊瑞睿封常青高可庆韩长材韩子杰何泳成洪杨黄蔚玲黄锡汝季筱璐吉旭阳蒋伟江浩雨姜智杰敬罕涛康玲康明涛李波李超李嘉雯李论李强李晓李样刘荣刘树彬刘星言穆奇丽宁常军齐斌斌任智洲宋英鹏宋朝晖孙虹孙康孙晓阳孙志嘉谭志新唐洪庆唐靖宇唐新懿田斌斌王丽娇王鹏程王琦王涛峰文杰温中伟吴青彪吴晓光吴煊羊奕伟易晗于莉于永积张国辉张林浩张显鹏张玉亮张志永赵豫斌周路平周祖英朱丹阳朱科军朱鹏朱兴华中国原子能科学研究院核数据重点实验室北京102413 中国科学院高能物理研究所北京100049 散裂中子源科学中心东莞523803 核探测与核电子学国家重点实验室北京100049 中国科学技术大学近代物理系合肥230026 北京大学物理学院核物理与核技术国家重点实验室北京100871 中国工程物理研究院核物理与化学研究所绵阳621900 西北核技术研究院西安710024 中国科学院大学北京100049 中国科学技术大学工程与应用物理系合肥230026 北京航空航天大学物理学院北京100083 华能山东石岛湾核电有限公司荣成264312

中子俘获反应截面数据在核天体物理研究、先进核能开发中具有非常重要的应用,由于缺乏合适的白光中子源和探测装置,国内在keV能区(1 eV-100 keV)中子俘获反应截面的实验数据几乎是空白.中国原子能科学研究院核数据重点实验室建造了国内... 详细信息

中子俘获反应截面数据在核天体物理研究、先进核能开发中具有非常重要的应用,由于缺乏合适的白光中子源和探测装置,国内在keV能区(1 eV-100 keV)中子俘获反应截面的实验数据几乎是空白.中国原子能科学研究院核数据重点实验室建造了国内第一台γ全吸收型探测装置,由40块BaF_(2)探测器单元组成厚度为15 cm,内半径为10 cm的BaF_(2)晶体球壳,共覆盖了95.2%的立体角.利用升级后的装置在中国散裂中子源的反角白光中子源上建立了中子俘获反应截面在线测量技术.在不规则的φ30 mm中子束斑的实验条件下,完成首次197Au中子俘获反应截面的在线测量,利用加和能谱和多重数分布扣除本底,反演飞行时间谱得到keV能区197Au中子俘获反应截面的实验数据.通过与ENDF评价数据库相关数据的比较,共振峰位置能够很好地吻合,从而验证了测量装置和测量技术的可靠性,为下一步高精度截面数据的获取奠定基础.

关键词： γ全吸收型探测装置中子俘获反应截面中国散裂中子源白光中子源

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