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Study of the production of Λ_b^0 band ~0 hadrons in pp collisions and first measurement of the Λ_b^0→J/ψpK^- branching fraction

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Chinese Physics C 2016年第1期40卷 1-16页

作者： O.Kochebina M.Kolpin I.Komarov R.F.Koopman P.Koppenburg M.Kozeiha L.Kravchuk K.Kreplin M.Kreps G.Krocker P.Krokovny F.Kruse W.Krzemien W.Kucewicz M.Kucharczyk V.Kudryavtsev A.K.Kuonen K.Kurek T.Kvaratskheliya D.Lacarrere G.Lafferty A.Lai D.Lambert G.Lanffanchi C.Langenbruch B.Langhans T.Latham C.Lazzeroni R.Le Gac J.van Leerdam J.-P.Lees R.Lefevre A.Leflat J.Lefrancois E.Lemos Cid O.Leroy T.Lesiak B.Leverington Y.Li T.Likhomanenko M.Liles R.Lindner C.Linn F.Lionetto B.Liu X.Liu D.Loh I.Longstaff J.H.Lopes D.Lucchesi M.Lucio Martinez H.Luo A.Lupato E.Luppi O.Lupton A.Lusiani F.Machefert F.Maciuc O.Maev K.Maguire S.Malde A.Malinin G.Manca G.Mancinelli P.Manning A.Mapelli J.Maratas J.F.Marchand U.Marconi C.Marin Benito P.Marino J.Marks G.Martellottil M.Martin M.Martinelli D.Martinez Santos F.Martinez Vidal D.Martins Tostes A.Massafferri R.Matev A.Mathad Z.Mathe C.Matteuzzi A.Mauri B.Maurin A.Mazurov M.McCann J.McCarthy A.McNab R.McNulty B.Meadows F.Meier M.Meissner D.Melnychuk M.Merk E Michielin D.A.Milanes M.-N.Minard D.S.Mitzel J.Molina Rodrigue I.A.Monroy S.Monteil M.Morandin P.Morawski A.Morda M.J.Morello J.Moron A.B.Morris R.Mountain F.Muheim D.Miiller J.Muller K.Muller V.Muller M.Mussini B.Muster P.Naik T.Nakada R.Nandakumar A.Nandi I.Nasteva M.Needham N.Neri S.Neubert N.Neufeld M.Neuner A.D.Nguyen T.D.Nguyen C.Nguyen-Mau V.Niess R.Niet N.Nikitin T.Nikodem D.Ninci A.Novoselov D.P.O'Hanlon A.Oblakowska-Mucha V.Obraztsov S.Ogilvy O.Okhrimenko R.Oldeman C.J.G.Onderwater B.Osorio Rodrigues J.M.Otalora Goicochea A.Otto P.Owen A.Oyanguren A.Palano F.Palombo M.Palutan J.Panman A.Papanestis M.Pappagallo L.L.Pappalardo C.Pappenheimer C.Parkes G.Passaleva G.D.Patel M.Patel C.Patrignani A.Pearce A.Pellegrino G.Penso M.Pepe Altarelli S.Perazzini P.Perret L.Pescatore K.Petridis A.Petrolini M.Petruzzo E.Picatoste Olloqui B.Pietrzyk T:.Pilar D.Pinci A.Pistone A.Piucci S.Playfer M.Plo Casasus T.Poikela F.Polci A.Poluektov I.Polyakov E.Polycarpo A.Popov D.Popov B.Popovici C.Potterat E.Price J.D.Price J.Prisciandaro A.Pritchard Centro Brasileiro de Pesquisas Ffsicas(CBPF) Rio de JaneiroBrazil Universidade Federal do Rio de Janeiro(UFRJ) Rio de JaneiroBrazil Center for High Energy Physics Tsinghua UniversityBeijingChina LAPP Universite Savoie Mont-BlancCNRS/IN2P3Annecy-Le-VieuxFrance Clermont Universite Universite Blaise PascalCNRS/IN2P3LPCclermont-FerrandFrance CPPM Aix-Marseille UniversitYCNRS/IN2P3MarseilleFrance LAL Universite Paris-SudCNRS/IN2P3OrsayFrance LPNHE Universite Pierre et Marie CurieUniversite Paris DiderotCNRS/IN2P3ParisFrance Fakultat Physik Technische Universitat DortmundDortmundGermany Max-Planck-lnstitut fur Kernphysik(MPIK) HeidelbergGermany Physikalisches Institut Ruprecht-Karls-Universitat HeidelbergHeidelbergGermany School of Physics University College DublinDublinIreland sezione infn di Bari BariItaly sezione infn di Bologna BolognaItaly sezione infn di Cagliari CagliariItaly sezione infn di Ferrara FerraraItaly sezione infn di Firenze FirenzeItaly Laboratori Nazionali dell'infn di Prascati FrascatiItaly sezione infn di Genova GenovaItaly sezione infn di Milnno Bicocca MilunoItaly sezione infn di Milano MilanoItaly sezione infn di Padova PadovaItaly sezione infn di pisa PisaItaly sezione infn di Roma Tor Vergata RomaItaly sezione infn di Roma La Sapienza RomaItaly Henryk Niewodniczanski Institute of Nuclear Physics Polish Academy of Sciences Krak6wPoland AGH-University of Science and Technology Faculty of Physics and Applied Computer ScienceKrakowPoland National Center for Nuclear Research(NCBJ) WarsawPoland Horia Hulubei National Institute of Physics and Nuclear Engineering Bucharest-MagureleRomania Petersburg Nuclear Physics Institute(PNPI) GatchinaRussia Institute of Theoretical and Experimental Physics(ITEP) MoscowRussia Institute of Nuclear Physics Moscow State University(SINP MSU)MoscowRussia Institute for Nuclear Research of the Russian Academy of Sciences(INR RAN) MoscowRussia Budker Institute of Nuclear Physics(SB RAS)and Novosibirsk State University No

The product of the ∧0/b （-B/0） differential production cross-section and the branching fraction of the decay ∧0/b→ J/ψ pK-（-B/0→ J/ψ-K＊（892）0）is measured as a function of the beauty hadron transverse momentum, PT, and rapidity, y. The kinematic region of the measurements is pT〈20 GeV/c and 2.0 〈g〈4.5.The measurements use a data sample corresponding to an integrated luminosity of 3fb-1 collected by the LHCb detector in pp collisions at centre-of-mass energies √s=7 TeV in 2011 and √s=8 TeV in 2012. Based on previous LHCb results of the fragmentation fraction ratio,f∧0/b/fd,the branching fraction of the decay ∧0/b→ J/ψ pK-is measured to be B（∧0/b→ J/ψ pK-）=（3.17±0.04±0.07±0.34＋0.45/-0.28）×10-4,where the first uncertainty is statistical, the second is systematic, the third is due to the uncertainty on the branching fraction of the decay -B/0 →J/ψ-K＊（892）0,and the fourth is due to the knowledge of f∧0/b/fd.The sum of the asymmetries in the production and decay between ∧0/b and ∧0/bis also measured as a function of PT and y.The previously published branching fraction of ∧0/b→ J/ψ pπ-,relative to that of ∧0/b→ J/ψ pK-,is updated. The branching fractions of ∧0/b→P＋c（→ J/ψp）K-are determined.

关键词： production cross-section branching fraction b hadrons proton-proton collisions

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Sieving of H_2 and D_2 Through End-to-End Nanotubes

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Communications in Theoretical Physics 2014年第10期61卷 541-549页

作者： Devagnik Dasgupta Debra J.Searles Lamberto Rondoni Stefano Bernardi Center for Space Human Robotics IITpolitoTorino 10129Italy Department of Mathematical Sciences and Graphene PoliTo Lab Politecnico di TorinoTorino 10126Italy Australian Institute for Bioengineering and Nanotechnology Centre for Theoretical and Computational Molecular Science the University of QueenslandBrisbaneQld 4072Australia School of Chemistry and Molecular Bioscience the University of QueenslandBrisbaneQld 4072Australia Kavli Institute for Theoretical Physics China the Chinese Academy of Sciences infn Sezione di TorinoVia P.Giuria 1TorinoItaly

We study the quantum molecular sieving of H2 and D2 through two nanotubes placed end-to-end. An analytic treatment, assuming that the particles have classical motion along the axis of the nanotube and are confined in a potential well in the radial direction, is considered. Using this idealistic model, and under certain conditions, it is found that this device can act as a complete sieve, allowing chemically pure deuterium to be isolated from an isotope mixture. We also consider a more realistic model of two carbon nanotubes and carry out molecular dynamics simulations using a Feynman–Hibbs potential to model the quantum effects on the dynamics of H2 and D2. Sieving is also observed in this case, but is caused by a different process.

关键词： molecular sieving quantum sieving molecular dynamics simulation carbon nanotubes

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Exploring fermionic multiplet dark matter through precision measurements at the CEPC

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Chinese Physics C 2022年第9期46卷 159-172页

作者：高林青毕效军王金伟向仟飞殷鹏飞 Key Laboratory of Particle Astrophysics Institute of High Energy PhysicsChinese Academy of SciencesBeijing 100049China School of Physical Sciences University of Chinese Academy of SciencesBeijing 100049China Scuola Internazionale Superiore di Studi Avanzati(SISSA) via Bonomea 26534136 TriesteItaly infn Sezione di Triestevia Valerio 234127 TriesteItaly Institute for Fundamental Physics of the Universe(IFPU) via Beirut 234151 TriesteItaly Center for High Energy Physics Peking UniversityBeijing 100871China

New physics could be explored through loop effects using the precision measurements at the Circular Electron Positron Collider(CEPC)owing to its clean collision environment and high luminosity.In this paper,we focus on two dark matter models that involve additional electroweak fermionic multiplets.We calculate their one-loop corrections in five processes,i.e.,e^(+)e^(-)→μ^(+)μ^(-),Zh,W^(+)W^(-),ZZ,and,Zγ,and investigate the corresponding signatures at the CEPC with the projected sensitivity.We observe that the detectable parameter regions of these processes are complementary.The combined analysis shows that the mass of dark matter m_(χ^(0)_(1))in these two models can be probed up to-150GeV and-450GeV,respectively,at a 95%confidence level.

关键词： CEPC dark matter loop correction

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Measurements of the center-of-mass energies of e~+e~- collisions at BESⅢ

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Chinese Physics C 2021年第10期45卷 11-19页

作者： M.Ablikim M.N.Achasov P.Adlarson S.Ahmed M.Albrecht R.Aliberti A.Amoroso M.R.An Q.An X.H.Bai Y.Bai O.Bakina R.Baldini Ferroli I.Balossino Y.Ban K.Begzsuren N.Berger M.Bertani D.Bettoni F.Bianchi J.Bloms A.Bortone J.F.Chang W.L.Chang G.Chelkov D.Y.Chen G.Chen H.S.Chen M.L.Chen S.J.Chen X.R.Chen Y.B.Chen Z.J.Chen W.S.Cheng G.Cibinetto F.Cossio X.F.Cui H.L.Dai X.C.Dai A.Dbeyssi R.E.de Boer D.Dedovich Z.Y.Deng A.Denig L.Fava F.Feldbauer G.Felici C.Q.Feng J.H.Feng M.Fritsch C.D.Fu Y.Gao X.Q.Hao F.A.Harris K.L.He F.H.Heinsius C.H.Heinz T.Held Y.K.Heng C.Herold Y.Hu G.S.Huang L.Q.Huang X.T.Huang Y.P.Huang Z.Huang T.Hussain N Husken W.Ikegami Andersson W.Imoehl M.Irshad S.Jaeger S.Janchiv Q.Ji Q.P.Ji M.Q.Jing T.Johansson N.Kalantar-Nayestanaki X.S.Kang R.Kappert M.Kavatsyuk B.C.Ke I.K.Keshk A.Khoukaz P.Kiese R.Kiuchi R.Kliemt L.Koch O.B.Kolcu B.Kopf M.Kuemmel M.Kuessner A.Kupsc M.G.Kurth W.Kuhn J.J.Lane J.S.Lange P.Larin A.Lavania L.Lavezzi Z.H.Lei H.Leithoff M.Lellmann T.Lenz C.Li J.Q.Li J.S.Li Ke Li L.K.Li Lei Li P.R.Li S.Y.Li W.D.Li W.G.Li X.H.Li G.R.Liao 廖龙洲 J.Libby C.X.Lin B.J.Liu C.X.Liu D.Liu F.H.Liu Fang Liu Feng Liu H.B.Liu H.M.Liu Huanhuan Liu Huihui Liu J.B.Liu J.L.Liu J.Y.Liu K.Liu K.Y.Liu L.Liu M.H.Liu P.L.Liu Q.Liu Q.Liu S.B.Liu M.M.Ma Q.M.Ma R.Q.Ma R.T.Ma X.X.Ma X.Y.Ma F.E.Maas M.Maggiora S.Maldaner S.Malde Q.A.Malik A.Mangoni Y.J.Mao Z.P.Mao S.Marcello Z.X.Meng J.G.Messchendorp G.Mezzadri T.J.Min R.E.Mitchell X.H.Mo N.Yu.Muchnoi H.Muramatsu S.Nakhoul Y.Nefedov F.Nerling I.B.Nikolaev Z.Ning P.Patteri M.Pelizaeus H.P.Peng K.Peters J.Pettersson J.L.Ping R.G.Ping S.Pogodin Z.Qian C.F.Qiao L.Q.Qin X.P.Qin X.S.Qin Z.H.Qin J.F.Qiu S.Q.Qu K.H.Rashid K.Ravindran C.F.Redmer A.Rivetti V.Rodin M.Rolo G.Rong Ch.Rosner M.Rump H.S.Sang A.Sarantsev Y.Schelhaas C.Schnier K.Schoenning M.Scodeggio D.C.Shan W.Shan X.Y.Shan J.F.Shangguan M.Shao C.P.Shen H.F.Shen P.X.Shen X.Y.Shen H.C.Shi R.S.Shi X.Shi X.D Shi J.J.Song W.M.Song Y.X.Song K.Wang L.L.Wang M.Wang M.Z.Wang Meng Wang W.Wang W.H.Wang W.P.Wang X.Wang X.F.Wang X.L.Wang Liaoning Normal University University of Science and Technology of China State Key Laboratory of Particle Detection and Electronics University of Jinan Southeast University Joint Institute for Nuclear Research infn Laboratori Nazionali di Frascati INFN Laboratori Nazionali di Frascati infn sezione di Ferrara INFN Sezione di Ferrara Peking University State Key Laboratory of Nuclear Physics and Technology Institute of High Energy Physics Institute of Physics and Technology University of Muenster University of Chinese Academy of Sciences the Moscow Institute of Physics and Technology Central China Normal University Nanjing University Institute of Modern Physics Hunan University School of Physics and Electronics Hunan University University of Turin and infn IN-FNI-10125TurinItaly G.I.Budker Institute of Nuclear Physics SB RAS (BINP) Nankai University University of Turin and infn University of Eastern Piedmont University of Turin and infn IN-FN Sun Yat-Sen University University of South China Henan Normal University University of Hawaii Suranaree University of Technology Shandong University University of the Punjab the Novosibirsk State University Indiana University University of Groningen Liaoning University Shanxi Normal University GSI Helmholtzcentre for Heavy Ion Research GmbH Justus-Liebig-Universitaet Giessen Ⅱ. Physikalisches Institut Turkish Accelerator Center Particle Factory Group Istanbul Bilgi University HEP Res. Cent. Istinye University University of Manchester Indian Institute of Technology Madras Uppsala University Qufu Normal University Beijing Institute of Petrochemical Technology Lanzhou University Frontiers Science Center for Rare Isotopes Lanzhou University Lanzhou Center for Theoretical Physics Lanzhou University Tsinghua University Guangxi Normal University Shanxi University Guangxi University Henan University of Science and Technology Helmholtz Institute Mainz Fudan University Key Laboratory of Nuclear Physics and Ion-beam Application (MOE) and Institute of Modern Physics Fudan Uni

During the 2016-17 and 2018-19 running periods, the BESⅢ experiment collected 7.5 fb-1of e~+e~- collision data at center-of-mass energies ranging from 4.13 to 4.44 GeV. These data samples are primarily used for the study of excited charmonium and charmoniumlike states. By analyzing the di-muon process e~+e~-→(γISR/FSR)μ~+μ~-, we measure the center-of-mass energies of the data samples with a precision of 0.6 MeV. Through a run-by-run study, we find that the center-of-mass energies were stable throughout most of the data-collection period.

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定量因果原理对变分原理和相互作用的局域性因果原理的统一

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自然杂志 2001年第4期23卷 241-242页

作者：黄永畅 X.G.Li 北京工业大学应用物理系 infn Sezione di Catania

满足因果原理是一切科学的基本要求.因为从物质间相互作用的因果关系来看,其间必有物质传递和转换,其传递的物质或物质的转换不会凭空增加或减少.故任意一些量的定量的作用(因)必导致相应等量作用(果),则有 DS-CS＝0 (1)其物理意义是任... 详细信息

满足因果原理是一切科学的基本要求.因为从物质间相互作用的因果关系来看,其间必有物质传递和转换,其传递的物质或物质的转换不会凭空增加或减少.故任意一些量的定量的作用(因)必导致相应等量作用(果),则有 DS-CS＝0 (1)其物理意义是任一类算子D 对集合S作用,其所能出现的真实结果必导致体系满足某一类算子集合c对S的作用,使CS与DS在定量上相等,整个过程满足任意一些量的定量作用(因)导致相应等量作用(果),即满足定量因果原理.(1)式意义是重大的,因表征物理学中基本相互作用规律的规范场是主纤维丛的联络[1],其联络的获得正是(1)式中D为联络算子,S为主纤维丛上的截面矢量,C＝cω为联络的特例[2].

关键词：定量因果原理物质相互作用变分原理局域性因果原理物理学

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68Ni和132Sn矮共振约束对称能密度依赖行为(英文)

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IMP & HIRFL Annual Report 2010年 23-25页

作者：曹李刚 Andrea Carbone Gianluca Colo dipartimento di Fisica Universit`a degliStudi di Milano infn Sezione di Milano

The energy per particle in a nuclear system characterized by a total density ρ(sum of the neutron and proton densities ρn and ρp),and by a local asymmetry δ≡(ρn-ρp)/ρ,is usually written asEA(ρ,δ)=E/A(ρ,δ=0)+ S(ρ)δ2.(1)Odd powers of δ are forbidden by the isospin symmetry and the term proportional to δ4 is found to be negligible.The above equation defines the so-called symmetry energy S(ρ).Determining the values of the symmetry energy at various densities

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Energy calibration of HPGe detector using the high-energy characteristic γ rays in 13C formed in 6Li + 12C reaction

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Nuclear Science and Techniques 2020年第5期31卷 57-63页

作者： Jia-Tai Li Xue-Dou Su Gao-Long Zhang Guang-Xin Zhang Shi-Peng Hu Jing-Bin Lu Yi-Feng Lv Hui-Bin Sun Huan-Qiao Zhang D.Testov P.R.John J.J.Valiente-Dobon A.Goasduff M.Siciliano F.Galtarossa F.Recchia D.Mengoni D.Bazzacco School of Physics Beihang UniversityBeijing 100191China Shenyuan Honors College Beihang UniversityBeijing 100191China Beijing Advanced Innovation Center for Big Data-Based Precision Medicine School of Medicine and EngineeringBeihang University and Key Laboratory of Big Data-Based Precision Medicine(Beihang University)Ministry of Industry and Information TechnologyBeihang UniversityBeijing 100191China dipartimento di Fisica Astronomia dell’Universit'a di PadovaPaduaItaly Istituto Nazionale di Fisica Nucleare Sezione di PadovaPaduaItaly College of Physics Science and Technology Shenzhen UniversityShenzhen 518060China College of Physics Jilin UniversityChangChun 130012China China Institute of Atomic Energy Beijing 102413China Laboratori Nazionali di Legnaro INFNLegnaroPaduaItaly Irfu/CEA Universit de Paris-SaclayGif-sur-YvetteFrance

An 6 Li+89Y experiment was conducted at the Laboratori Nazinali di Legnaro,infn,Italy.The 550μg/cm^2 thick^89Y target was backed on a 340μg/cm^2 thick 12C foil.The severalγrays in the experiment with energies higher than 3000 keV can most likely be ascribed to the transitions in the 13C nuclei,which can be formed through various interactions between the 6 Li beam and the 12C foil.The high-energy properties ofγrays in 13C are employed for energy calibrating HPGe detectors,especially for the>3000 keV region,which is impossible to reach by common standard sources(152Eu,133Ba,etc.).Furthermore,γ-γand particle-γcoincidence measurements were performed to investigate the formation of 13C.

关键词： Energy calibration Coincidence measurement Weakly bound nuclei Reaction mechanism

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Indoor Radon Concentrations in Dwellings of Ischia Island

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Journal of Environmental Protection 2013年第8期4卷 37-39页

作者： Mariagabriella Pugliese Maria Quarto Filomena Loffredo Agostino Mazzella Vincenzo Roca 1dipartimento di Fisica Università di Napoli Federico II Naples Italy 2Istituto Nazionale di Fisica Nucleare (infn) Sezione di Napoli Naples Italy dipartimento di Fisica Università di Napoli Federico II Naples Italy Liceo Statale Ischia Naples Italy

Indoor radon concentration measurements were performed in dwellings of Ischia island (South Italy) using commercial E-Perm devices in LST configuration. The average concentrations in the dwellings were found to vary from 125 to 865 Bq/m3 with an average of 354 ± 176 Bq/m3. This value is higher than Italian National average that is 75 Bq/m3 and Campanian average that is 95 Bq/m3. Correlation between indoor radon concentration measurements and floor level of monitored room was also studied.

关键词： Radon E-Perm Floor Level

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Search for the lepton favor violating decay J/ψ→eμ

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Science China(Physics,Mechanics & Astronomy) 2023年第2期66卷 24-33页

作者： BESII Collaboratio Institute of High Energy Physics Beijing 100049 G.I. Budker Institute of Nuclear Physics SB RAS(BINP) Russia Novosibirsk 630090 Novosibirsk State University Russia Novosibirsk 630090 Uppsala University Sweden Uppsala -75120 Bochum Ruhr-University Germany Bochum D-44780 Johannes Gutenberg University of Mainz Germany Mainz D-55099 University of Turin and infn University of Turin Italy Turin I-10125 University of Turin and infn INFN Italy Turin I-10125 Liaoning Normal University Dalian 116029 University of Science and Technology of China Hefei 230026 State Key Laboratory of Particle Detection and Electronics State Key Laboratory of Particle Detection and Electronics Beijing 100049 University of Jinan Ji'nan 250022 Southeast University Nanjing 211100 Joint Institute for Nuclear Research Russia Moscow 141980 infn Laboratori Nazionali di Frascati INFN Laboratori Nazionali di Frascati Italy Frascati I-00044 infn sezione di Ferrara INFN Sezione di Ferrara Italy Ferrara I-44122 Peking University Beijing 100871 Peking University State Key Laboratory of Nuclear Physics and Technology Beijing 100871 National Centre for Nuclear Research Poland Warsaw 02-093 Institute of Physics and Technology Mongolia Ulaanbaatar 13330 University of Muenster Germany Muenster 48149 Carnegie Mellon University USA Pittsburgh 15213 Wuhan University Wuhan 430072 University of Chinese Academy of Sciences Beijing 100049 Turkish Accelerator Center Particle Factory Group Istinye University Turkey Istanbul 34010 Moscow Institute of Physics and Technology Russia Moscow 141700 Nankai University Tianjin 300071 Soochow University Suzhou 215006 Nanjing University Nanjing 210093 Tsinghua University Beijing 100084 Institute of Modern Physics Lanzhou 730000 Hunan University Changsha 410082 School of Physics and Electronics Hunan University Changsha 410082 Shandong University Ji'nan 250100 Yunnan University Kunming 650500 Helmholtz Institute Mainz Germany Mainz D-55

We present a search for the lepton flavor violating decay J/ψ→e±μ?using 8.998×109J/ψevents collected with the BESⅢdetector at the BEPCⅡe+e-storage ring.No excess of signal above background is observed;we therefore set an upper limit on the branching fraction of B(J/ψ→e±μ?)<4.5×10-9at the 90%confidence level.Improving the previous best result by a factor of more than 30,this measurement places the most stringent limit to date on lepton flavor violation in the heavy quarkonium sector.

关键词： BESⅢ decay limit

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上海光源X射线成像实验站相位衬度CT初步结果

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核技术 2009年第4期32卷 241-245页

作者：陈荣昌杜国浩谢红兰邓彪朱佩平佟亚军胡雯薛艳玲陈灿任玉琦周光照王玉丹肖体乔徐洪杰中国科学院上海应用物理研究所上海201800 dipartimento di Fisica Universita di Trieste e INFNSezione di Trieste 中国科学院高能物理研究所北京100049

X射线相位衬度CT能获得样品内部结构的边缘增强图像,可观察到传统X射线吸收CT无法观察到的生物软组织内部微细结构,具有巨大发展潜力。经初步调试,上海光源X射线成像实验站的8-72.5keV单色X射线输出已能用于实验研究。本文在X射线成像... 详细信息

X射线相位衬度CT能获得样品内部结构的边缘增强图像,可观察到传统X射线吸收CT无法观察到的生物软组织内部微细结构,具有巨大发展潜力。经初步调试,上海光源X射线成像实验站的8-72.5keV单色X射线输出已能用于实验研究。本文在X射线成像实验站上开展生物样品(蝗虫)同轴X射线相位衬度CT研究,获得蝗虫样品的切片重构图像和三维重建图像。结果图像中,蝗虫样品的翅膀、表面纹理和内部组织分布情况清晰可见。

关键词： CT 相位衬度成像 X射线同步辐射

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