张文裕科研成就科研综述张文裕主要从事核物理和宇宙线等方面的实验研究并取得突出成就

验证了N.玻尔的液滴模型

发明了多丝火花计数器

20世纪40年代后期进一步研究确定子和原子核没有强作用，并在子吸收的研究中确证了子的存在，从而开拓了奇异原子物理研究领域

在超子与核子散射研究、北京正负电子对撞机建造的奠基性工作、筹建高山宇宙线实验站等方面作出了重要贡献

 研究领域&研究成果张文裕毕生献身于科学研究和中国的高能物理事业

在放射性同位素、宇宙线大气簇射和奇异原子研究以及多丝火花计数器的发明方面做出开创性的贡献

尤其在μ子吸收的研究中确证了μ原子的存在，从而开拓了奇异原子物理研究领域

 1943年秋，张文裕接到美国普林斯顿大学的邀请，再次远涉重洋到美国，在普林斯顿大学专门从事核物理研究和教学，继续致力探索微观物质世界的奥秘

1947年，张文裕在美国普林斯顿大学Palmer实验室根据铅、铁和铝箔停止μ子的实验，证明μ子被核俘获后在定态轨道跃迁，同时发射1—5MeV低能光子

实验表明μ子可以在一定条件下取代核外电子而在轨道上绕核旋转，从而以实验发现了μ子系弱作用粒子和μ原子，国际上称之为“张原子”和“张辐射” 

1956年回中国后，他推动云南落雪山宇宙线实验站的扩建，与肖健共同领导建造了当时世界上最大的云室组，做出了高水平的物理工作，培养了一代宇宙线研究者

20世纪60年代初，张文裕在苏联杜布纳联合核子所利用加速器进行高能物理实验，他把当时已知的重子共振态归纳成核子和超子的激发态，提出了一个重子能级跃迁图，并在Λ0超子和核子散射研究方面做出了贡献

 1972年，以他为首的18位科学家写信给周恩来总理，建议建造高能加速器，开展高能物理研究

1981年，张文裕亲自主持了高能物理研究基地建设调整方案的论证

他征求和听取了中国国内外高能物理学家的意见，在确定建造北京正负电子对撞机以及对撞机的物理目标和能区选择上起了关键作用

 主要论著W.Y.Chang(张文裕).Air-earth electrical current measurement of at- mospheric conductivify.B.S.thesis in Yenching,University,PeipiW.Y.Chang.Some thermomagnetic electrical and the rmomechanical electrical properties of iron.M.S.thesis in Yenching University,1W.Y.Chang and William Band.Thermomagnetic hysteresis in steel.Proceedings of Physical Society of London,1933,45:602.W.Y.Chang and C.S.Wang(王承书).Continuous records of theatmospheric potential gradient at yenching[J].中国物理学报,1934,1:93.W.Y.Chang and Y.M.Hsien(谢玉铭).Electrical insulation of baked soapstone[M].中国化学学会志,1935,Ⅲ:183.W.Y.Chang.Some properties of baked soapstones.Science,1935,83:376.J.R.S.Waring and W.Y.Chang.The formation of radio-phosphorous(30P).Proceedings of Royal Society of London,1936,A157:65.W.Y.Chang and A.Szalay.The formation of radio-aluminium28Al)and the resonance effect of Mg25.Proceedings of Royal Society of LonResonance effect of nuclear transmutations and formation of radioactive is otopes.Adissertation submitted by W.Y.Chang.Jesus ColW.B.Lewis,W.E.Burcham and W.Y.Chang.α-Particles fromthe radioactive disintegration of a light element.Nature,1937,139:24.w.Y.Chang,M.Goldhaber,R.Sagane.Radioactivity produced bygamma rays and neutrons of high energy.Nature,1937,139:962.C.L.Smih and W.Y.Chang.An accurate determination of the range- distribution curve of the radioactive α-Particles from8Li.ProceeC.S.Wang(Mrs.W.Y.Chang)and W.Y.Chang.Analysis ofbeta-disintegration data,PartI.The sargent curves and fermi K.U. The o ies of be14 W.Y.Chang and C.S.Wang.Analysis of beta-disintegration data, PartⅡ.The probability of beta-disintegration and the complexityW.Y.Chang.The regularities in energy levels of 1ight nuclei.Phys.Rev.,1944,65:352.W.Y.Chang and S.Rosenblum.Two simple apparatus for measuring the cyclotron(vertical)magnetic field with high accuracy.Review ofW.Y.Chang and S.Rosenblum.A simple counting system for alpha ray spectra and the energy distribution of Po alpha-particles.Phys.W.Y.Chang.Short-range alpha-particles from Po.Phys.Rev.1945,67:267.S.Rosenblum and W.Y.Chang.A simple counting system for alpha- ray spectra.Phys.Rev.,1945,67:58.W.Y.Chang.A study of the alpha-ray spectra by the cyclotron magnet. Phys.Rev.,1945,67:589.W.Y.Chang.A study of the alpha-particles from Po with a cyclotron- magnet alpha-ray spectrograph.Phys.Rve.,1946,69:60.W.Y.Chang.Low energyalpha-ray spectra and mechanism of alpha- decay.Phys.Rev.,1946,69:254.W.Y.Chang.Low energy alpha-particles from radium.Phys.Rev., 1946,70:632.W.Y.Chang.Alpha-ray spectra of RaC and RaC'.Phys.Rev.,1948, 74:1195.W .Y.Chang and T.Coor.Alpha-rayspectra of RaTh,Th and ThC'.Phys.Rev.1948,74:1196.W.Y.Chang.Search for heavy particles from stopped mesons.Phys. Rev.,1948,74:1236.W.Y.Chang.Evidence of low energy gamma-rays(1—5MeV)from stopped negative mesons.Phys.Rev.,1949,75:1315.W.Y.Chang.A cloud-chamber study of meson absorption by thin Pb, Fe and Al foils.Rev.of Modern Physics,1949,21:166.W.Y.Chang and J.R.Winckler.Cloud－chamber equipment for study of infrequent cosmic－ray processes.Review of Scientific Instrument,1949,20:276.W.Y.Chang.Further experiments on sea－level mesons stopped at thin Pb foils.Phys.Rev.,1949,76:170.W.Y.Chang.Further experiments on slow μ－mesons stopped at thin Al foils.Phys.Rev.,1950,79:205.G.Del Castilloand W.Y.Chang.Study o f shower sproduced in lead, carbon and beryllium.Phys.Rev.,1951,81:323.W.Y.Chang,G.Del Castillo and Leon Grodzins.Penetratingshowers produced in beryllium at sea level.Phys.Rev.,1951,84:582.W.Y.Chang and G.Del Castillo.Penetrating showers produced in car－ bon and lead at sea level.Phys.Rev.,1951,84:584.W.Y.Chang,G.Del Castillo and Leon Grodzins.Further results from the study of sea－level penetrating showers.Phys.Rev.,1953,89:408.L.Grodzins,G.Del Castillo and W.Y.Chang.On the two－particle showers from Be.Phys.Rev.,1953,90:361.W.Y.Chang.Sealevel mesons stopped in thin Pb and Al foils.I,pos sible emission of charged nuclear particles and related events.Phys. Rev.,1954,95:1282.W.Y.Chang.Sea－level mesons stopped in thin Pb and Al foils.Ⅱ,low energy(1—5MeV)gamma rays.Phys.Rev.,1954,95:1288.G.Del Castillo,A.Snyder,L.Grodzins and W.Y.Chang.Nuclearinteraction of sealevel cosmicray particles with carbon and lead.Phys.Rev.,1955,98:1163.Ishwar C.Gupta,Allen L.Sny der and W.Y.Chang.Further resultsfrom the study of Λ°－particles.Bulletin of American Physical Society,1956,Ⅱ(I):186.I.C.Gupta,W.Y.Chang and A.Snyder.Double－plate cloud－chamber study of Λ°particles.I,classification.Phys,Rev.1956,100:1264.A.Snyder,W.Y.Chang and 1.C.Gupta.Double－plate cloud－chamberstudy of Λ°particles.Ⅱ,mean decay times of θ and Λ°particles.Phys.Rve.,1956,100:1264.Ishwar C.Gupta,W.Y.Chang and AllenL.Snyder.Double－plate cloud－chamber study of Λ°particles:Classification and related results.Phys.Rev.,1957,106:141.A.Snyder,W.Y.Chang and I .C.Gupta.Doubleplate cloud－chamber study of Λ°particles:Mean lifetimes of θ and Λ°particles.Phys.Rev. 1957,106:149.张文裕.由宇宙线(1011-1014eV)引起的高能核作用[J].物理学报,1961,17:271.O BoзMожHой CxeMе Обpазования Λ-ιиιιронов Чeре:Йзобаpы В л р-Взаимодействияx ПpиЗн epияx7-8BeV,B.Ф.Bишнeвский,ДуЮaHъцай,B.И.Mороз,A.B.HикитиH,Ю.A.Троян,Ц зян Ⅲаоцзюнъ,ЧжaнBзнъюй,Б.А.IIIaхбазян,Янъу-гyан,жЭTФ,1964,46:232.К Bопроcy О ПpиMеHиMости Изо6aрHой Mодeли ОбpазоваHия ΛΓипeроHов Вπ- р-Взaи Mодействияx,B.Ф.ВишHeвский,Д y ю aHь-цaй,В.И.Мороз,Λ.B.Hикитин,ю.A.Tpoян,ЦзянШао-цзюнь,чжан Взнь-юй,Б.A.Шax6азяH,Я ньy-Гуан,Я ДЁPHАЯфИЗИКA,1965,1(6).张文裕.“基本粒子”的实验研究近况[J].物理学报,1965,21:1831.У пpyгоe PacсеяHиe Λ-Г и п eронов Со Cред HиM ИMпул ъсоM2.7г/cHa Протонах,B.Ф.BишHeвский,Д уюань-цaй,B.И.Mороз,А.B.HикитиH,Ю.A.TрояH,Цзян Шaо-цзюH6,ЧжанBЭнъ-юй,Б.A.Шaxбазян,янъy-гуаH,Я Л ЕРHАЯ ФИЗИКA,1966,3(4).

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