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质量小于65的二次束流强度系统研究

质量小于65的二次束流强度系统研究

Phase transition in odd-N Pd-isotopes

第九届全国核物理大会

作者：杨永锋 P.Roussel-Chomaz R.Bimbot 中国科学院近代物理研究所 ganil BP502714021 Caen CedexFrance IPN 91406 Orsay France

产生于中高能弹碎裂的二次束流已经广泛应用于各种各样的核物理实验中：象奇异核的基本特性(质量、半径、半衰期等)及其结构(γ谱学、中子晕等)研究和核天体物理。产生二次束流的条件在每次实验中都进行了优化选择,但只有很少的几个实...

产生于中高能弹碎裂的二次束流已经广泛应用于各种各样的核物理实验中：象奇异核的基本特性(质量、半径、半衰期等)及其结构(γ谱学、中子晕等)研究和核天体物理。产生二次束流的条件在每次实验中都进行了优化选择,但只有很少的几个实验对产生二次束流的条件进行了系统研究。本实验的目的有以下两点：〈一〉对一系列反应研究弹碎片零度的微分截面。结合以后可以得到的其它角度微分截面,从而得到弹碎片的产生截面来验证各种理论模型。〈二〉得到一系列二次束流强度的数据,这些数据可以应用于以后在基于弹碎裂的二次束流装置上所进行的实验,并推广到其它反应系统,还可以对现有的对二次束流强度进行估箅的程序给予改进。

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Chinese Physics C 2015年第11期39卷 45-49页

作者：周厚兵董国香孙小军徐甫荣 Guangxi Normal University School of Science Huzhou University School of Physics and SK Laboratory of Nuclear Physics & Technology Peking University Grand Accelerateur National d'Ions Lourds(ganil) CEA/DSM-CNRS/IN2P3 BP 55027 F-14076 Caen Cedex France

Phase transition in odd-N isotopes ^99,101,103 Pd are investigated via the E-GOS（E-Gamma Over Spin）curves, which strongly suggest a structure evolution from vibration to rotation along the yrast lines with increasing spin. Theoretical calculations have been performed for the ground state bands of ^99,101,103 Pd in the framework of the cranked shell model（CSM） and the alignment properties observed experimentally are analyzed employing this model. The results show that the phase transition in the ground state bands of ^99,101,103 Pd can be interpreted as the valence nucleons start to occupy the g9/2 proton orbitals with increasing spin which would polarize the core to a small, but rigid quadrupole deformation.

关键词： structure evolution the E-GOS curve cranked shell model

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用次级束流对硅望远镜的时间和能量定标

核技术 1993年第12期16卷 705-709页

作者：贺智勇 Steckmeyer JC Kerambrun A Angelique JC Bizard G Brou R Cussol D Patry JP Peter J Regimbart R Tamain B Vient E Cabot C Auger G Crema E Peghaire A Saint-Laurent F Gonin M Hagel K Wada R Eudes P Lebrun C Rosato E Masri Y El 中国科学院近代物理研究所 LPC Caen ISMRAIN2P3-CNRSF-14050 CaenFrance ganil BP5027F-14021 CaenFrance Cyclotron Institute Texas A and M UniversityCollege StationTX77843USA LPN Universite de Names44072 Nantes Cedex 03France Dipartimento di Scienze Fisiche Universita di NapoliI-80125 NaplesItaly ULB BruxellesBelgium

利用95MeV/u的^(16)O束产生的次级束流对半导体硅探测器进行了时间和能量定标。实验结果表明,由于次级束流提供的次级粒子种类多,飞行距离长,因此,能给探测器带来非常精确的定标。

关键词：时间定标能量定标探测器定标

Reaction Plane Determination for ^(64)Zn+^(27)Al Collisions at Intermediate Energy

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Chinese journal of nuclear physics 1994年第3期 207-210页

作者： A.Buta J.C.Angelique G.Bizard R.Brou D.Cussol A.Kerambrun J.P.Patry J.Peter R.POpescu R.Regimbart J.C.Steckmeyer B.Tamain E.Vient G.Auger C.Cabot E.Crema A.Peghaire F.Saint-Laurent M.Gonin K.Hagel R.Wada P.Eudes C.Lebrun E.Rosato Y.El Masri LPC Caen ISMRAIN2P3-CNRSF-14050 CaenFrance IFAHeavy Ion DepartmentBucharestRomania. LPC Caen ISMRAIN2P3-CNRSF-14050 CaenFrance ganil BP5027F-14021 CaenFrance Cyclotron Institute Texas A & M UniversityCollege StationTX77843USA LPN Universite de Nantes44072 Nantes Cedex 03France Dipartimento di Scienze Fisiche Universita di Napoli1-80125 NaplesItaly UCL Louvain-la-NeuveBelgium

The collective flow for 64Zn+27Al system is measured at intermediate energyby using a 4π multidetector array in conjunction with an array of Si *** have been sorted versus the impact parameter by means of global *** methods of reaction plane determination are compared:sphericity tensor method,transverse momentum analysis,and azimuthal correlation *** this system,thetransverse momentum analysis method is the best one.

关键词： Collective flow Reaction plane Transverse momentum analysis Azimuthal correlation

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用于产生放射性离子束ECR离子源(英文)

Chinese Physics C 2007年第S1期31卷 206-210页

作者： P.Jardin *** J.C.Cornell M.Dupuis C.Eleon J.L.Flambard G.Gaubert N.Lecesne P.Leherissier F.Lemagnen R.Leroy J.Y.Pacquet M.G.Saint Laurent A.C.C.Villari ganil (Grand Accélérateur National d'Ions Lourds) Bd H.BecquerelBP 5502714076 CAEN Cedex 5France

ECRIS’s dedicated to radioactive ion production must be as efficient as those used for production of stable elements,but in addition they are subject to more specific constraints such as radiation hardness, short atom-to-ion transformation time,beam purity and low *** to now,different target/ion-source systems(TISSs)have been designed,using singly-charged ECRISs,multi-charged ion sources or an association of singly-to-multi-charged *** main goals,constraints and advantages of different existing ECR setups will be compared before a more detailed description is given of the one designed for the SPIRALⅡproject and its future improvements.

关键词： electron cyclotron resonance ion source electromagnetic isotope separator radioactive nuclear beams charge breeding

Multi-guasiparticle excitations of 91Ru

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Chinese Physics C 2020年第2期44卷 80-87页

作者：郑勇 Gde France 周小红黄山柳敏良 Institute of Modern Physics Chinese Academy of SciencesLanzhou 730000China Grand Accélérateur National d’Ions Lourds(ganil) CEA/DSM-CNRS/IN2P3Bd Henri BecquerelBP 55027F-14076 Caen Cedex5France

The level structure in neutron-deficient nucleus 91Ru was investigated via the 58Ni(36Ar,2 plnγ)Ru reaction at a beam energy of 111 *** particles,neutrons,and y-rays were emitted in this reaction and detected by the DIAMANT CsI ball,Neutron Wall,and the EXOGAM Ge clover array,*** addition to the previously reported levels in 91Ru,new low-to-medium spin states were *** correlation and linear polarization measurements were performed to unambiguously determine spins and parities of the excited states in 91 *** low-spin states of 91 Ru exhibit a scheme of multi-quasiparticle excitations,which is very similar to that of the neighboring N=47 *** excitations have been interpreted in terms of the shell *** calculations performed in the configuration space(p3/2,f5/2,p1/2,g9/2)reproduce the experimental excitation energies reasonably well,supporting the interpretation of the newly assigned positive-parity states in terms of the three quasiparticle configurationsπ(g9/2)^-2v(g9/2^-1 and v(g9/2)^-3.

关键词： level structure neutron deficient nucleus low-spin states shell model three quasiparticle configuration

中能区64Zn+27Al反应中集体流的实验研究

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中能区64Zn+27Al反应中集体流的实验研究

ganil有机金属离子束流的现状报告(英文)

第九届全国核物理大会

作者：贺智勇 J.Peter J.C.Angelique A.Auger G.Bizard R.Brou A.Buta C.Cabot E.Crema D.Cussol Y.El Masri Ph.Eudes M.Gonin K.Hagel A.Kerambrum C.Lebrun A.Peghaire R.Popescu R.Regimbart E.Rosato F.Saint-Laurent J.C,Steckmeyer B.Tamain E.Vient R.Wada 中国科学院近代物理研究所 LPC Caen ISMRAIN2P3—CNRS14050 CAEN CEDEXFRANCE ganil bp5027 14021 CAEN CEDEXFRANCE Institut de Physique Nuclear UCL1348 Louvain—La—NeuveBELGIUM LPN Universite de Nantes44072 NANTES CEDEXFRANCE Cyclotron Institut Texas A&M UniversityCollege StationTX77843USA

核物质集体流的研究是重离子碰撞中很重要的一个研究课题,通过它可以探讨核物质状态方程．压缩效应和重离子碰撞动力学等．最近,我们在中能区观察到了集体流及其消失,买验是在法国 ganil 加速器上进行的,用49,57,69和79 MeV/u 的“Zn ...

核物质集体流的研究是重离子碰撞中很重要的一个研究课题,通过它可以探讨核物质状态方程．压缩效应和重离子碰撞动力学等．最近,我们在中能区观察到了集体流及其消失,买验是在法国 ganil 加速器上进行的,用49,57,69和79 MeV/u 的“Zn 束轰击Al 靶．前角3°至30°间粒子的探测由96块塑料闪烁体片组成的塑闪墙完成,塑闪墙分七环,靶距210cm．中后角30°至150°间

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Chinese Physics C 2007年第S1期31卷 85-89页

作者： P.Lehérissier C.Barué *** M.Dubois M.Dupuis J.L.Flambard P.A.Jaffres P.Jardin G.Gaubert N.Lecesne F.Lemagnen R.Leroy J.Y.Pacquet ganil (Grand Accélérateur National d'Ions Lourds) Bd H.BecquerelBP 5502714076 CAEN Cedex 5France ENSI CAEN-LCMT-6 Bd Maréchal Juin 14050 CAEN CedexFrance

Previous experiments with organo-metallic compounds like ferrocene,nickelocene and magnesocene showed that a pure spectrum must be obtained on the residual gas mass analyser before running successfully on the ion *** collaboration with the chemistry department of the University of Caen,LCMT-ENSI Caen,the synthesis of these metallocene compounds has been studied to provide enriched isotopic compounds to ganil’s *** chemical transformation yields were 90%,80% and 43%,***, chromocene,colbatocene and ruthenocene compounds have first been studied with a gas mass analyser and then successfully tested on the ECR 4M ion source at *** 15eμA of 51V11+,20eμA of 52Cr11+, 22eμA of 59Co11+,and 17eμA of 102Ru11+ were *** comparison between the results obtained on the gas mass analyser and the ion beams provided by the source has allowed us to validate this method of determining whether or not an organo-metallic compound could be a candidate for running on our ECR ion *** the ECR ion sources are tuned and used alternately on the ganil injectors,the available time for the tests is rare,so this method could be an alternative for the validation of new compounds.

关键词： organo-metallic ECRIS MIVOC

用反应^48Ca＋^254Es合成119号元素的可能性研究

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原子核物理评论 2013年第3期30卷 284-288页

作者：沈彩万 Yasuhisa Abe David Boilley 湖州师范学院理学院浙江湖州313000 RCNP Osaka University10-1 MihogaokaIbaraki567-0047/OsakaJapan ganil CEA/DSM-CNRS/IN2P3BP 55027F-14076 Caen cedex 5Franceand Univ.of CaenB.P.5186F-14032 Caen CedexFrance

利用最近发展起来的两步模型分析重离子核反应48Ca+254Es的熔合过程。在这个模型中,熔合过程被分为前后独立的两个过程,即粘连过程和形成过程。本研究组计算了对应的粘连概率和形成概率,并结合适用于蒸发过程的统计蒸发模型,计算了该反... 详细信息

利用最近发展起来的两步模型分析重离子核反应48Ca+254Es的熔合过程。在这个模型中,熔合过程被分为前后独立的两个过程,即粘连过程和形成过程。本研究组计算了对应的粘连概率和形成概率,并结合适用于蒸发过程的统计蒸发模型,计算了该反应合成119号超重元素的剩余截面,即当Elab=250.2 MeV时,得到最大剩余截面为0.7 pb。

关键词：超重核热熔合粘连概率形成概率剩余截面