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Ground-state mass of ^(22)Al and test of state-of-the-art ab initio calculations

Chinese Physics C 2024年第3期48卷 72-78页

作者：孙铭泽于越王新鹏王猛李健国张玉虎 K.Blaum 陈祖毅陈瑞九邓涵宇付超义葛文文黄文嘉焦红扬李红蕙李宏福罗胤芳廖挺 YuALitvinov 司敏帅鹏史金阳王茜邢元明徐星徐瑚珊许甫荣袁琪 T.Yamaguchi 颜鑫亮杨建成原有进周小红周旭张敏曾奇 CAS Key Laboratory of High Precision Nuclear Spectroscopy Institute of Modern PhysicsChinese Academy of SciencesLanzhou 730000China School of Nuclear Science and Technology University of Chinese Academy of SciencesBeijing 100049China max-planck-Institut für kernphysik Saupfercheckweg 169117 HeidelbergGermany GSI Helmholtzzentrum für Schwerionenforschung Planckstraße 164291 DarmstadtGermany Advanced Energy Science and Technology Guangdong Laboratory Huizhou516007China State Key Laboratory of Nuclear Physics and Technology School of PhysicsPeking UniversityBeijing 100871China Department of Physics Saitama UniversitySaitama 338-8570Japan School of Nuclear Science and Engineering East China University of TechnologyNanchang 330013China

The ground-state mass excess of the T_(z)=−2 drip-line nucleus ^(22)Al is measured for the first time as 18103(10)keV using the newly-developed Bρ-defined isochronous mass spectrometry method at the cooler storage ring in *** new mass excess value allowed us to determine the excitation energies of the two low-lying 1+states in ^(22)Al with significantly reduced uncertainties of 51 *** compared to the analogue states in its mirror nucleus ^(22)f,the mirror energy differences of the two 1^(+)states in the ^(22)Al-^(22)f mirror pair are determined to be−625(51)keV and−330(51)*** excitation energies and mirror energy differences are used to test the state-of-the-art ab initio valence-space in-medium similarity renormalization group calculations with four sets of interactions derived from the chiral effective field *** mechanism leading to the large mirror energy differences is investigated and attributed to the occupation of theπs_(1/2) orbital.

关键词： nuclear mass Bρ-defined IMS mirror energy difference ab initio VS-IMSrG calculations chiral interactions

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质子磁荷半径:新疑难?

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Science Bulletin 2024年第4期69卷 419-421页

作者：林勇辉 Hans-Werner Hammer Ulf-G.Meiûner Helmholtz Institut für Strahlen-und kernphysik and Bethe Center for Theoretical Physics Universität BonnBonn D-53115Germany Technische Universität Darmstadt Department of PhysicsInstitut für KernphysikDarmstadt 64289Germany ExtreMe Matter institute EMMI and Helmholtz forschungsakademie Hessen für fAIr GSI Helmholtzzentrum für Schwerionenforschung GmbHDarmstadt 64291Germany institute for Advanced Simulation and Institut für kernphysik Forschungszentrum JülichJülich D-52425Germany Tbilisi State University Tbilisi 0186Georgia

The electric radius,rE,and the magnetic radius,rM,of the proton are fundamental quantities of low-energy QCD,as they are a measure of the probe-dependent size of the proton.

关键词： radius quantities fundamental

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Temperature and structure measurements of heavy-ion-heated diamond using in situ X-ray diagnostics

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Matter and radiation at Extremes 2024年第4期9卷 80-89页

作者： J.Lutgert P.Hesselbach M.Schorner V.Bagnoud r.Belikov P.Drechsel B.Heuser O.SHumphries P.Katrik B.Lindqvist C.Qu r.redmer D.riley G.Schaumann S.Schumacher A.Tauschwitz D.Varentsov K.Weyrich X.Yu B.Zielbauer Zs.Major P.Neumayer D.Kraus Institut fur Physik Universitat RostockAlbert-Einstein-Str.2318059 RostockGermany GSI Helmholtzzentrum fur Schwerionenforschung Planckstr.164291 DarmstadtGermany Institut für Angewandte Physik Goethe-Universität Frankfurt am MainMax-von-Laue-Str.160438 Frankfurt am MainGermany Institut fur Geowissenschaften Goethe-Universitat Frankfurt am MainAltenhoferallee 160438 Frankfurt am MainGermany Helmholtz-Zentrum Dresden-rossendorf Bautzner Landstr.40001328 DresdenGermany European XfEL GmbH Holzkoppel 422869 SchenefeldGermany Centre for Plasma Physics School of Mathematics and PhysicsQueen’s University BelfastUniversity RoadBelfast BT71NNUnited Kingdom Institut für kernphysik Technische Universität DarmstadtSchlossgartenstr.964289 DarmstadtGermany State Key Laboratory of Nuclear Physics and Technology Institute of Heavy Ion PhysicsPeking UniversityBeijing 100871China Helmholtz Institut Jena Frobelstieg 307743 JenaGermany

We present in situ measurements of spectrally resolved X-ray scattering and X-ray diffraction from monocrystalline diamond samples heatedwith an intense pulse of heavy *** this way,we determine the samples’heating dynamics and their microscopic and macroscopic structuralintegrity over a timespan of several *** the ratio of elastic to inelastic scattering with state-of-the-art density functionaltheory molecular dynamics simulations allows the inference of average temperatures around 1300 K,in agreement with predictions fromstopping power *** simultaneous diffraction measurements show no hints of any volumetric graphitization of the material,butdo indicate the onset of fracture in the diamond *** experiments pave the way for future studies at the facility for Antiproton andIon research,where a substantially increased intensity of the heavy ion beam will be available.

关键词： heated intense structure

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Meson-production experiments at COSY-Jülich

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Chinese Physics C 2010年第9期34卷 1263-1268页

作者： M.Büscher institute für kernphysik and Jülich Center for Hadron Physics

Selected results from experiments at COSY-Jülich are presented： an attempt to measure the mass of the η meson with high precision （ANKE facility）,first steps towards the detection of rare η decays （WASA）,and s... 详细信息

关键词： meson production

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A STUDY ON COSMOGENIC NUCLIDES IN JILIN METEOrITE AND ITS TWO-STAGE IrrADIATION HISTOrY

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Science China Chemistry 1984年第3期 320-332页

作者：欧阳自远,G.霍依兹,M.赫布纳,T.克尔斯顿 Guiyang institute of Geochemistry Academia Sinica max-planck-Institut für kernphysik Heidelberg max-planck-Institut für kernphysik Heidelberg max-planck-Institut für kernphysik Heidelberg

forty-four burk samples of the H chondrite Jilin have been analysed for their contents ofspallogenic, trapped and radiogenic noble gases, and thirty-five samples have been determinedfor their radiocosmogenic nuclides. The Jilin meteorite has an extreme complicated history ofcosmic-ray irradiation. In the 1st-stage, the Jilin meteorite might be located between 0.2--2mbelow the surface of the parent body travelling about 8 m. y. in space and under a geometryof 2π subjected to the radiation of cosmic-ray. According to the data of60Co dating the burialdepth of all samples in the 2nd-stage can be determined and the preatmospheric form andsize of the parent body can be restored （under a geometry of 4π）. The result of this recon-struction is that, the 2nd-stage has a nearly spheric form, with a radius of 85±5 cm, weighing9.7±1.7 Ts. The position of the center of the preatmospheric body is: X=55, Y=55 andZ=39. Jilin meteorite No.1 is located at the center of the parent body and is surroundedwith the fragments. The ablation rate is estimated at about 30%. We have proposed a new modelof the two-stage irradiation, and based on the contents of21Ne-60Co in the samples, a classificationscheme can be worked out for the restoration of relative position of the samples within theparent body.

关键词： body A STUDY ON COSMOGENIC NUCLIDES IN JILIN METEOrITE AND ITS TWO-STAGE IrrADIATION HISTOrY

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Bonn-Gatchina partial wave analysis

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Chinese Physics C 2009年第12期33卷 1085-1092页

作者： A. Sarantsev Petersburg Nuclear Physics institute Helmholtz Institut für Strahlen und kernphysik

The present status of the Bonn-Gatchina partial wave analysis of the photoproduction and pion induced data is presented. An observation of signals which can be associated with new baryon resonances and possible interp... 详细信息

关键词： baryon photoproduction K-matrix analysis

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DEPTH DISTrIBUTION Of COSMOGENIC NUCLIDES IN BOrING COrE SAMPLES Of JILIN METEOrITE AND ITS COSMIC rAY IrrADIATION HISTOrY

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Science China Mathematics 1987年第8期 885-896页

作者：欧阳自远,范彩云,易惟熙,王先彬,f. BEGEMANN,T. KErSTEN,G. HEUSSEr,E. PErNICKA institute of Geochemistry Academia Sinica Guiyang institute of Geochemistry Academia Sinica Guiyang institute of Geochemistry Academia Sinica Guiyang Lanzhou institute of Geology Academia Sinica max-planck-Institut für Chemie Mainz max-planck Institut für kernphysik Heidelberg max-planck Institut für kernphysik Heidelberg max-planck Institut für kernphysik Heidelberg

Two boring cores were successfully sampled from the Jilin No. 1 meteorite in such a way that they were kept parallel or perpendicular to the surface of the 1st stage parent body, but across the center of the 2nd stage parent body. Cosmogenic nuclides(3He,20, 21, 22Ne,22Na,26Al,53Mn,50Co), radiogenic gases and trapped noble gases in the two cores have been studied in great detail, which has confirmed the two-staged cosmic ray irradiation history proposed by the authors as being typical of the Jilin Meteorite, and also justified our previous models regarding the ages, shapes and sizes of the two parent bodies related to the two stages as well as the emplacement of various samples. Investigations of spallogenic, radiogenic and trapped gases reveal that the periodic heating by the sun of the 2nd-stage parent body was responsible for the gas loss from the body while it was moving in the inter-planet spaces. The relative positions of the No.2 meteorite in the parent bodies of the two stag

关键词： body DEPTH DISTrIBUTION Of COSMOGENIC NUCLIDES IN BOrING COrE SAMPLES Of JILIN METEOrITE AND ITS COSMIC rAY IrrADIATION HISTOrY

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A Study on Cosmogenic Nuclides in the Jilin Meteorite and Its Irradiation History

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Acta Geochimica 1982年第4期 421-434页

作者：欧阳自远 G.HEUSSEr institute of Geochemistry Academia Sinica max-planck-Institut für kernphysik

44 samples of the Jilin meteorite were analyzed by various laboratories for spallogenic,radiogenic,and trapped rare gases.A non-uniform distribution has been found for the raregases of different *** have been found correlations among the spallogenic raregases,with apparent depth effects.43 samples were analyzed for their cosmogonic radionuc-lides;Co,;Al,;Cl,;K,;Mn,;Mn,and;*** have been found between;Co and;Mn and between;Co and;*** Jilin meteorite has a complex history of cosmic-ray *** to the two-stage model and the other fragments have a burying depthtwo stages,T;=*** T;=*** burying depth of all samples in the parentbody can be obtained by the content of;*** meteorite No.1 is located 20—142 cm fromthe surface,No.4 ranges from 106—134 cm,and the other fragments have a burying depthbetween 15 and 150 *** equation of the reference plane for the surface of the 1-stageJilin meteoroid is 0.24x+0.81y+0.53z+0.5=*** can also be made of;Co to determinethe burying depth of all samples in the 2-stage Jilin meteoroid（under a geometry of 4π）,and further to restore the preatmospheric form and size of the parent *** its at-mospheric passage,the Jilin had an ablation rate of ca.30%.On the basis of the two-stagemodel and the concentration of;Ne and;Co in the samples,we propose a scheme to restorethe relative position of all samples in the parent body.12 sample-distribution regions can besketched *** can be restored the relative position of all the samples in the parent bodyduring the two stages.

关键词： A Study on Cosmogenic Nuclides in the Jilin Meteorite and Its Irradiation History

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Accelerating ions with high-energy short laser pulses from submicrometer thick targets

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High Power Laser Science and Engineering 2016年第4期4卷 1-8页

作者： f.Wagner C.Brabetz O.Deppert M.roth T.Stohlker An.Tauschwitz A.Tebartz B.Zielbauer V.Bagnoud GSI Helmholtzzentrum für Schwerionenforschung GmbH Helmholtz Institut Jena Institut für kernphysik Technische Universitat Darmstadt institute for Theoretical Physics Frankfurt University

Using the example of the PHELIX high-energy short pulse laser we discuss the technical preconditions to investigate ion acceleration with submicrometer thick targets. We show how the temporal contrast of this system was improved to prevent pre-ionization of such targets on the nanosecond timescale. furthermore the influence of typical fluctuations or uncertainties of the on-target intensity on ion acceleration experiments is discussed. We report how these uncertainties were reduced by improving the assessment and control of the on-shot intensity and by optimizing the positioning of the target into the focal plane. finally we report on experimental results showing maximum proton energies in excess of 85 MeV for ion acceleration via the target normal sheath acceleration mechanism using target thicknesses on the order of one micrometer.

关键词： high-power laser technique laser-ion acceleration relativistic laser plasma interaction target normal sheath acceleration temporal contrast

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Double heavy tri-hadron bound state via delocalized π bond

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Chinese Physics C 2019年第1期43卷 96-102页

作者： Li Ma Qian Wang Ulf-G. Meiβner Helmholtz-Institut für Strahlen- und kernphysik and Bethe Center for Theoretical Physics Universit?t Bonn Institut für kernphysik Institute for Advanced Simulation and Jülich Center for Hadron Physics Forschungszentrum

Abstract:The number of exotic candidates that are beyond the conventional quark model has increased dramatically over recent *** of these can be viewed as analogues of the ***,the existence of the triton indicates that bound states formed by three hadrons could also *** illustrate this possibility,we study the DD~*K and ■ systems using the Born-Oppenheimer *** leading order,only one-pion exchange potentials are *** means that the three constituents share one virtual *** is similar to the role of the delocalizedπbond for the formation of benzene in *** solving the Schr?dinger equation,we find two three-body DD~*K and ■bound states with masses4317.92_(-4.32)^(+3.66)Me V and 11013.65_(-8.84)^(+8.49)Me V,*** masses of their■and■ analogues are 4317.92~_(-6.55)(+6.13)Me V and 11013.65_(-9.02)^(+8.68)Me V,*** the experimental side,the ■bound state could be found by analyzing the current world data on the B→J/ψππKprocess,by focusing on the J/ψπK channel.

关键词： three-body system molecular state Schrdinger equation

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