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

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 

机构地区：[1]Institut fur Physik,Universitat Rostock,Albert-Einstein-Str.23,18059 Rostock,Germany [2]GSI Helmholtzzentrum fur Schwerionenforschung,Planckstr.1,64291 Darmstadt,Germany [3]Institut für Angewandte Physik,Goethe-Universität Frankfurt am Main,Max-von-Laue-Str.1,60438 Frankfurt am Main,Germany [4]Institut fur Geowissenschaften,Goethe-Universitat Frankfurt am Main,Altenhoferallee 1,60438 Frankfurt am Main,Germany [5]Helmholtz-Zentrum Dresden-Rossendorf,Bautzner Landstr.400,01328 Dresden,Germany [6]European XFEL GmbH,Holzkoppel 4,22869 Schenefeld,Germany [7]Centre for Plasma Physics,School of Mathematics and Physics,Queen’s University Belfast,University Road,Belfast BT71NN,United Kingdom [8]Institut für Kernphysik,Technische Universität Darmstadt,Schlossgartenstr.9,64289 Darmstadt,Germany [9]State Key Laboratory of Nuclear Physics and Technology,Institute of Heavy Ion Physics,Peking University,Beijing 100871,China [10]Helmholtz Institut Jena,Frobelstieg 3,07743 Jena,Germany

出　　处：《Matter and Radiation at Extremes》2024年第4期80-89,共10页极端条件下的物质与辐射（英文）

基　　金：support by the Federal Ministry of Education and Research(BMBF)under Grant No.05P21RFFA2;supported by the Helmholtz Association under Grant No.ERC-RA-0041.

摘　　要：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 ions.In this way,we determine the samples’heating dynamics and their microscopic and macroscopic structuralintegrity over a timespan of several microseconds.Connecting 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 calculations.The simultaneous diffraction measurements show no hints of any volumetric graphitization of the material,butdo indicate the onset of fracture in the diamond sample.Our 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 

分 类 号：O57[理学—粒子物理与原子核物理]