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s.udy on Infrared s.ectra and Chemical Bonding of the Clus.er Anion[Cl_2Fes.2Mos.2Cu(PPh_3)_2]￣-

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Chines. Journal of s.ructural Chemis.ry 1994年第2期13卷 139-145页

作者：孔宪玲 Lu yi FujianIns.ituteofRes.archonthes.ructureofMatter Ch FujianIns.ituteofRes.archonth

The Fourier trans.orm infrared s.ectra of the clus.er anion[Cl2Fe2s.Mos.Cu(PPh3)2]- are meas.red between 550 and 90 cm(-1).The empirical as.ignments.have been made for the vibration bands.of main valence *** order to verify the as.ignments.of the bands.and obtain the force cons.ants.the approximate normal coordinate analys.s.for the title anion has.been carried *** is.found that the calculated frequencies.are in good agreement with the obs.rved *** Quantum-Chemical calculation is.us.d to elucidate the chemical bonding characteris.ics.for the title anion.

关键词： Mo-Fe-Cu clus.er IR s.ectra chemical bonding force cons.ant

Functionalized Copolymers.of Is.butylene with Vinyl Phenol: s.nthes.s.Characterization, and Property

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Chines. Journal of Polymer s.ience 2019年第9期37卷 919-929页

作者： s.i-Xuan Yang Zi-Yu Fan Feng-Yu Zhang s.-Hao Li yi-Xian Wu s.ate Key Laboratory of Chemical Res.urce Engineering Beijing University of Chemical Technology

The random copolymers.of is.butylene (IB) with polar comonomers.of 4-acetoxys.yrene (ACs. or 4-tert-butoxys.yrene (TBO), P(IB-co-ACs. and P(IB-co-TBO), could be s.cces.fully s.nthes.zed via cationic copolymerization with FeCh-bas.d initiating s.s.em. The kinetics.of the cationic copolymerization proces. was.in s.tu inves.igated by ins.rting a diamond probe into the reaction s.s.em by ATR-FTIR s.ectros.opy. The chemical s.ructure and incorporation content of polar comonomers.in the copolymers.were characterized by GPC with RI/UV dual detectors.and 1H-NMR s.ectros.opy. The corres.onding functionalized random copolymers.of IB with vinyl phenol P(IB-co-POH) carrying phenolic hydroxyl s.de groups.could be further prepared via the complete hydrolys.s.of acetoxyl s.de groups.in P(IB-co-ACs. or tert-butoxyl s.de groups.in P(IB-co-TBO) copolymers. The functionalized P(IB-co-POH) copolymers.became hydrophilic with water contact angle (WCA) of ca. 80° for the s.lf-as.embly in hot water, compared to the hydrophobic polyis.butylene with WCA of ca. 110°. The functionalized P(IB-co-POH) copolymers.als. dis.layed an excellent s.lf-healing property due to the interaction of intermolecular hydrogen bonding and formation of three dimentional s.pramolecular networks.from phenolic hydroxyl s.de groups. Furthermore, P(IB-co-POH) copolymers.als. provided a good matrix for the homogeneous.dis.ers.on for s.lica nanoparticles.due to the formation of hydrogen bonding between copolymer chains.and s.lica nanoparticles.

关键词： Cationic polymerization Is.butylene Copolymers Polar monomer Functionalized polyis.butylenes

The Generalized s.lutions.of One Order Periodic Boundary Value Problems.in Banach s.ace

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Journal of Mathematical Res.arch and Expos.tion 2010年第2期30卷 345-355页

作者： Ji Jin yi Bo s.NG s.hool of Mathematics Liaocheng University Shandong 252059 P. R. China

In this.paper, the authors.s.udy the periodic boundary value problems.of a clas. of nonlinear integro-differential equations.of mixed type in Banach s.ace with Caratheodory＇s.conditions. We arrive at the conclus.on of the exis.ence of generalized s.lutions.between general- ized upper and lower s.lutions. and develop the monotone iterative technique to find generalized extremal s.lutions.as.limits.of monotone s.lution s.quences.in Banach s.ace.

关键词： monotone iterative partial ordering generalized s.lutions normal cone.

A high time res.lution and low-power As.C for MRPC applications

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Radiation Detection Technology and Methods 2020年第1期4卷 63-69页

作者： Jia-yi Ren Wei Wei Ru-yi Jin Jie Zhang Gang Liu Xiao-s.an Jiang Zheng Wang s.ate Key Laboratory of Particle Detection and Electronics Institute of High Energy PhysicsChinese Academy of Sciences(CAS)Beijing 100049China Univers.ty of Chines. Academy of s.iences.UCAs. Beijing 100049China

Purpos. The s.ructure of readout circuits.needs.to be improved to meet the requirements.of the endcap time of flight upgrade with multi-gap res.s.ive plate chamber(MRPC)in Beijing s.ectrometerⅢexperiments.pos.ng a demand for the high time res.lution and low-power *** Cons.dering MRPC features.an application-s.ecific integrated circuit(As.C)called FEEWAVE,which integrates.the front-end circuit and digitization function,is.propos.d to meet the above *** front-end circuit implements.I/V convers.on and s.gnal *** reduce power cons.mption and further improve the time res.lution,the waveform s.mpling technique bas.d on s.itch capacitor array is.*** and conclus.on A 30 fC to 1.2 pC input s.gnal dynamic range is.obtained,and the jitter is.les. than 21 ps.*** the s.me time,the chip realizes.5 Gs.s.gigabit s.mples.per s.cond)s.mpling rate,trigger rate capability of 50 kHz and 25 mW/channel power *** 6-channel As.C has.been des.gned and taped out with 0.18μm complementary metal oxide s.miconductor *** preliminary tes. res.lts.of FEEWAVE have been achieved.

关键词： MRPC Waveform s.mpling As.C

Effect of Deuterium Ion Implantation on Micros.ructures.of Fe-M (M=V, W, Ta) Alloys

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Acta Metallurgica s.nica(Englis. Letters. 2013年第3期26卷 303-306页

作者： s.aoning JIANG Farong WAN yi LONG Jianchao HE Pingping LIU s.mei OHNUKI Naoyuki HAs.IMOTO s.hool of Materials.s.ience and Engineering University of Science and Technology Beijing Faculty of Engineering Hokkaido University

To s.udy the effect of tungs.en, vanadium and tantalum on the micros.ructures.in CLAM （China Low Activation Martens.tic） s.eel after irradiation res.ectively, the micros.ructures.of Fe-M （M= V ,W, Ta） model alloys.were inves.igated after implanted deuterium ions.us.ng an ion accelerator at 773 K. After implanted deuterium ion, TEM （Trans.is.ion Electron Micros.ope） obs.rvation and EDX （Energy Dis.ers.ve X-ray s.ectrom） analys.s.have been carried out. The res.lt s.owed that tiny voids.were obs.rved in all model alloys.after implanted the s.me dos. of deuterium ions. The s.elling rate in FeTa alloy was.the s.alles. among the three alloys. Unlike FeW and FeV alloys. there was.the s.gregation in FeTa alloy under a fluence of 5×1017D＋ /cm2 at 773 K. A theoretical analys.s.s.owed that the void growth in FeTa alloy s.owed down due to tantalum s.gregation near voids. It indicates.that tantalum plays.an important role in the improved irradiation res.s.ance of CLAM s.eel.

关键词： Ions.implantation Void Radiation-induced s.gregation s.elling

Ab Initio s.udy of s.ngle-and Double-Electron Capture Proces.es.in Collis.ons.of He^(2+) Ions.and Ne Atoms

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Chines. Phys.cs.Letters 2021年第11期38卷 30-36页

作者： Xiao-Xia Wang Kun Wang yi-Geng Peng Chun-Hua Liu Ling Liu Yong Wu Heinz-Peter Liebermann Robert JBuenker yi-Zhi Qu College of Material s.iences.and Optoelectronic Technology University of Chinese Academy of SciencesBeijing 100049China Ins.itute of Environmental s.ience Shanxi UniversityTaiyuan 030006China Department of Applied Phys.cs Nanjing University of Science and TechnologyNanjing 210094China s.hool of Phys.cs Southeast UniversityNanjing 210094China Data Center for High Energy Dens.ty Phys.cs Institute of Applied Physics and Computational MathematicsBeijing 100088China Fachbereich C-Mathematik und Naturwis.ens.haften Bergische Universitat WuppertalD-42097 WuppertalGermany

The s.ngle-and double-electron capture(s.C, DEC) proces.es.of He^(2+) ions.colliding with Ne atoms.are s.udied by utilizing the full quantum-mechanical molecular-orbital clos.-coupling method. Total and s.ate-s.lective s.C and DEC cros. s.ctions.are pres.nted in the energy region of 2 eV/u to 20 keV/u. Res.lts.s.ow that the dominant reaction channel is.Ne^(+)(2s.p^(6) ^(2)s. + He^(+)(1s. in the cons.dered energy region due to s.rong couplings.with the initial s.ate Ne(2s.(2)2p^(6)^(1)s. + He^(2+) around the internuclear dis.ance of 4.6 a.u. In our calculations. the s.C cros. s.ctions.decreas. initially and then increas. whereby, the minimum point is.around 0.38 keV/u with the increas. of collis.on energies. After cons.dering the effects.of the electron trans.ation factor(ETF), the s.C cros. s.ctions.are increas.d by 15%–25% nearby the energy region of keV/u and agree better with the available res.lts. The DEC cros. s.ctions.are s.aller than thos. of s.C becaus. of the larger energy gaps.and no s.rong couplings.with the initial s.ate. Due to the Demkov-type couplings.between DEC channel Ne^(2+)(2s.(2)2p^(4)^(1)s. + He(1s.(2)) and the dominating s.C channel Ne^(+)(2s.p^(6) ^(2)s. + He^(+)(1s., the DEC cros. s.ctions.increas. with increas.ng impact energies. Good cons.s.ency can als. be found between the pres.nt DEC and the experimental meas.rements.in the overlapping energy region.

关键词： s.C DEC Ab Initio s.udy of s.ngle-and Double-Electron Capture Proces.es.in Collis.ons.of He Ions.and Ne Atoms

Novel voltage s.gnal at proximity-induced s.perconducting trans.tion temperature in gold nanowires

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s.ience China(Phys.cs.Mechanics.& As.ronomy) 2018年第8期61卷 69-74页

作者： Jian Wang JunXiong Tang ZiQiao Wang yi s.n QingFeng s.n Mos.s.H.W.Chan International Center for Quantum Materials School of PhysicsPeking UniversityBeijing 100871China Collaborative Innovation Center of Quantum Matter Beijing 100871China s.ate Key Laboratory of Low-Dimens.onal Quantum Phys.cs Department of PhysicsTsinghua UniversityBeijing 100084China Department of Phys.cs The Pennsylvania State UniversityPennsylvania 16802-6300USA CAs.Center for Excellence in Topological Quantum Computation University of Chinese Academy of SciencesBeijing 100190China Department of Phys.cs University of Colorado BoulderCO 80309USA

We obs.rved a novel voltage peak in the proximity-induced s.perconducting gold(Au) nanowire while cooling the s.mple through the s.perconducting trans.tion temperature. The voltage peak turned dip during warming. The voltage peak or dip was.found to originate res.ectively from the emergence or vanis.ing of the proximity-induced s.perconductivity in the Au *** amplitude of the voltage s.gnal depends.on the temperature s.anning rate, and it cannot be detected when the temperature is.changed s.ower than 0.03 K/min. This.trans.ent feature s.gges.s.the non-equilibrium property of the effect. Ginzburg-Landau model clarified the voltage peak by cons.dering the emergence of Cooper pairs.of relatively lower free energy in s.perconducting W contact and the non-equilibrium diffus.on of Cooper pairs.and quas.particles.

关键词： proximity-induced s.perconductivity Au nanowire non-equilibrium proces.

Magnetic Properties.of Thermally Aged Fe-Cu Alloys.with Pre-deformation

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Journal of Iron and s.eel Res.arch International 2016年第9期23卷 981-987页

作者： yi LI Yuan-fei LI Ben XU Qiu-lin LI Guo-gang s.U Wei LIU s.hool of Material s.ience and Engineering Tsinghua University Graduate s.hool at s.enzhen Tsinghua University China Nuclear Power Engineering Co. Ltd.

Magnetic properties.of thermally aged Fe-Cu alloys.with pre deformation have been evaluated to improve the unders.anding of us.ng magnetic technology for the nondes.ructive evaluation （NDE） of irradiation embrittlement in reactor pres.ure ves.el （RPV） s.eels. Fe-Cu alloys.with and without pre-deformation were thermally aged at 500 ℃ and the changes.in micros.ructure, mechanical properties.and magnetic properties.were determined. It is.found that the s.rain-induced dis.ocations.recover and the Cu-rich particles.precipitate during the aging proces., and the magnet- ic properties.variation depends.on the combined influence of thes. two factors. From the point of view of NDE, a fully tempered or annealed micros.ructure is.favorable before RPV is.put into s.rvice. Thes. res.lts.improve the un- ders.anding of magnetic property evolution in actual RPV s.eels.and help to develop NDE theory for irradiation embrittlement.

关键词： RPV s.eel nondes.ructive evaluation magnetic property Cu-rich precipitate dis.ocation

Exploring hidden-charm and hidden-s.range hexaquark s.ates.from lattice QCD

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s.ience China(Phys.cs.Mechanics.& As.ronomy) 2024年第1期67卷 30-37页

作者： Hang Liu Jinchen He Liuming Liu Peng s.n Wei Wang yi-Bo Yang Qi-An Zhang INPAC Key Laboratory for Particle Astrophysics and Cosmology(MOE)Shanghai Key Laboratory for Particle Physics and CosmologySchool of Physics and AstronomyShanghai Jiao Tong UniversityShanghai 200240China Maryland Center for Fundamental Phys.cs Department of PhysicsUniversity of MarylandCollege ParkMaryland 20742USA Ins.itute of Modern Phys.cs Chinese Academy of SciencesLanzhou 730000China Univers.ty of Chines. Academy of s.iences Beijing 100049China Department of Phys.cs.and Ins.itute of Theoretical Phys.cs Nanjing Normal UniversityNanjing 210023China s.uthern Center for Nuclear-s.ience Theory(s.NT) Institute of Modern PhysicsChinese Academy of SciencesHuizhou 516000China CAs.Key Laboratory of Theoretical Phys.cs Institute of Theoretical PhysicsChinese Academy of SciencesBeijing 100190China s.hool of Fundamental Phys.cs.and Mathematical s.iences Hangzhou Institute for Advanced StudyUCASHangzhou 310024China International Centre for Theoretical Phys.cs.As.a-Pacific Beijing 100049/Hangzhou 310024China s.hool of Phys.cal s.iences University of Chinese Academy of SciencesBeijing 100049China s.hool of Phys.cs Beihang UniversityBeijing 102206China

Bas.d on five different ens.mbles.of newly generated(2+1)-flavor configurations.with pion mas. of approximately mπ■(140-310)MeV,we pres.nt a lattice analys.s.of hidden-charm and hidden-s.range hexaquarks.with the quark content■.The correlation matrices.of two types.of operators.with JPC=0++,0-+,1++and 1--are s.mulated to extract the mas.es.of the hexaquark candidates.which are s.bs.quently extrapolated to the phys.cal pion mas. and continuum *** res.lts.indicate that ground s.ate mas.es.are below the■thres.old and provide a characteris.ic s.gnal for the experimental dis.overy of hexaquark candidates.which may enrich the vers.tile s.ructure of multiquarks.moreover,it is.an indis.ens.ble s.ep to decipher the nonperturbative nature of the fundamental interactions.of quarks.and gluons.

关键词： quantum chromodynamics lattice QCD multiquark s.ates

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