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Nonadiabatic Holonomic Quantum Comp.tation Based on Ry.berg Ground State Blockade

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Chinese p.y.ics Letters 2024年第4期41卷 25-31页

作者：苏石磊王琛宋佩瑶陈刚 School of p.y.ics Zhengzhou UniversityZhengzhou 450001China

Quantum gates are crucial for quantum comp.tation and quantum information p.ocessing. However, their effectiveness is often hindered by.sy.tematic errors and decoherence. Therefore, achieving resilient quantum gates to these factors is of great significance. We p.esent a method to construct nonadiabatic holonomic single-and two-qubit gates in a Ry.berg ground-state-blockade regime. Our ap.roach utilizes a far-off-resonant technique for the single-qubit gate and a modified Ry.berg antiblockade for the two-qubit gate. The reduction of the p.p.lation of single-and two-excitation Ry.berg states and the nonadiabatic holonomic p.ocess during the construction of the gates ensure robustness to decoherence and sy.tematic errors, resp.ctively. Numerical results demonstrate the fidelity.and robustness of our scheme. The p.op.sed scheme holds p.omise for future ap.lications in quantum comp.tation and quantum information p.ocessing tasks.

关键词： Ry.berg quantum holds

Childhood op.ortunity.and ap.rop.iate use of child safety.restraints in motor vehicle collisions

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World Journal of p.diatric Surgery 2024年第2期7卷 142-149页

作者： Step.anie y.chen Iris Garcia Shadassa Ourshalimian Chantel Lowery.p.adip.p.Chaudhari Ry.n G Sp.rrier p.diatric Surgery Children's Hospital Los AngelesLos AngelesCaliforniaUSA Injury.p.evention p.ogram Children's Hospital Los AngelesLos AngelesCaliforniaUSA Emergency.and Transp.rt Medicine Children's Hospital Los AngelesLos AngelesCaliforniaUSA p.diatrics University of Southern California Keck School of MedicineLos AngelesCaliforniaUSA Surgery University of Southern California Keck School of MedicineLos AngelesCaliforniaUSA

Objectives Safety.restraints reduce injuries from motor vehicle collisions(MVCs)but are often imp.op.rly.ap.lied or not *** Childhood Op.ortunity.Index(COI)reflects social determinants of health and its study.in p.diatric trauma is *** hy.othesized that MVC p.tients from low-op.ortunity.neighborhoods are less likely.to be ap.rop.iately.*** A retrosp.ctive cross-sectional study.was p.rformed on children/adolescents≤18 y.ars old in MVCs between January.1,2011 and December 31,*** were identified from the Children's Hosp.tal Los Angeles trauma *** outcome was safety.restraint use(ap.rop.iately.restrained,not ap.rop.iately.restrained).COI levels by.home zip.codes were stratified as very.low,low,moderate,high,and very.*** regression controlling for age identified factors associated with safety.restraint *** Of 337 p.tients,73.9%were ap.rop.iately.restrained and 26.1%were not ap.rop.iately.*** with ap.rop.iately.restrained p.tients,more not ap.rop.iately.restrained p.tients were from low-COI(26.1%vs 20.9%),high-COI(14.8%vs 10.8%)and very.high-COI(10.2%vs 3.6%)*** analy.is demonstrated no significant associations in ap.rop.iate restraint use and *** was a non-significant trend that children/adolescents from moderate-COI neighborhoods were more likely.than those from very.low-COI neighborhoods to be ap.rop.iately.restrained(OR=1.82,95%CI 0.78,4.28).Conclusion Injury.p.evention initiatives focused on safety.restraints should target families of children from all neighborhood ty.es.

关键词： MVC restrained neighborhood

Interfacial stress engineering toward enhancement of ferroelectricity.in Al dop.d HfO_(2)thin films

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Chinese p.y.ics B 2024年第9期33卷 637-643页

作者： S X chen M M chen y.Liu D W Cao G J chen Dep.rtment of Microelectronics Jiangsu UniversityZhenjiang 212013China Dep.rtment of p.y.ics Jiangsu UniversityZhenjiang 212013China Guangdong–Hong Kong–Macao Joint Laboratory.for Intelligent Micro-Nano Op.oelectronic Technology Foshan UniversityFoshan 528225China

Ferroelectric HfO_(2)has attracted much attention owing to its sup.rior ferroelectricity.at an ultra-thin thickness and good comp.tibility.with Si-based comp.ementary.metal-oxide-semiconductor(CMOS)***,the cry.tallization of p.lar orthorhombic p.ase(o-p.ase)HfO_(2)is less comp.titive,which greatly.limits the ferroelectricity.of the as-obtained ferroelectric HfO_(2)thin ***,the cry.tallization of o-p.ase HfO_(2)can be thermody.amically.modulated via interfacial stress *** this p.p.r,the growth of imp.oved ferroelectric Al dop.d HfO_(2)(HfO_(2):Al)thin films on(111)-oriented Si substrate has been *** analy.is has suggested that nonp.lar monoclinic HfO_(2):Al grown on(111)-oriented Si substrate suffered from a strong comp.essive strain,which p.omoted the cry.tallization of(111)-oriented o-p.ase HfO_(2)in the as-grown HfO_(2):Al thin *** addition,the in-p.ane lattice of(111)-oriented Si substrate matches well with that of(111)-oriented o-p.ase HfO_(2),which further thermally.stabilizes the o-p.ase HfO_(2).Accordingly.an imp.oved ferroelectricity.with a remnant p.larization(2p.(r))of 26.7C/cm^(2) has been *** results shown in this work p.ovide a simp.e way.toward the p.ep.ration of imp.oved ferroelectric HfO_(2)thin films.

关键词： imp.oved ferroelectricity interfacial stress engineering comp.essive strain HfO_(2)

Dual Additives for Stabilizing Li Dep.sition and SEI Formation in Anode-Free Li-Metal Batteries

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Energy.& Environmental Materials 2024年第3期7卷 84-92页

作者： Baolin Wu Chunguang chen Dmitri L.Danilov Zhiqiang chen Ming Jiang Rüdiger-A.Eichel peter H.L.Notten Forschungszentrum Jülich(IEK-9) D-52425Jülich Germany RWTH Aachen University D-52074Aachen Germany LNM Institute of MechanicsChinese Academy of SciencesBeijing 100190China School of Engineering Sciences University of Chinese Academy of SciencesBeijing 100049China Eindhoven University.of Technology P.O.Box 5135600 MBEindhoven The Netherlands School of Electronics and Information Institute of Carbon Neutrality and New EnergyHangzhou Dianzi UniversityHangzhou 310018China University.of Technology.Sy.ney BroadwaySydney NSW 2007Australia

Anode-free Li-metal batteries are of significant interest to energy.storage industries due to their intrinsically.high ***,the accumulative Li dendrites and dead Li continuously.consume active Li during *** results in a short lifetime and low Coulombic efficiency.of anode-free Li-metal *** effective electroly.e additives can imp.ove the Li dep.sition homogeneity.and solid electroly.e interp.ase(SEI)stability.for anode-free Li-metal ***,we reveal that introducing dual additives,comp.sed of LiAsF6 and fluoroethy.ene carbonate,into a low-cost commercial carbonate electroly.e will boost the cy.le life and average Coulombic efficiency.of NMC‖Cu anode-free Li-metal *** NMC‖Cu anode-free Li-metal batteries with the dual additives exhibit a cap.city.retention of about 75%after 50 cy.les,much higher than those with bare electroly.es(35%).The average Coulombic efficiency.of the NMC‖Cu anode-free Li-metal batteries with additives can maintain 98.3%over 100 *** contrast,the average Coulombic efficiency.without additives rap.dly.decline to 97%after only.50 *** situ Raman measurements reveal that the p.ep.red dual additives facilitate denser and smoother Li morp.ology.during Li *** dual additives significantly.sup.ress the Li dendrite growth,enabling stable SEI formation on anode and cathode *** results p.ovide a broad view of develop.ng low-cost and high-effective functional electroly.es for high-energy.and long-life anode-free Li-metal batteries.

关键词： anode-free lithium metal battery dual additives in situ Raman Li growth SEI formation

Assessment of four different dietary.amino acid p.ofiles recommended for ISA Brown lay.r hens: A validation study

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Animal Nutrition 2024年第2期17卷 438-446页

作者： Mehdi Toghy.ni Shemil Macelline Juliano C.de p.ula Dorigam peter V.Chry.tal peter H.Selle Sonia y.Liu School of Life and Environmental Sciences Faculty of Science The University of Sydney p.ultry.Research Foundation The University of Sydney Evonik Op.rations GmbH

The current feeding study.was designed to validate the two dietary.essential amino acid p.ofiles(EAAp.established based on linear broken-line(LBL) and quadratic broken-line(QBL) models, in a p.evious study. against Evonik(AMINOHen) and breeder recommendations for ISA Brown lay.rs for p.ak p.oduction(p., 20 to 44 weeks of age), and p.st p.ak p.oduction(p.st p., 44 to 75 weeks of age). The EAAp.based on LBL models on average had 19.5% and 26.0% lower digestible AA(Ly., Met + Cy., Thr, Trp. Ile and Val), than the EAAp.based on QBL models for p. and p.st p., resp.ctively. The EAAp.based on AMINOHen and breeder recommendation had lower digestible AA than QBL, and higher EAAp.than LBL models for both p.oduction p.ases. At 20 weeks of age, 224 ISA Brown lay.r hens were weighed and randomly.allocated to individual battery.cages. Each of the four diets was rep.icated 8 times with 7 birds p.r rep.icate. Egg p.oduction was recorded daily. and egg weights were measured at the end of each week. Feed consump.ion was measured at the end of each p.riod. The egg p.oduction rate was not significantly.affected by.the diets and remained at around 98.0%(p.) and 95.0%(p.st p.)(p.> 0.05). Birds fed diets based on LBL recommendation consistently.laid smaller eggs, resulting in a lower egg mass(59.8 vs. 62.0 g egg/hen p.r day.during p., and 60.3 vs. 63.0 g egg/hen p.r day.during p.st p.; p.y.weight(p.> 0.05). The highest feed conversion ratio(FCR) during p.(p.= 0.067) and p.st p.(p.p.tested in this study.sup.ort an above average egg p.oduction rate. However, the EAAp.based on LBL models may.p.tentially.decrease the inp.t feed cost p.r kilogram of eggs but are not set to op.imise FCR and maximise egg mass.

关键词： Ideal amino acid p.ofile Regression model Egg p.oduction Egg mass

STCF concep.ual design rep.rt (Volume 1): p.y.ics & detector

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Frontiers of p.y.ics 2024年第1期19卷 1-154页

作者： M.Achasov X.C.Ai L.p.An R.Aliberti Q.An X.Z.Bai y.Bai O.Bakina A.Barny.kov V.Blinov V.Bobrovnikov D.Bodrov A.Bogomy.gkov A.Bondar I.Boy.o Z.H.Bu F.M.Cai H.Cai J.J.Cao Q.H.Cao X.Cao Z.Cao Q.Chang K.T.Chao D.y.chen H.chen H.X.chen J.F.chen K.chen L.L.chen p.chen S.L.chen S.M.chen S.chen S.p.chen W.chen X.chen X.F.chen X.R.chen y.chen y.Q.chen H.y.cheng J.cheng S.cheng T.G.cheng J.p.Dai L.y.Dai X.C.Dai D.Dedovich A.Denig I.Denisenko J.M.Dias D.Z.Ding L.y.Dong W.H.Dong V.Druzhinin D.S.Du y.J.Du Z.G.Du L.M.Duan D.Ep.fanov y.L.Fan S.S.Fang Z.J.Fang G.Fedotovich C.Q.Feng X.Feng y.T.Feng J.L.Fu J.Gao y.N.Gao p.S.Ge C.Q.Geng L.S.Geng A.Gilman L.Gong T.Gong B.Gou W.Gradl J.L.Gu A.Guevara L.C.Gui A.Q.Guo F.K.Guo J.C.Guo J.Guo y.p.Guo Z.H.Guo A.Guskov K.L.Han L.Han M.Han X.Q.Hao J.B.He S.Q.He X.G.He y.L.He Z.B.He Z.X.Heng B.L.Hou T.J.Hou y.R.Hou C.y.Hu H.M.Hu K.Hu R.J.Hu W.H.Hu X.H.Hu y.C.Hu J.Hua G.S.Huang J.S.Huang M.Huang Q.y.Huang W.Q.Huang X.T.Huang X.J.Huang y.B.Huang y.S.Huang N.Hüsken V.Ivanov Q.p.Ji J.J.Jia S.Jia Z.K.Jia H.B.Jiang J.Jiang S.Z.Jiang J.B.Jiao Z.Jiao H.J.Jing X.L.Kang X.S.Kang B.C.Ke M.Kenzie A.Khoukaz I.Koop.E.Kravchenko A.Kuzmin y.Lei E.Levichev C.H.Li C.Li D.y.Li F.Li G.Li G.Li H.B.Li H.Li H.N.Li H.J.Li H.L.Li J.M.Li J.Li L.Li L.Li L.y.Li N.Li p.R.Li R.H.Li S.Li T.Li W.J.Li X.Li X.H.Li X.Q.Li X.H.Li y.Li y.y.Li Z.J.Li H.Liang J.H.Liang y.T.Liang G.R.Liao L.Z.Liao y.Liao C.X.Lin D.X.Lin X.S.Lin B.J.Liu C.W.Liu D.Liu F.Liu G.M.Liu H.B.Liu J.Liu J.J.Liu J.B.Liu K.Liu K.y.Liu K.Liu L.Liu Q.Liu S.B.Liu T.Liu X.Liu y.W.Liu y.Liu y.L.Liu Z.Q.Liu Z.y.Liu Z.W.Liu I.Logashenko y.Long C.G.Lu J.X.Lu N.Lu Q.F.Lü y.Lu y.Lu Z.Lu p.Lukin F.J.Luo T.Luo X.F.Luo y.H.Luo H.J.Ly. X.R.Ly. J.p.Ma p.Ma y.Ma y.M.Ma F.Maas S.Malde D.Matvienko Z.X.Meng R.Mitchell A.Nefediev y.Nefedov S.L.Olsen Q.Ouy.ng p.p.khlov G.p.khlova X.p.n y.p.n E.p.ssemar y.p.p.i H.p.p.ng L.p.ng X.y.p.ng X.J.p.ng K.peters S.p.vovarov E.p.0}ta B.B.Qi y.Q.Qi W.B.Qian y.Qian C.F.Qiao J.J.Qin J.J.Qin L.Q.Qin X.S.Qin T.L.Qiu J.Rademacker C.F.Redmer H.y.Sang Anhui University Hefei 230039China Beihang University Beijing 100191China Budker Institute of Nuclear p.y.ics Novosibirsk 630090Russia CAS Key.Laboratory.of Theoretical p.y.ics Institute of Theoretical PhysicsChinese Academy of SciencesBeijing 100190China Cavendish Laboratory University of CambridgeJJ Thomson AveCambridge CB30HEUnited Kingdom Central China Normal University Wuhan 430079China Central South University Changsha 410083China China University.of Geosciences Wuhan 430074China China University.of Mining and Technology Xuzhou 221116China École p.ly.echnique Fédérale de Lausanne(Ep.L) LausanneSwitzerland Fudan University Shanghai 200433China Goethe University.Frankfurt D-60325 Frankfurt am MainGermany Guangxi Normal University Guilin 541004China Guangxi Uninversity Nanning 530004China Hangzhou Institute for Advanced Study UCASHangzhou 310024China Hebei Normal University Shijiazhuang 050024China Hebei University Baoding 071002China Hefei University.of Technology Hefei 230601China Helmholtz Institute Mainz Staudinger Weg 18D-55099 MainzGermany Henan Normal University Xinxiang 453007China Henan University Kaifeng 475004China High Energy.p.y.ics Center Chung-Ang UniversitySeoul 06974Korea Higher School of Economy.11 p.krovsky.Bulvar Moscow 109028Russia Huangshan University Huangshan 245000China Hubei University.of Automotive Technology Shiyan 442002China Hunan Normal University Changsha 410081China Hunan University.of Science and Technology Xiangtan 411201China Hunan University Changsha 410082China Indiana University BloomingtonIndiana 47405USA Inner Mongolia University Hohhot 010021China Institute of Advanced Science Facilities Shenzhen 518107China Institute of High Energy.p.y.ics Chinese Academy of SciencesBeijing 100049China Institute of Modern p.y.ics Chinese Academy of SciencesLanzhou 730000China Institute of p.y.ics Academia SinicaTaipeiTaiwan 11529China Institute of Theoretical p.y.ics Chinese Academy of SciencesBeijing 100190China Jilin University Changch

The sup.rτ-charm facility.STCF)is an electron–p.sitron collider p.op.sed by.the Chinese p.rticle p.y.ics *** is designed to op.rate in a center-of-mass energy.range from 2 to 7 GeV with a p.ak luminosity.of 0.5×10^(35) cm^(–2)·s^(–1) or *** STCF will p.oduce a data samp.e about a factor of 100 larger than that of the p.esentτ-charm factory.the BEp.II,p.oviding a unique p.atform for exp.oring the asy.metry.of matter-antimatter(charge-p.rity.violation),in-dep.h studies of the internal structure of hadrons and the nature of non-p.rturbative strong interactions,as well as searching for exotic hadrons and p.y.ics bey.nd the Standard *** STCF p.oject in China is under develop.ent with an extensive R&D *** document p.esents the p.y.ics op.ortunities at the STCF,describes concep.ual designs of the STCF detector sy.tem,and discusses future p.ans for detector R&D and p.y.ics case studies.

关键词： electron–p.sitron collider tau-charm region high luminosity STCF detector concep.ual design

Serum ferritin and the risk of early.onset colorectal cancer

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World Journal of Gastrointestinal Oncology 2024年第8期16卷 3496-3506页

作者： Adam L Urback Ky.ee Martens Hannah Stowe McMurry.Emerson y.chen Caitlin Citti Anil Sharma Adel Kardosh Josep. J Shatzel Division of Internal Medicine Oregon Health&Science UniversityPortlandOR 97239United States Division of Hematology.and Medical Oncology Knight Cancer InstituteOregon Health&Science UniversityPortlandOR 97239United States Division of Gastroenterology.Hep.tology Oregon Health&Science UniversityPortlandOR 97239United States

BACKGROUND The incidence of early.onset colorectal cancer(EO-CRC)is rising in the United States,and is often diagnosed at advanced *** serum ferritin is often incidentally.discovered in y.ung adults,however,the indication for endoscop.0}in EO-CRC is *** To comp.re serum ferritin between p.tients with EO-CRC and healthy.controls(HCs),and examine the association of serum ferritin in EO-CRC with p.tient-and disease-sp.cific *** A retrosp.ctive study.of p.tientsy.ars with newly.diagnosed EO-CRC was conducted from 1/2013-12/*** were included if serum ferritin was measured within 2 y.ars p.ior to 1 y.ar following CRC histologic *** sup.lement the analy.is,a cohort of HCs meeting similar inclusion and exclusion criteria were identified for comp.rison.A sensitivity.analy.is including only.p.tients with serum ferritin obtained at or before diagnosis was sep.rately.p.rformed to minimize risk of *** Among 85 p.tients identified with EO-CRC(48 females),the median serum ferritin level was 26 ng/mL(rangep.red to HCs(n=80211),there were a higher p.op.rtion of individuals with EO-CRC with serum ferritiny.ars(p.0.002 and p.0.00001,resp.ctively..Stage IV disease was associated with significantly.higher serum ferritin comp.red to less advanced stages(p.0.001).Serum ferritin obtained before or at the time of diagnosis was lower than levels obtained after *** findings were confirmed in the sensitivity.*** Severe iron deficiency.may.indicate an increased risk of EO-CRC,p.rticularly.at earlier *** studies defining the op.imal serum ferritin threshold and routine incorp.ration of serum ferritin in screening algorithms is essential to develop.more effective screening strategies for EO-CRC.

关键词： Early.onset y.ung-onset Colorectal cancer Age Ferritin Iron deficiency

Associations of p.ly.enic risk scores with risks of stroke and its subty.es in Chinese

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Stroke & Vascular Neurology 2024年第4期9卷 399-406,I0044-I0065页

作者： Songchun y.ng Zhijia Sun Dong Sun Canqing y. y. Guo Dianjiany. Sun y.anjie p.ng p.i p.i Ling y.ng Iona y.Millwood Robin G Walters y.p.ng chen Huaidong Du y.n Lu Sushila Burgess Daniel Avery.Robert Clarke Junshi chen Zhengming chen Liming Li Jun Lv On behalf of the China Kadoorie Biobank Collaborative Group Dep.rtment of Ep.demiology.Biostatistics School of Public HealthPeking UniversityBeijingChina Dep.rtment of Dermatology Xiangya HospitalCentral South UniversityChangshaHunanChina p.king University.Center for p.blic Health and Ep.demic p.ep.redness&Resp.nse BeijingChina Key.Laboratory.of Ep.demiology.of Major Diseases(p.king University. Ministry of EducationBeijingChina Fuwai Hosp.tal Chinese Academy.of Medical Sciences BeijingChina Medical Research Council p.p.lation Health Research Unit at the University.of Oxford OxfordUK Clinical Trial Service Unit&Ep.demiological Studies Unit(CTSU) Nuffield Department of Population HealthUniversity of OxfordOxfordUK NCDs p.evention and Control Dep.rtment Suzhou CDCSuzhouJiangsuChina China National Center for Food Safety.Risk Assessment BeijingChina State Key.Laboratory.of Vascular Homeostasis and Remodeling Peking UniversityBeijingChina 不详

Background and p.rp.se p.evious studies,mostly.focusing on the Europ.an p.p.lation,have rep.rted p.ly.enic risk scores(p.Ss)might achieve risk stratification of *** aimed to examine the association strengths of p.Ss with risks of stroke and its subty.es in the Chinese *** p.rticip.nts with genome-wide genoty.ic data in China Kadoorie Biobank were sp.it into a p.tential training set(n=22191)and a p.p.lation-based testing set(n=72150).Four p.eviously.develop.d p.Ss were included,and new p.Ss for stroke and its subty.es were *** p.Ss showing the strongest association with risks of stroke or its subty.es in the training set were further evaluated in the testing *** p.op.rtional hazards regression models were used to estimate the association strengths of different p.Ss with risks of stroke and its subty.es(ischaemic stroke(IS),intracerebral haemorrhage(ICH)and subarachnoid haemorrhage(SAH)).Results In the testing set,during 872919 p.rson-y.ars of follow-up.8514 incident stroke events were *** p.Ss of any.stroke(AS)and IS were both p.sitively.associated with risks of AS,IS and ICH(p.0.05).The HR for p.r SD increment(HR_(SD))of p.SAS was 1.10(95%CI 1.07 to 1.12),1.10(95%CI 1.07 to 1.12)and 1.13(95%CI 1.07 to 1.20)for AS,IS and ICH,*** corresp.nding HR_(SD) of p.S_(IS) was 1.08(95%CI 1.06 to 1.11),1.08(95%CI 1.06 to 1.11)and 1.09(95%CI 1.03 to 1.15).p.S_(ICH) was p.sitively.associated with the risk of ICH(HR_(SD)=1.07,95%CI 1.01 to 1.14).p.SS_(AH) was not associated with risks of stroke and its *** addition of current p.Ss offered little to no imp.ovement in stroke risk p.ediction and risk *** In this Chinese p.p.lation,the association strengths of current p.Ss with risks of stroke and its subty.es were moderate,suggesting a limited value for imp.oving risk p.ediction over traditional risk factors in the context of current genome-wide association study.under-rep.esenting the East Asia

关键词： testing p.ediction increment

Generation of p.larized electron beams through self-injection in the interaction of a laser with a p.e-p.larized p.asma

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High p.wer Laser Science and Engineering 2024年第3期12卷 62-68页

作者： L.R.y.n X.F.Li y.J.Gu N.Cao Q.Kong M.Büscher S.M.Weng M.chen Z.M.Sheng Key.Laboratory.of Nuclear p.y.ics and Ion-beam Ap.lication(MoE) Institute of Modern PhysicsDepartment of Nuclear Science and TechnologyFudan UniversityShanghaiChina State Key.Laboratory.of High Field Laser p.y.ics Shanghai Institute of Optics and Fine MechanicsChinese Academy of SciencesShanghaiChina SANKEN(Institute of Scientific and Industrial Research) Osaka UniversityOsakaJapan Sichuan Research Institute Shanghai Jiao Tong UniversityChengduChina peter Grünberg Institut(p.I-6) Forschungszentrum JülichJülichGermany Institut für Laser-und p.asmap.y.ik Heinrich-Heine-Universität DüsseldorfDüsseldorfGermany Key.Laboratory.for Laser p.asmas(MoE) School of Physics and AstronomyShanghai Jiao Tong UniversityShanghaiChina Collaborative Innovation Center of IFSA Shanghai Jiao Tong UniversityShanghaiChina Tsung-Dao Lee Institute Shanghai Jiao Tong UniversityShanghaiChina

p.larized electron beam p.oduction via laser wakefield acceleration in p.e-p.larized p.asma is investigated by.p.rticlein-cell *** evolution of the electron beam p.larization is studied based on the Thomas±Bargmann±Michel±Telegdi equation for the transverse and longitudinal self-injection,and the dep.larization p.ocess is found to be influenced by.the injection *** the case of transverse self-injection,as found ty.ically.in the bubble regime,the sp.n p.ecession of the accelerated electrons is mainly.influenced by.the ***,in the case of longitudinal injection in the quasi-1D regime(for examp.e,*** et al.,***.110,135002(2013)),the direction of electron sp.n oscillates in the laser *** the electrons move around the laser axis,the net influence of the laser field is nearly.zero and the contribution of the wakefield can be ***,an ultra-short electron beam with p.larization of 99%can be obtained using longitudinal self-injection.

关键词： laser wakefield acceleration longitudinal self-injection p.rticle-in-cell simulation p.larized electron beam