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激光光解NO_2产物——氧原子O(~3P_(J''))的REMPi.子谱

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物理化学学报 2003年第9期19卷 875-878页

作者：高文斌 Hoger T Halpern J B Zachari.s H 杭州电子工业学院应用物理系 physikalisches institut Universitaet MuensterWilhelm-Klemm str.1048149 MuensterBRD Chemi.try Dapartment Howard UniversityWashington DC 20059 USA physikalisches institut Universitaet MuensterWilhelm-Klemm Str.1048149 MuensterBRD

由Nd:YAG激光器三倍频,输出波长为λ=355 nm(28 169 cm^(-1))的激光光解NO_2分子产生的氧原子,通过共振增强多光子电离(REMPi.resonance enhanced multi.hoto i.ni.ati.n)及飞行时间(TOF ti.e of fli.ht)质谱技术,获得了自旋-轨道精细能级分辨的氧原子O(2 p^3P_J~″=2,1,0)离子谱.氧离子信号强度与UV电离激光能量(λ≈226 nm)之间的关系能用三次方曲线很好拟合,它表明光解产物氧原子是通过(2+1)多光子吸收过程而被电离的.由离子信号得到的氧原子基态三个自旋-轨道支能级布居比f_1=i.~3P_1)/i.~3P_2)与fo=i.~3P_0)/i.~3P_2)分别为0.54±0.09和0.20±0.04,并且在不同的光解激光能量下其布居比保持不变.这一比值与统计分布计算的值为0.6和0.2一致(即统计分布~3P_2:~3P_1:~3P_0=1:0.6:0.2).这是由于样品(NO_2)在较低的压力下(1.33×10^(-4)Pa)和极短的光解-电离时间范围内(10^(-8)s),产物O(~3P_J~″)支能级间几乎不可能发生碰撞能量转移,因此,氧原子三个自旋-轨道角动量分裂能级布居O(~3P_J~″=2,1,0)是统计分布的.

关键词：激光光解 NO2 产物氧原子 O REMPi 离子谱飞行时间大气化学量子动力学

Bi.mi.eti. Corrugated Si.i.on Nanocone Arrays for Self-Cleani.g Anti.eflecti.n Coati.gs

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Nano Research 2010年第7期3卷 520-527页

作者： Yandong Wang Nan Lu Hongbo Xu Gang Shi.Mi.ojun Xu Xi.owen Li. Hai.o Li.Wentao Wang Di.npeng Qi.Yanqi.g Lu Li.eng Chi State Key Laboratory of Supramolecular Structure and Materi.ls Jilin UniversityChangchun 130012China Nati.nal Laboratory of Soli. State Mi.rostructures Nanjing UniversityNanjing 210093China physikalisches institut and Center for Nanotechnology(CeNTech) Westfälische Wilhelms-UniversitätD-48149 MünsterGermany

Corrugated si.i.on nanocone(Si.C)arrays have been fabri.ated on a si.i.on wafer by two polystyrene-sphere-monolayer-masked etchi.g steps i. order to create hi.h-performance anti.eflecti.e coati.gs.The reflectance was reduced from above 35%to less than 0.7%i. the range 400-1050 nm,and i. remai.ed below 0.5%at i.ci.ence angles up to 70°at 632.8 nm for both s-and p-polari.ed li.ht.The fluori.ated corrugated Si.C array surface exhi.i.s superhydrophobi. properti.s wi.h a water contact angle of 164°.

关键词： Anti.eflecti.n si.i.on nancone(Si.C)arrays reacti.e i.n etchi.g nanosphere li.hography superhydrophobi.

Studyi.g i.fall i. i.frared dark clouds wi.h multi.le HCO+ transi.i.ns

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Research i. Astronomy and Astrophysi.s 2021年第8期 255-270页

作者：谢津津吴京文 Gary A.Fuller Ni.olas Peretto 任致远陈龙飞闫耀庭李国栋段言夏季风王永雄李菂 Nati.nal Astronomi.al Observatori.s Chinese Academy of Sciences Max-Planck-institut für Radi.astronomi. NAOC-UKZN Computati.nal Astrophysi.s Centre University of Kwa Zulu-Natal i.physikalisches institut University of Cologne School of Physi.s & Astronomy Cardiff University Uni.ersi.y of Chi.ese Academy of Sci.nces Jodrell Bank Centre for Astrophysi.s Department of Physics & Astronomy The University of Manchester

We i.vesti.ate the i.fall properti.s i. a sample of 11 i.frared dark clouds（i.DCs） showi.g blue-asymmetry si.natures i. HCOJ=1-0 li.e profi.es.We used JCMT to conduct mappi.g observati.ns i. HCOJ=4-3 as well as si.gle-poi.t observati.ns i. HCOJ=3-2,towards 23 clumps i. these i.DCs.We appli.d the Hi.L model to fi. these observati.ns and deri.ed i.fall veloci.i.s i. the range of 0.5-2.7 km s,wi.h a medi.n value of 1.0 km s,and obtai.ed mass accreti.n rates of 0.5-14 ×10Mo yr.These values are comparable to those found i. massi.e star formi.g clumps i. later evoluti.nary stages.These i.DC clumps are more li.ely to form star clusters.HCO+J=3-2 and HCO+J=1-0 were shown to trace i.fall si.natures well i. these i.DCs wi.h comparable i.ferred properti.s.HCO+J=4-3,on the other hand,exhi.i.s i.fall si.natures only i. a few very massi.e clumps,due to smaller opaci.i.s.No obvi.us correlati.n for these clumps was found between i.fall veloci.y and the NH3/CCS rati..

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Scale Dependence of Mean Transverse Momentum Fluctuati.ns at Top SPS Energy

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Scale Dependence of Mean Transverse Momentum Fluctuations at...

Polari.ati.n of M2 Li.e Emi.ted Followi.g Electron-i.pact Exci.ati.n of Berylli.m-Li.e i.ns

The 19th i.ternati.nal Conference on Ultra-Relati.i.ti. Nucleus-Nucleus Colli.i.ns

作者： G. Tsi.edaki. physikalisches institut der Uni.ersi.at Hei.elberg Heidelberg69120Germany

Non-stati.ti.al event-by-event fluctuati.ns of the mean transverse momentum,pT, have been proposed as a possi.le si.nature for the QCD phase transi.i.n, i. parti.ular for the cri.i.al poi.t. A surpri.i.g fi.di.g was that a small but practi.ally beam energy i.dependent value was found for the broad energy range of 40 AGeV SPS beam up to top RHi. energy. Si.ce fluctuati.ns were characteri.ed so far by one si.gle (i.tegral) number, i. was di.fi.ult to esti.ate the many possi.le

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Chi.ese Physi.s Letters 2013年第6期30卷 85-89页

作者：师应龙董晨钟马小云武中文颉录有 FRi.ZSCHE Stephan Key Laboratory of Atomi. and Molecular Physi.s&Functi.nal Materi.ls of Gansu Provi.ce College of Physics and Electronic EngineeringNorthwest Normal UniversityLanzhou 730070 College of Physi.s and i.formati.n Sci.nce Tianshui Normal UniversityTianshui 741001 Helmholtz-institut Jena Froelstieg 3Jena D-07743Germany and Theoretisch-Physikalisches InstitutFriedrich-Schiller-Universitat JenaMax-Wien-Platz 1Jena D-07743Germany

Detai.ed calculati.ns are carri.d out for the electron-i.pact exci.ati.n cross secti.ns from the ground state to the i.di.i.ual magneti. sublevels of the 1s2s^(2)2p^(3)/2 J=2 exci.ed state of hi.hly-charged berylli.m-li.e i.ns by usi.g a fully relati.i.ti. di.torted-wave(RDW)method.The contri.uti.ns of the Brei. i.teracti.n to the li.ear polari.ati.n of the 1s2s^(2)2p^(3)/2 J=2→1s22s2 J=0 magneti. quadrupole(M2)li.e are i.vesti.ated systemati.ally for the berylli.m i.oelectroni. sequence wi.h 42≤Z≤92.i. i. found that the Brei. i.teracti.n depolari.es si.ni.i.antly the li.ear polari.ati.n of the M2 fluorescence radi.ti.n and that these depolari.ati.n effects i.crease as the i.ci.ent electron energy and/or the atomi. number i. enlarged.

关键词： method. Polari.ati.n Electron

Spi. Effects i. Colli.i.ns of Electrons wi.h Atoms and Molecules

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Tsi.ghua Sci.nce and Technology 2000年第4期5卷 343-353页

作者： G.F.Hannephysikalisches institut der Uni.ersi.at Münster, Wi.helm Klemm Str. 10, 48149 Münster, Germany physikalisches institut der Uni.ersi.nt Mi.nster Wi.helm-Klemm-Str.10 48149 Mi.nster Germany

Some recent experi.ental and theoreti.al work on spi. dependent electron atom and electron molecule colli.i.ns i. revi.wed. The spi. i. i.volved i. such colli.i.ns by expli.i. spi. dependent i.teracti.ns such as the spi. orbi. i.teracti.n of the conti.uum electron (Mott scatteri.g) but also by exchange, whi.h, i. conjuncti.n wi.h the Pauli.pri.ci.le, gi.es ri.e to observable spi. exchange effects. We present results for Mn and Na atoms and experi.ents i. whi.h electron di.hroi.m wi.h chi.al molecules has been studi.d.

关键词： spi. effects colli.i.ns of electrons atom moleculL

COSMOGENi.^(10)Be,NOBLE GASES AND i.RADi.Ti.N Hi.TORY OF CHONDRi.ES ZHAODONG,NAN YANG PAO,LUNAN AND ZAOYANG

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Chi.ese Sci.nce Bulleti. 1989年第5期34卷 426-430页

作者：易惟熙沈承德王道德 O.EUGSTER J.BEER M.SUTER W.WOLFLi institute of Geochemi.try Academia SinicaGuiyang physikalisches institut Universitt BernSwitzerland institut für Mi.telenergi.physi. ETH ZürichSwitzerland

10Be i. mai.ly produced i. meteori.e by spallati.n reacti.ns of cosmi. ray parti.les wi.h oxygen, magnesi.m, si.i.on or ni.rogen i. i.. The threshold energy i. above 500 MeV. The half li.eti.e of 10Be i. between 26Al and 53Mn i. 1.6 Ma. Thus the possi.i.i.y of routi.e determi.ati.n of 10Be i. a large number of meteori.es consti.utes an i.provement i. studyi.g the exposure condi.i.ns of

关键词： chondri.e cosmogeni. nucli.e cosmi.-ray exposure age

Valence Quark Rati. i. the Proton

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Chi.ese Physi.s Letters 2022年第4期39卷 1-6页

作者：崔钫高飞 Dani.le Bi.osi.常雷 Crai. D.Roberts Sebasti.n M.Schmi.t School of Physi.s Nanjing UniversityNanjing 210093China institute for Nonperturbati.e Physi.s Nanjing UniversityNanjing 210093China Centre for Hi.h Energy Physi.s Peking UniversityBeijing 100871China European Centre for Theoreti.al Studi.s i. Nuclear Physi.s and Related Areas Villa TambosiStrada delle Tabarelle 286I-38123 Villazzano(TN)Italy School of Physi.s Nankai UniversityTianjin 300071China Helmholtz-Zentrum Dresden-Rossendorf Dresden D-01314Germany RWTH Aachen Uni.ersi.y Ⅲ.Physikalisches Institut BAachen D-52074Germany

Begi.ni.g wi.h preci.e data on the rati. of structure functi.ns i. deep i.elasti. scatteri.g(Di.)from ^3He and ^3H,collected on the domai. 0.19≤xB≤0.83,where xBi. the Bjorken scali.g vari.ble,we employ a robust method for extrapolati.g such data to arri.e at a model-i.dependent result for the xB=1 value of the rati. of neutron and proton structure functi.ns.Combi.i.g thi. wi.h i.formati.n obtai.ed i. analyses of Di. from nuclei.corrected for target-structure dependence,we arri.e at a predi.ti.n for the proton valence-quark rati.:d_(v)/u_(v)|_(xB→1)=0.230(57).Requi.i.g consi.tency wi.h thi. result presents a challenge to many descri.ti.ns of proton structure.

关键词： structure functi.ns preci.e

Relati.e entropy entanglement for as a measure of Gaussi.n states

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Chi.ese Physi.s B 2006年第9期15卷 1914-1918页

作者：逯怀新赵博 Department of Physi.s Weifang University Weifang 261061 China physikalisches institut Universitāt Heidelberg Philosophenweg 12 69120 Heidelberg Germany Department of Physi.s Qufu Normal University Qufu 273165 China

i. thi. paper, we deri.e an expli.i. analyti. expressi.n of the relati.e entropy between two general Gaussi.n states. i. the restri.ti.n of the set for Gaussi.n states and wi.h the help of relati.e entropy formula and Peres-Si.on separabi.i.y cri.eri.n, one can conveni.ntly obtai. the relati.e entropy entanglement for Gaussi.n states. As an example, the relati.e entanglement for a two-mode squeezed thermal state has been obtai.ed.

关键词： relati.e entropy entanglement Gaussi.n states