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Cross-Correlation of Excitation Functions for Different Fragments and Different Scattering Angles in ^27Al（^19F,x）y Reactions

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Chinese Physics Letters 2008年第4期25卷 1251-1254页

作者：韩建龙王琦白真董玉川李松林段利敏徐瑚珊徐华根陈若富吴和宇李志常路秀琴赵葵周平刘建成许国基 sergey yu kun Institute of Modern Physics Chinese Academy of Sciences Lanzhou 730000 Graduate School of Chinese Academy of Sciences Beijing 100049 China Institute of Atomic Energy Beijing 102413 Centro de Ciencias Fisicas National University of Mexico (UNAM) Cuernavaca Mexico Center for Nonlinear Physics RSPhysSE The Australian National University Canberra ACT 0200 Australia

Excitation functions have been measured for different projectile-like fragments produced in ^27Al（^19F, x ）y reactions at incident energies from 110. 25 to 118. 75 Me V in 250 ke V steps. Strong cross section fluctuations of the excitation functions are observed. The cross-correlation coefficients of the excitation functions for different atomic number Z and for different scattering angle θcm have been deduced. These coefficients are much larger than the statistical theoretical calculated ones. This indicates that there are strong correlations between different exit channels in the dissipative heavy ion collision of ^27Al（^19F, x）y.

关键词： supernova explosion proto-neutron star shock wave

Largely Deformed Dinuclear System Formed in ^19F ＋^27Al Dissipative Collision

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Chinese Physics Letters 2006年第10期23卷 2706-2709页

作者：韩建龙王琦董玉川李松林段利敏徐湖珊徐华根陈若富白真吴和宇李志常路秀琴赵葵周平刘建成许国基 sergey yu kun Institute of Modern Physics Chinese Academy of Sciences Lanzhou 730000 China Institute of Atomic Energy Beijing 102413 Graduate School of Chinese Academy of Sciences Beijing 100049 Centro de Ciencias Ffsicas National University of Mexico (UNAM) Cuernavaca Mexico Center for Nonlinear Physics RSPhysSE The Australian National University Canberra ACT 0200 Australia

Excitation functions are measured for different charge products of the ^19F＋^27AI reaction in the laboratory energy range 110.25-118.75MeV in steps of 250keV at θlab=57°,31° and -29°. The coherence rotation angular velocities of the intermediate dinuclear systems formed in the reaction are extracted from the cross section energy autocorrelation functions. Compared the angular velocity extracted from the experimental data with the ones deduced from the sticking limit, it is indicated that a larger deformation of the intermediate dinuclear system exists.

关键词： Angular velocity

^(19)F+^(27)Al耗散反应产物截面测量中的不重复性

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高能物理与核物理 2006年第2期30卷 108-112页

作者：韩建龙王琦董玉川李松林段利敏吴和宇徐华根陈若富徐瑚珊白真李志常路秀琴赵葵周平刘建成许国基 sergey yu kun 中国科学院近代物理研究所中国原子能科学研究院北京102413 Centro de Ciencias Fisicas Campus Morelos UNAMCuernavacaMoralesMexico Nonlinear Physics Group and Department of Theoretical PhysicsRSPhysSEANUCanberraACT 0200Australia

在中国原子能科学研究院的HI-13串列静电加速器上完成了114MeV和118．75MeV的19F+27Al 耗散反应产物B,C,N,O,F,Ne,Na和Mg的微分截面测量．条形27Al同位素靶的大小尺寸为 10mm×50mm,平均厚度约67μg／cm2．固定入射束流19F的能量,通过... 详细信息

在中国原子能科学研究院的HI-13串列静电加速器上完成了114MeV和118．75MeV的19F+27Al 耗散反应产物B,C,N,O,F,Ne,Na和Mg的微分截面测量．条形27Al同位素靶的大小尺寸为 10mm×50mm,平均厚度约67μg／cm2．固定入射束流19F的能量,通过移动靶位,先后轰击了靶上20个不同的位置．实验结果表明,在弹靶系统、入射能量以及探测系统都相同的多次独立的微分截面测量中,截面的涨落不呈现高斯型几率分布．截面测量的这种不重复现象难以用有限计数率的统计性质来解释．

关键词：耗散反应产物微分截面几率分布统计性质

^19F＋^27Al耗散反应中双核系统的转动与衰变

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高能物理与核物理 2005年第12期29卷 1142-1145页

作者：韩建龙王琦董玉川李松林段利敏吴和宇徐华根陈若富徐瑚珊白真李志常路秀琴赵葵周平刘建成 sergey yu kun 中国科学院近代物理研究所中国原子能科学研究院北京102413 Centro de Ciencias Fisicas

测量了19F+27Al耗散反应产物B,C,N,O,F和Ne的激发函数,入射束流的能量从110.25MeV 到118.75MeV,能量步长为250keV.用能量自关联函数方法从激发函数中提取了各反应产物的平均衰变宽度,利用同时考虑反应中所形成的中间双核系统的转动特性... 详细信息

测量了19F+27Al耗散反应产物B,C,N,O,F和Ne的激发函数,入射束流的能量从110.25MeV 到118.75MeV,能量步长为250keV.用能量自关联函数方法从激发函数中提取了各反应产物的平均衰变宽度,利用同时考虑反应中所形成的中间双核系统的转动特性和衰变特性而发展了的Ericson核反应统计理论,讨论了19F+27Al耗散反应中双核系统随时间的演化过程.

关键词：激发函数耗散反应双核系统相干宽度相干转动

^(19)F+^(27)Al耗散反应中双核系统的转动与形变

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高能物理与核物理 2006年第7期30卷 612-615页

作者：韩建龙王琦董玉川李松林段利敏吴和宇徐华根陈若富徐瑚珊白真李志常路秀琴赵葵周平刘建成 sergey yu kun 中国科学院近代物理研究所中国原子能科学研究院北京102413 Centro de Ciencias Fisicas Campus Morelos UNAM CuernavacaMoralesMexico Nonlinear Physics Group and Department of Theoretical PhysicsRSPhysSEANUCanberraACT 0200Australia

测量了19F+27Al耗散反应产物B,C,N,O,F和Ne的激发函数,入射束流的能量从110．25MeV 到118．75MeV,能量步长为250keV．从产物的能量自关联函数中提取了反应中所形成的中间双核系统的转动惯量,与相粘模型计算的刚体转动惯量相比较,结果表... 详细信息

测量了19F+27Al耗散反应产物B,C,N,O,F和Ne的激发函数,入射束流的能量从110．25MeV 到118．75MeV,能量步长为250keV．从产物的能量自关联函数中提取了反应中所形成的中间双核系统的转动惯量,与相粘模型计算的刚体转动惯量相比较,结果表明形成的双核系统有大的形变．

关键词：激发函数耗散反应双核系统转动惯量形变

Exotic Behaviour of Angular Dispersion of Weakly Bound Nucleus ^17F at Small Angles

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Chinese Physics Letters 2006年第7期23卷 1731-1733页

作者：王琦韩建龙肖志刚徐瑚珊孙志宇胡正国张雪荧王宏伟毛瑞士袁小华徐治国赵铁成张宏斌徐华根祁辉荣王玥贾飞武丽杰丁先利高启高辉李松林白真肖国青靳根明任中洲周善贵 sergey yu-kun Institute of Modern Physics Chinese Academy of Sciences Lanzhou 730000 Graduate School of Chinese Academy of Sciences Beijing 100049 Center of Theoretical Nuclear Physics National Laboratory of Heavy-Ion Accelerator Lanzhou 730000 Department of Physics Nanjing University Nanjing 210008 Institute of Theoretical Physics Chinese Academy of Sciences Beijing 100080 Centro de Ciencias Fisicas National University of Mexico (UNAM) Cuernavaca Mexico Center for Nonlinear Physics RSPhysSE The Australian National University Canberra ACT 0200 Australia

The differential cross sections of ^17F and ^17O elastic scattering products on ^208Pb have been measured at the Radioactive Ion Beam Line at Lanzhou （RIBLL）. Two angular dispersion plots of In（ dσ/ dθ ） versus 02 are obtained from the angular distribution of the elastic scattering differential cross sections. The angular dispersion plot exhibits a clear turning point for ^17F in the range of small scattering angles 6°-2° due to its exotic structure, but for ^17O, the turning point is not observed in the same angular range. The experimental results have been compared with previous data of other groups. Systematical analysis on the available data supports the above conclusion that there is an exotic behaviour of the angular dispersion plot of weakly bound nuclei with halo or skin structure as compared with that of the ordinary nuclei near stable line. Therefore the turning point of the angular dispersion plot appears at small angle for weakly bound nuclei with halo or skin structure, and can be used as a new probe to investigate the halo and skin phenomena of weakly bound nuclei.

关键词： Exotic Behaviour Angular Dispersion Small Angles

Angular Dispersion and Deflection Function for Heavy Ion Elastic Scattering

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Chinese Physics Letters 2007年第12期24卷 3384-3387页

作者：白真王琦韩建龙肖志刚徐瑚珊孙志宇胡正国张雪荧王宏伟毛瑞士袁小华徐治国张宏斌徐华根祁辉荣王玥贾飞武丽杰丁先利高启高辉李松林李君清张亚鹏肖国青靳根明任中洲周善贵徐望范功涛张双全庞丹阳 sergey yu-kun Institute of Modern Physics Chinese Academy of Sciences Lanzhou 730000 Graduate University Chinese Academy of Sciences Beijing 100039 Center of Theoretical Nuclear Physics National Laboratory of Heavy-Ion Accelerator Lanzhou 730000 Department of Physics Nanjing University Nanjing 210093 Institute of Theoretical Physics Chinese Academy of Sciences Beijing 100080 Shanghai Institute of Applied Physics Chinese Academy of Sciences Shanghai 201800 Department of Technical Physics Peking University Beijing 100871 Centro de Ciencias Ffsicas National University of Mexico (UNAM) Cuernavaca Mexico Center for Nonlinear Physics RSPhysSE The AustrsJi~ National UniversityCanberra ACT 0200 Australia

The differential cross sections for elastic scattering products of ^17F on ^208Pb have been measured. The angular dispersion plots of ln（dσ/dθ） versus θ^2 are obtained from the angular distribution of the elastic scattering differential cross sections. Systematical analysis on the angular dispersion for the available experimental data indicates that there is an angular dispersion turning angle at forward angular range within the grazing angle. This turning angle can be clarified as nucleal rainbow in classical deflection function. The exotic behaviour of the nuclear rainbow angle offers a new probe to investigate the halo and skin phenomena.

关键词： thermoelectric half-Heusler compounds thermal conductivity

^19F＋^27Al耗散反应产物激发函数的长程关联

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原子核物理评论 2008年第4期25卷 322-326页

作者：韩建龙王琦白真董玉川李松林段利敏徐瑚珊徐华根陈若富吴和宇李志常路秀琴赵葵周平刘建成许国基 sergey yu kun 中国科学院近代物理研究所甘肃兰州730000 中国科学院研究生院北京100049 中国原子能科学研究院北京102413 Centro de Ciencias Fisicas National University of Mexico(UNAM)CuernavacaMexico Center for Nonlinear Physics RSPhysSEAustralian National UniversityCanberra ACT0200Australia

在中国原子能科学研究院的HI-13串列静电加速器上完成了19F+27Al耗散反应产物的激发函数测量。束流19F的入射能量从110.25MeV到118.75MeV,步长250keV,测量了实验室系+57°,+31°,-15°和-29°出射的类弹产物B,C,N,O,F和Ne的激发函数。... 详细信息

在中国原子能科学研究院的HI-13串列静电加速器上完成了19F+27Al耗散反应产物的激发函数测量。束流19F的入射能量从110.25MeV到118.75MeV,步长250keV,测量了实验室系+57°,+31°,-15°和-29°出射的类弹产物B,C,N,O,F和Ne的激发函数。观测到激发函数具有耗散反应的特征涨落结构,分析了激发函数之间的长程角度关联以及强烈的电荷数关联。

关键词：重离子耗散反应激发函数关联

Constructing 2D bismuth-based heterostructure for highly efficient photocatalytic CO2 reduction

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Tungsten 2025年第1期7卷 71-79页

作者： Ruo-Hang Xu Hao-yu Jiang Dan-Dan Cui kun-Rong Du Hong-Run Zhang Sheng-Jie Xu Ya-Qi Li Zhi-Zhen Ren Liang Wang Wei-Chang Hao Yi Du School of Physics and BUAA-UOW Joint Research Centre Beihang University Shenzhen Institute of Beihang University Centre for Catalysis and Clean Energy School of Environment and Science Griffith University

Reforming carbon dioxide（CO2） into fuels and valuable chemicals using solar energy holds significant potential for emission reduction and addressing energy supply *** recombination of photocarriers remains a major obstacle,however,to enhancing solar energy conversion efficiency in the photocatalytic reaction *** two-dimensional materials,constructing heterogeneous structures has emerged as an effective strategy to enhance the separation of photoexcited carriers by leveraging the internal electric field at the heterogeneous ***,we present a facile strategy for preparing Bi4NbO8Br/Bi2WO6plate-on-plate Z-scheme junctions with a strong internal electric field by in situ *** unique heterostructure facilitates efficient separation and transport of photoexcited charges by harnessing the internal electric field induced by chemical bonding at the lateral ***,the Bi4NbO8Br/Bi2WO6heterostructure exhibits enhanced CO2photoreduction properties,along with a CO yield rate of approximately 35 μmol·g-1·h-1under full light *** work offers novel insights into the synthesis of unique hetero structures intended to enhance the efficiency of photocatalytic CO2reduction.

关键词： Bi4NbO8Br/Bi2WO6 CO2 reduction Heterostructures Photocatalysts