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Measurement and Correction of K-Shell Ionization Cross Sections for Copper and Gallium by Electron Impact

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Chinese Physics Letters 2001年第6期18卷 759-760页

作者： ZHOU Chang-Geng AN Zhu luo zheng-ming Key Laboratory for Radiation Physics and Technology of Education Ministry Institute of Nuclear Science and TechnologySichuan UniversityChengdu 610064

The K-Shell ionization cross sections of Cu and Ga are measured by electron impact and the data of Ga are reported for the first *** method of a thin chemical compound target with a thick substrate is formally used in the *** influence of electrons reflected from the substrate is corrected by means of a calculation of electron transport.

关键词： experiment. formally Electron

A Bipartition Model with Single-Scattering Approximation for the Calculations of Reflection of Energetic Ions from Surfaces

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Chinese Physics Letters 1997年第1期14卷 44-46页

作者： HOU Qing TENG Li-jian luo zheng-ming Institute of Nuclear Science and Technology Sichuan Union UniversityChengdu 610064

A bipartition model for ion transport in solids has been *** the earlier bipartition model,a single-scattering approximation has been adopted and angular correlation of energy transfer has been partly taken into *** the present bipartition model,the reflection coefficients and energy spectrum of reflected ions have been *** results show that the present bipartition model gives better descriptions of reflection although it is simpler in calculation than the earlier bipartition model.

关键词： partition Approximation simpler

K-Shell Ionization of Molybdenum and Iron by Electron Bombardment

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Chinese Physics Letters 1996年第3期13卷 175-177页

作者： HE Fu-qing LONG Xian-guan PENG Xiu-feng luo zheng-ming AN Zhu Institute of Nuclear Science and Technology Sichuan UniversityChengdu 610064

K-ionization cross sections of Mo and Fe by electron impact were measured by detecting characteristic x-ray emitted by thin solid Him targets of known mass thickness with a Si(Li)*** correction of a substrate was done by bipartition model of electron *** experrmenta.1 results are compared with theoretical calculation and empirical formula calculation.

关键词： calculation. correction partition

Measurement of Zinc K-Shell Ionization Cross Sections by Electron Impact

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Chinese Physics Letters 1999年第7期16卷 505-507页

作者： TANG Chang-huan luo zheng-ming AN Zhu LI Tai-hua Open Laboratory for Radiation Physics and Technology of Education Ministry Institute of Nuclear Science and TechnologySichuan UniversityChengdu610064

Electron-induced Zn ionization cross sectionSj which are scarce,have been obtained from measurement of Ka x-ray emission at energies from near threshold to 25 *** influence of substrate of thin target on ionization cross sections has been corrected by using the bipartition model of electron *** experimental results are satisfactory as compared with empirical formula of Green and Cosslett.

关键词： Electron partition ionization

An Empirical Formula of Atomic K-Shell Ionization Cross Sections by Electron Impact

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Chinese Physics Letters 2001年第8期18卷 1053-1055页

作者： TANG Chang-Huan AN Zhu FAN Xiao-Qiang luo zheng-ming Laser Fusion Research Center CAEPMianyang 621900 Institute of Nuclear Science and Technology Sichuan UniversityKey Laboratory for Radiation Physics and Technology of Education Ministry of ChinaChengdu 610064 Institute of Nuclear Physics and Chemistry CAEPMianyang 621900

An empirical formula is proposed to describe the K-shell ionization cross sections by electron impact over a wide range of atomic numbers and overvoltages U(the ratio between the electron incident energy and the binding energy of the electrons in the K-shell).The study is based on the analysis of existing experimental data of K-shell ionization cross *** expression shows the results in good agreement with the data for Z<6 atoms as well as for 6≤Z≤79.

关键词： Electron ionization incident

Measurement and Multiple Scattering Correction of K-Shell Ionization Cross Sections of Silver by Electron Impact

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Chinese Physics Letters 2001年第4期18卷 531-532页

作者： ZHOU Chang-Geng FU Yu-Chuan AN Zhu TANG Chang-Huan luo zheng-ming Key Laboratory for Radiation Physics and Technology of Education Ministry Institute of Nuclear Science and TechnologySichuan UniversityChengdu 610064

The K-Shell ionization cross sections of silver have been measured by electron *** order to overcome the difficulties in preparing a self-supporting thin target,a thin target with a thick substrate was used in our *** influence of electrons reflected from the substrate was corrected by means of a detailed calculation of electron *** path of the electrons passing through silver target of 31.2μg/cm^(2) was calculated by the EGS4 Monte Carlo *** method of correction for the measurement is reported for the first time.

关键词： silver preparing overcome

L-Shell Ionization Study of Tungsten by Electron Impact

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Chinese Physics Letters 2001年第1期18卷 39-41页

作者： PENG Xiu-Feng HE Fu-Qing LONG Xian-Guan AN Zhu luo zheng-ming Key Laboratory for Radiation Physics and Technology of Education Ministry of China Institute of Nuclear Science and TechnologySichuan UniversityChengdu 610064

L-shell partial production cross sections of L_(α)-,L_(β)-,L_(γ)-rays by electron impact were measured by observing the counts of x-rays from an impacted thin tungsten *** total production cross sections and mean ionization cross sections were deduced from the measured *** electron beam energy range was found to be 11-36 *** influence of electrons reflected by the backing on ionization cross sections has been *** experimental results agree well with the theoretical predictions.

关键词： Impact Electron sections

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非弹性核反应对质子束能量沉积的影响

物理学报 2000年第8期49卷 1639-1643页

作者：王营冠罗正明四川大学原子核科学技术研究所辐射物理中心

提出了一种比较精确且又省时的质子穿透的解析算法 ,并给出了考虑核反应后 5 0— 2 5 0MeV质子在水中的能量沉积 ,与Monte Carlo方法的结果进行了比较 .结果表明 :1)非弹性核反应对质子的能量沉积有明显的影响 ,特别是对较高能量的质子... 详细信息

提出了一种比较精确且又省时的质子穿透的解析算法 ,并给出了考虑核反应后 5 0— 2 5 0MeV质子在水中的能量沉积 ,与Monte Carlo方法的结果进行了比较 .结果表明 :1)非弹性核反应对质子的能量沉积有明显的影响 ,特别是对较高能量的质子束入射情况 ;2 )该方法计算效率比MonteCarlo方法高百倍以上 .因此 ,本文方法解决了质子能量沉积计算中效率和精度之间的矛盾。

关键词：质子能量沉积核反应截面非弹性核反应

肇始与传衍之间：关于《虬髯客传》作者问题的再思考

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东南大学学报（哲学社会科学版） 2011年第3期13卷 88-91页

作者：罗争鸣毕东师范大学古籍研究所上海200241

虬髯客故事当来自李世民图谋天下的谶纬传说,后由某位文人写就,并流播传衍为目前所见的十几种版本的《虬髯客传》(其他版本又称《虬须客》、《虬髯客》等)。目前关于该传作者问题的考证,不出张说、杜光庭、裴铏三说,但这些结论仅是某一... 详细信息

虬髯客故事当来自李世民图谋天下的谶纬传说,后由某位文人写就,并流播传衍为目前所见的十几种版本的《虬髯客传》(其他版本又称《虬须客》、《虬髯客》等)。目前关于该传作者问题的考证,不出张说、杜光庭、裴铏三说,但这些结论仅是某一版本的作者或者改编者,并不是第一位写就并定型了这篇传奇的人,而要考证这个人,难度有加,证据不足,由此不必强立结论,应有所阙疑。从宏观来看,这样一部优秀的唐人传奇,其产生有复杂的社会背景,也当基于彼时传奇创作水平的提高及文学意识的觉醒。

关键词：《虬髯客传》作者考证