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The fragmentation of ^(20)ne at 400 A MeV

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Chinese Physics C 2012年第1期36卷 37-42页

作者： CHEnG Jin-Xia ZHAnG Dong-Hai YAn Shi-Wei LI Jun-Sheng WAnG Li-Chun LI Yan-Jing n.yasuda College of nuclear Science and Technology Beijing Normal UniversityBeijing 100875China Institute of Modern Physics Shanxi Normal UniversityLinfen 041004China Beijing Radiation Center Beijing 100875China Fundamental Technology Center National Institute of Radiological

The total charge-changing cross sections and partial cross sections for the production of projectile fragments are measured in the interactions of 400 A MeV 20 ne with aluminum,carbon and polyethylene targets sandwiched with CR-39 plastic nuclear track *** measured total charge-changing cross sections are compared with the predictions using the Bradt-Peters semi-empirical formula,and the nUCFRAG2 and PHITS *** is shown that the measured experimental results are in good agreement with the theoretical model prediction and other experimental results,and it can be clearly seen that the partial cross sections for fragment production show obvious odd-even effects.

关键词： heavy ion fragmentation charge-changing cross sections CR-39

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固体气泡损伤探测器阈起源的实验判别

核技术 2002年第7期25卷 506-510页

作者：郭士伦李丽 Doke T Kikuchi J Terasawa K Hara K Sakuma n yasuda n Murakami T 中国原子能科学研究院核物理研究所北京102413 Advanced Research Institute for Science and Engineering Waseda University national Institute of Radiological Science

用 5 0 0MeV/u56Fe,6 5 0MeV/u40Ar ,6 0 0MeV/u2 8Si和 180MeV/u4He对固体气泡损伤探测器 (T- 12型 )进行了实验研究 ,实验结果表明 ,固体气泡损伤探测器的阈特性可用临界能量损失率表征。在一般条件下 ,限定能量损失率在不同重离子产... 详细信息

用 5 0 0MeV/u56Fe,6 5 0MeV/u40Ar ,6 0 0MeV/u2 8Si和 180MeV/u4He对固体气泡损伤探测器 (T- 12型 )进行了实验研究 ,实验结果表明 ,固体气泡损伤探测器的阈特性可用临界能量损失率表征。在一般条件下 ,限定能量损失率在不同重离子产生径迹时不具有相同临界值 ,因此。

关键词：固体气泡损伤探测器阈起源临界能量损失率限定能量损失率

Projectile fragment emission in the fragmentation of ^(56)Fe on C,Al and CH_2 targets at 471 A MeV

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Chinese Physics C 2014年第1期38卷 19-27页

作者：李彦晶张东海晏世伟王立春程锦霞李俊生 S.Kodaira n.yasuda College of nuclear Science and Technology Beijing Normal University Institute of Modern Physics Shanxi Normal University Beijing Radiation Center Fundamental Technology Center National Institute of Radiological Sciences 4-9-1 AnagawaInage-kuChiba 263-8555Japan

The emission angle and the transverse momentum distributions of projectile fragments produced in the fragmentation of 56Fe on CHs, C and A1 targets at 471 A MeV are measured. It is found that for the same target, the average value and width of the angular distribution decrease with an increase of the projectile fragment charge; for the same projectile fragment, the average value of the distribution increases and the width of the distribution decreases with increasing the target charge number. The transverse momentum distribution of a projectile fragment can be explained by a single Gaussian distribution and the averaged transverse momentum per nucleon decreases with the increase of the charge of projectile fragment. The cumulated squared transverse momentum distribution of a projectile fragment can be explained well by a single Rayleigh distribution. The temperature parameter of the emission source of the projectile fragment, calculated from the cumulated squared transverse momentum distribution, decreases with the increase of the size of the projectile fragment.

关键词： heavy ion projectile fragmentation transverse momentum distribution CR-39

Projectile fragment emission in the fragmentation of 56Fe on Al,C,and CH2 targets

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nuclear Science and Techniques 2019年第12期30卷 119-129页

作者： Luo-Huan Wang Liang-Di Huo Jia-Huan Zhu Hai-Rui Duan Jing-Ya Wu Hui-Ling Li Jun-Sheng Li S.Kodaira n.yasuda Dong-Hai Zhang Institute of Modern Physics Shanxi Normal UniversityLinfen 041004China Radiation Measurement Research Section National Institute of Radiological ScienceChiba 263-8555Japan Research Institute of nuclear Engineering University of FukuiFukui 914-0055Japan

The emission angle distribution of projectile fragments(PFs)and the temperature of PF emission sources for fragmentation of 56Fe on polyethylene,carbon,and aluminum targets at the highest energy of 497 A MeV are investigated on the basis of corrected data,using a CR-39 plastic nuclear track *** is found that the average emission angle of PFs increases with the decrease in PF charge for the same target,and no obvious dependence of angular distribution on the mass of the target nucleus is found for the same *** cumulative squared transverse momentum distribution of PFs can be well represented by a single Rayleigh *** temperature of PF emission sources is extracted from the distribution,and it is about 1.0-8.0 MeV and does not depend on the mass of the target for PFs with charges of 9≤Z≤25.

关键词： Heavy-ion collision Projectile fragmentation nuclear temperature CR-39 plastic nuclear track detector

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固体气泡探测器-固体核径迹探测器的新类别

核技术 2005年第9期28卷 659-662页

作者：郭士伦 Doke T 李丽陈宝流张东海 Kikuchi J Terasawa K Komiyama M Hara K Fuse T yasuda n Murakami T 中国原子能科学研究院北京102413 Advanced Research Institute for Science and Engineering Waseda University 山西师范大学现代物理研究所临汾041004 The Institute of Physical and Chemical Research national Institute of Radiological Sciences

利用高能重离子p、He、C、Si、Ar、Fe、Kr和Xe对固体气泡探测器的性质进行了研究。结果表明,固体气泡探测器具有许多与固体核径迹探测器相似的性质,且具有显影主动性、实时记录性、体径迹显示能力等多方面普通固体核径迹探测器所不具有... 详细信息

利用高能重离子p、He、C、Si、Ar、Fe、Kr和Xe对固体气泡探测器的性质进行了研究。结果表明,固体气泡探测器具有许多与固体核径迹探测器相似的性质,且具有显影主动性、实时记录性、体径迹显示能力等多方面普通固体核径迹探测器所不具有的性能。可以得出结论:固体气泡探测器是固体核径迹探测器的一种新类别。

关键词：固体气泡探测器固体核径迹探测器高能重离子探测

Langmuir-Schaefer Film Investigation and Density Functional Theory Band Gap Calculations of Calix[n]arene-Para-Aminobenzoic Acid for Drug nanosensor Application

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Journal of Wuhan University of Technology(Materials Science) 2024年第5期39卷 1311-1318页

作者： WOnG Yeong Yi F L Supian A Radzwan M Musa n F n Abd Karim Department of Physics Sultan Idris Education UniversityTanjong Malim 35900Malaysia Department of Chemistry Sultan Idris Education UniversityTanjong Malim 35900Malaysia

Calix[n]arenes was utilized to detect PABA,the primary sunscreen *** study investigates the interaction of calix[4]arene(C4),calix[6]arene(C6),and PABA using the Langmuir method and first-principle density functional theory(DFT).Using the Langmuir-Schaefer(LS)technique,an ultrathin film composed of calix[n]arenes and their complexes with PABA was deposited on various *** on the Langmuir study,the PABA molecule was bonded to the lower rims of both C4 and C6 with the host-guest ratio of 1:*** of the LS films formed were then characterized by ultravioletvisible spectroscopy(UV-Vis),Fourier-transform infrared spectroscopy(FTIR)and carbon,hydrogen,nitrogen,sulfur elemental analyzer(CHnS).The band gap reduction obtained in the DFT study denotes the charge transfer interaction with promising reactivity between the calix[n]arenes and *** sensing of PABA by C4 and C6 is successful based on the formation of bonding between them due to the hosts’effective trapping *** outcomes of this study could be applied to drug delivery systems for future pharmaceutical and medical applications.

关键词： calix[n]arenes band gap density functional theory Langmuir-Schaefer PABA sensor

Chebyshev polynomial-based Ritz method for thermal buckling and free vibration behaviors of metal foam beams

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Applied Mathematics and Mechanics(English Edition) 2024年第5期45卷 891-910页

作者： n.D.nGUYEn T.n.nGUYEn Faculty of Civil Engineering Ho Chi Minh City University of Technology and EducationHo Chi Minh City 71309Viet Nam Faculty of Engineering and Technology Kien Giang UniversityChau Thanh 92000Viet Nam

This study presents the Chebyshev polynomials-based Ritz method to examine the thermal buckling and free vibration characteristics of metal foam *** analyses include three models for porosity distribution and two scenarios for thermal *** material properties are assessed under two conditions,i.e.,temperature dependence and temperature *** theoretical framework for the beams is based on the higher-order shear deformation theory,which incorporates shear deformations with higher-order *** governing equations are established from the Lagrange equations,and the beam displacement fields are approximated by the Chebyshev *** simulations are performed to evaluate the effects of thermal load,slenderness,boundary condition(BC),and porosity distribution on the buckling and vibration behaviors of metal foam *** findings highlight the significant influence of temperature-dependent(TD)material properties on metal foam beams'buckling and vibration responses.

关键词： Ritz method Chebyshev function buckling vibration metal foam beam higher-order beam theory(HOBT)

Compression properties of cost-efficient porous expanded clay reinforced AA7075 syntactic foams fabricated by industrial-oriented die casting technology

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China Foundry 2024年第1期21卷 60-70页

作者： İsmail Cem Akgün Çağın Bolat Ali Gökşenli Faculty of Mechanical Engineering Istanbul Technical University34437İstanbulTurkey Faculty of Engineering Samsun University55420SamsunTurkey

In today’s manufacturing industries,hard competition between rival firms makes it compulsory for researchers to design lighter and cheaper machine components due to the megatrends of cost-effectiveness and *** this point,aluminum syntactic foams(ASFs)are new-generation engineering composites and come into the upfront as a *** to their features like low density,sufficient elongation,and perfect energy absorption ability,these advanced foams have been considerably seductive for many industrial sectors *** this study,an industrial-oriented automatic die casting technology was used for the first time to manufacture the combination of AA7075/porous expanded clay(PEC).Micro evaluations(optical and FESEM)reveal that there is a homogenous particle distribution in the foam samples,and inspections are compatible with the other ASF ***,T6 aging heat treatment was operated on one half of the produced foams to explore the probable impact of aging on the compressive *** results show that PEC particles can be an alternative to expensive hollow spheres used in the previous ***,a favorable relationship is ascertained between the aging treatment and mechanical properties such as compression strength and plateau strength.

关键词： die casting porous materials metal matrix sytanctic foams expanded clay compressive deformation

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用于空间诱变育种机理研究的标定实验

核技术 2006年第9期29卷 670-673页

作者：卫增泉颉红梅安田仲宏藤高和信梅曼彤庄楚雄中国科学院近代物理研究所兰州730000 国立放射医学综合研究所华南农业大学广州510642

为鉴别击中搭载水稻种子的空间重离子,一种固体核径迹探测器(SSnTD)CR-39被用作“三明治”式探测系统的一部分,通过测量离子在CR-39中的射程R和蚀刻率V,就可得到斜率(dR/dV-1)。根据自建的一个数学模型R*=0.015AZ3.13V-1,可利用已知离... 详细信息

为鉴别击中搭载水稻种子的空间重离子,一种固体核径迹探测器(SSnTD)CR-39被用作“三明治”式探测系统的一部分,通过测量离子在CR-39中的射程R和蚀刻率V,就可得到斜率(dR/dV-1)。根据自建的一个数学模型R*=0.015AZ3.13V-1,可利用已知离子标定实验数据来拟合得到该模型的系数。为此,CR-39对C、ne、Si、Ar和Fe离子的标定实验分别在中国科学院近代物理研究所的重离子研究装置(HIRFL-IMP)上和日本国立放射医学综合研究所的重离子医用加速器(HIMAC-nIRS)上进行。拟合得到了一个离子鉴别公式Z3.13=3.75×104+1.50(dR/dV-1)和一条标定直线。

关键词：空间诱变育种固体核径迹探测器CR-39 鉴别标定实验