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1.
We present an analysis of π-20Ne elastic scattering at intermediate energy basing on the α+16O model of the20Ne nucleus and in the framework of Glauber multiple scattering theory. Satisfactory agreement with the general features of the experimental data of pion elastic scattering on the neighboring 4N-type nuclei is obtained without any free parameters. Compared with the experimental angular distributions of pion elastic scattering on12C,16O,24Mg,and28Si nuclei, the difractive patterns and the positions of the dips and peaks in the angular distributions of π-20Ne elastic scattering are reasonably predicted by the calculations. 相似文献
2.
We initially propose a Reggeon-Pomeron exchange model to describe proton-proton elastic scattering at high energies in this short paper. A calculation for total cross section of
proton-proton elastic scattering at high energies is performed
without any free parameters. Our new finding from this work is
that the Reggeon-Pomeron model gives a perfect fit to experimental data of the total cross section at the whole energy
region where experimental data exist. 相似文献
3.
The α -target semimicroscopic single folding potentials have been derived by folding a composite (repulsive and attractive) effective α-α interaction with the α -cluster distribution density in the target nuclei. The obtained potentials are considered as the real part of the nuclear optical model potentials, while the imaginary parts are phenomenologicaly expressed using the Woods-Saxon form. Nine sets of measured experimental data of the 4He+12C and 4He+16O elastic rainbow scattering over the energy range 80-240 MeV are analyzed using the obtained potentials. The data are successfully reproduced using the extracted potentials. The resulted reaction cross sections are also investigated and compared with the available corresponding data. 相似文献
4.
We study high energy proton-proton elastic scattering in the framework of Pomeron exchange model. The cross section of the process are calculated without any free parameters. Our finding is that Pomeron exchange theory gives perfect fits to total cross section at the energy of√s higher than 10 GeV and to differential cross section at the momentum transfer [t] less than 1.5 GeV2. For total cross section at lower energy √s < 10 GeV and differential cross section at larger momentum transfer region of |t| > 1.5 GeV2, the Pomeron exchange theory needs to be improved. 相似文献
5.
We study high energy proton-proton elastic scattering in the framework of Pomeron exchange model. The cross section of the process are calculated without any free parameters. Our finding is that Pomeron exchange theory gives perfect fits to total cross section at the energy of √(s) higher than 10 GeV and to differential cross
section at the momentum transfer |t| less than 1.5 GeV2. For total
cross section at lower energy
√(s)<10 GeV and differential cross
section at larger momentum transfer region of |t|>1.5 GeV2, the Pomeron exchange theory needs to be improved. 相似文献
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Based on the α-particle model of ^12C nucleus, the differential cross sections for α-^12C elastic scattering at incident energy of 4.2 GeV have been calculated within the framework of Glauber multiple scattering theory. The results show that the main features of the measured angular distribution of the cross sections can be reasonably described. The parameterized α-α scattering amplitude, which is the basic input to construct the α-^12 C scattering Glauber amplitude in the a-particle model, is obtained by fitting the α-α scattering data. 相似文献
8.
The α-target semimicroscopic single folding potentials have been derived by folding a composite (repul-sive and attractive) effective α-α interaction with the α-cluster distribution density in the target nuclei. The obtained potentials are considered as the real part of the nuclear optical model potentials, while the imaginary parts are phe-nomenologicaly expressed using the Woods-Saxon form. Nine sets of measured experimental data of the 4He+12C and 4 He+16O elastic rainbow scattering over the energy range 80-240 MeV are analyzed using the obtained potentials. The data are successfully reproduced using the extracted potentials. The resulted reaction cross sections are also investigated and compared with the available corresponding data. 相似文献
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卢朝晖 吴和宇 胡荣江 诸永泰 张保国 李祖玉 魏志勇 段利敏 王宏伟 肖志刚 王素芳 靳根明 郭忠言 肖国青 朱海东 柳永英 陈克良 陈陶 李湘庆 李智焕 《中国物理 C》2002,26(6):594-599
采用逆运动学方法对放射性核束17F和18Ne与质子进行弹性散射实验,得到了实验测量微分截面.用较准确描述放射性核素性质的CH89参数化的光学势为初始光学势,用扭曲波玻恩近似的理论计算程序DWUCK4和自动参数搜索程序ABOD对实验数据进行光学势参数理论拟合,得到了与实验数据相符合的光学势参数.将得到的光学势参数进行分析,得到了17F和18Ne实势相互作用均方根半径分别为3.239fm和3.317fm. 相似文献
12.
P. -T. Ong Y. -X. Yang Q. -R. Li 《The European Physical Journal A - Hadrons and Nuclei》2009,41(2):229-234
The ground state of 20Ne is described as the clustering structure of + 16
O . The cluster wave function with an analytical and simple form is presented. Based on this model, the intermediate-energy
proton- 20Ne elastic scattering is calculated and compared with the experimental data. 相似文献
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14.
The elastic scattering angular distributions of 11B projectile on light, medium, and heavy target nuclei including 7Li, 9Be, 12C, 16O, 24,25,26Mg, 27Al, 28Si, 40Ca, 58Ni, 59Co, 60Ni, 197Au, 208Pb, and 209Bi have been analyzed at various incident energies. The theoretical results have been obtained by using two different nuclear potentials within the framework of the optical model (OM). Firstly, the double folding potential for real part and the Wood-Saxon (WS) potential for imaginary part have been applied. Secondly, the calculations with double folding potential for both real and imaginary part have been performed and compared with the experimental data. It has been seen that the results are in very good agreement with the experimental data. Also, the volume integrals and cross-sections for each reaction have been obtained. Finally, a new and simple formula for the imaginary potential depth has been derived to clarify the nuclear interactions of 11B nucleus at low energy reactions. 相似文献
15.
Ashok Kumar 《Pramana》1990,35(5):449-459
A relatively simple procedure using nuclear interaction calculated microscopically from two-nucleon potential employing equivalence
of resonating group method and generator coordinate method has been used to calculate the differential cross-sections (DCS)
forα +20Ne elastic scattering atE
lab=18.0, 20.2, 21.9, 23.0 and 27.2 MeV. The absorption effects due to the opening of the non-elastic channels are taken into
account approximately by the sharp cut-off of lower partial waves. The anomalous large oscillations of the DCS at backward
angles atE
lab=18.0 and 27.2 MeV are reproduced. The calculated results are in fair agreement with the experimental data. 相似文献
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A. A. Farra 《理论物理通讯》2000,33(3):499-502
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