Charge-changing cross-section measurement of 12-16C at around 45A MeV and develop- ment of a Glauber model for incident energies 10A-2100A MeV
Charge-changing cross-section measurement of 12-16C at around 45A MeV and develop- ment of a Glauber model for incident energies 10A-2100A MeV
复制标题
在 45A MeV 左右进行 12-16C 电荷变化截面测量，并开发入射能量 10A-2100A MeV 的 Glauber 模型
DOI：
10.1103/physrevc.94.064604
复制
发表时间：
2016
影响因子：
3.1
通讯作者：
et al.
中科院分区：
文献类型：
--
作者：
D. T. Tran;T. Kawabata;et al.
我们首次测量了能量低于MeV的靶上的电荷变化截面。为了分析这些低能数据，我们建立了一个有限范围的Glauber模型，其全局参数集在光学极限近似范围内，适用于入射能量从到MeV的反应截面和测量。采用由电子散射数据得到的质子密度分布，以及文献中得到的裸核子-核子总截面和质子-质子前向弹性散射振幅实部与虚部比值，我们确定了质子-中子弹性微分截面的能量相关斜率参数，以便再现现有的和相互作用的截面。截面数据在很宽的入射能量范围内。应用所建立的Glauber模型计算了不同入射能量下的光子和靶的散射。我们的计算结果与实验数据吻合得很好。将我们的模型应用于所谓的中子皮核，我们再次确认了在入射能量低于MeV时测量的重要性。利用实测数据和已有数据提取了质子均方根半径。计算结果与电子散射的结果一致，证明了测量的可行性和有效性，以及本文提出的Glauber模型。
We have measured for the first time the charge-changing cross sectionsofon atarget at energies belowMeV. To analyze these low-energy data, we have developed a finite-range Glauber model with a global parameter set within the optical-limit approximation which is applicable to reaction cross sectionandmeasurements at incident energies fromtoMeV. Adopting the proton-density distribution ofknown from the electron-scattering data, as well as the bare total nucleon-nucleon cross sections and the real-to-imaginary-part ratios of the forward proton-proton elastic scattering amplitude available in the literatures, we determine the energy-dependent slope parameterof the proton-neutron elastic differential cross section so as to reproduce the existingand interaction cross-section data forover a wide range of incident energies. The Glauber model thus formulated is applied to calculate the's ofon aandtargets at various incident energies. Our calculations show excellent agreement with the experimental data. Applying our model to theandfor the so-called neutron-skinnucleus, we reconfirm the importance of measurements at incident energies belowMeV. The proton root-mean-square radii ofare extracted using the measured's and the existingdata. The results forare consistent with the values from the electron scatterings, demonstrating the feasibility, usefulness of themeasurement, and the present Glauber model.