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The experimental data of 100 A MeV12C +12C elastic scattering are checked by using two-body kinematic calculation and12 C + p elastic scattering. It is shown that the measured data are true and reliable. In the paper,the transformation between the excited energy spectra of the12 C +12C system and the ground state energy spectra of the12 C + p system is introduced. The method of subtraction of the hydrogen background in the natural carbon target used in the experiment is elaborately described and the results are discussed. It is indicated that this method of subtraction of hydrogen background is reasonable and can be used in the data analysis. Based on the elastic scattering cross section of the previous experiment of12C+p at 95.3A MeV, the hydrogen content entered into the reaction is analyzed. The final hydrogen content in the natural carbon target is(2.73 ± 0.12)%. 相似文献
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在施工阶段对一楼板进行了为期23d的挠度监测.从所监测的楼板支好模板、绑好钢筋、下好管线时开始读取初始数据,结束监测的时间为所监测的楼板拆模为止.监测表明,正常情况下施工阶段现浇楼板出现的裂缝很细微,施工阶段并不是建筑物开裂的主要阶段. 相似文献
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