A method of estimating and subtracting the hydrogen background in the natural carbon target used in the C-12+C-12 experiment

作者：Qu Wei Wei; Zhang Gao Long^*; Terashima Satoru; Tanihata Isao; Guo Chen Lei; Le Xiao Yun

来源：Nuclear Science and Techniques, 2014, 25(5): 050501.

• Elastic scattering
• Subtraction background
• Hydrogen content

The experimental data of 100A MeV C-12 + C-12 elastic scattering are checked by using two-body kinematic calculation and C-12 + 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 the C-12 + C-12 system and the ground state energy spectra of the C-12 + 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 of C-12 + 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)%.

• 出版日期2014-10
• 单位北京航空航天大学