Measurement of <sup>12</sup>C+<sup>13</sup>C Fusion Cross Sections Below Coulomb Barrier Energies

CHEN Zhijun; ZHANG Ningtao; LI Qite; REN Xiaotang; TANG Xiaodong; WANG Xinyu; XU Jinyan; XU Shiwei

doi:10.11804/NuclPhysRev.34.04.705

The study of fusion reactions of ¹²C+¹³C at the deep sub-barrier energies is very important for the test of predictive power of the extrapolation models for nuclear reactions for astrophysics. Until now, all the measurements below Coulomb barrier energies have to use the statistical model calculations to estimate the branching ratios to deduce the total fusion cross sections. However, the systematic uncertainty induced by the calculated corrections has not been studied well. In this experiment, the fusion cross sections of ¹²C+¹³C have been measured using an offline activity measurement in the range of E_c.m.=4.4 to 5.8 MeV. The total fusion cross sections have been deduced from the ²⁴Na activities after correcting the branching ratios estimated with the Hauser-Feshbach statistical model. Through the comparison between our result and other data obtained with other methods, the systematic uncertainty of statistical model has been determined to be 14%.

Measurement of ¹²C+¹³C Fusion Cross Sections Below Coulomb Barrier Energies

1. Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China;

2. Institute of Heavy Ion Physics, Peking University, Beijing 100871, China;

3. School of Physics and State Key Laboratory of Nuclear Physics and Technology, Peking University, Beijing 100871, China

Funds: National Natural Science Foundation of China(11475228,11405226);Hundred Talents Program of Chinese Academy of Science(Y411010BR0)

Received Date: 2017-05-04

Rev Recd Date: 2017-05-19

Publish Date: 2017-12-20

Key words:

¹²C+¹³C fusion at sub-barrier energies /
statistical model /
systematic error

Abstract: The study of fusion reactions of ¹²C+¹³C at the deep sub-barrier energies is very important for the test of predictive power of the extrapolation models for nuclear reactions for astrophysics. Until now, all the measurements below Coulomb barrier energies have to use the statistical model calculations to estimate the branching ratios to deduce the total fusion cross sections. However, the systematic uncertainty induced by the calculated corrections has not been studied well. In this experiment, the fusion cross sections of ¹²C+¹³C have been measured using an offline activity measurement in the range of E_c.m.=4.4 to 5.8 MeV. The total fusion cross sections have been deduced from the ²⁴Na activities after correcting the branching ratios estimated with the Hauser-Feshbach statistical model. Through the comparison between our result and other data obtained with other methods, the systematic uncertainty of statistical model has been determined to be 14%.

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Measurement of ¹²C+¹³C Fusion Cross Sections Below Coulomb Barrier Energies

doi: 10.11804/NuclPhysRev.34.04.705

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通讯作者: 陈斌, bchen63@163.com

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Measurement of ¹²C+¹³C Fusion Cross Sections Below Coulomb Barrier Energies

doi: 10.11804/NuclPhysRev.34.04.705

1. Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China;

2. Institute of Heavy Ion Physics, Peking University, Beijing 100871, China;

3. School of Physics and State Key Laboratory of Nuclear Physics and Technology, Peking University, Beijing 100871, China

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Measurement of 12C+13C Fusion Cross Sections Below Coulomb Barrier Energies

doi: 10.11804/NuclPhysRev.34.04.705

Abstract

References

Proportional views

通讯作者: 陈斌, bchen63@163.com

Article Metrics

Proportional views

Measurement of 12C+13C Fusion Cross Sections Below Coulomb Barrier Energies

doi: 10.11804/NuclPhysRev.34.04.705

1. Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China; 2. Institute of Heavy Ion Physics, Peking University, Beijing 100871, China; 3. School of Physics and State Key Laboratory of Nuclear Physics and Technology, Peking University, Beijing 100871, China

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Measurement of ¹²C+¹³C Fusion Cross Sections Below Coulomb Barrier Energies

Measurement of ¹²C+¹³C Fusion Cross Sections Below Coulomb Barrier Energies

1. Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China;

2. Institute of Heavy Ion Physics, Peking University, Beijing 100871, China;

3. School of Physics and State Key Laboratory of Nuclear Physics and Technology, Peking University, Beijing 100871, China