8 results on '"C S, Shang"'
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2. Progress of Underground Nuclear Astrophysics Experiment JUNA in China
- Author
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W. P. Liu, Z. H. Li, J. J. He, X. D. Tang, G. Lian, J. Su, Y. P. Shen, Z. An, F. Q. Chao, J. J. Chang, L. H. Chen, H. Chen, X. J. Chen, Y. H. Chen, Z. J. Chen, B. Q. Cui, X. C. Du, X. Fang, C. B. Fu, L. Gan, B. Guo, Z. Y. Han, X. Y. Guo, G. Z. He, J. R. He, A. Heger, S. Q. Hou, H. X. Huang, N. Huang, B. L. Jia, L. Y. Jiang, S. Kubono, J. M. Li, M. C. Li, K. A. Li, E. T. Li, T. Li, Y. J. Li, M. Lugaro, X. B. Luo, H. Y. Ma, S. B. Ma, D. M. Mei, W. Nan, W. K. Nan, N. C. Qi, Y. Z. Qian, J. C. Qin, J. Ren, C. S. Shang, L. T. Sun, W. L. Sun, W. P. Tan, I. Tanihata, S. Wang, P. Wang, Y. B. Wang, Q. Wu, S. W. Xu, S. Q. Yan, L. T. Yang, Y. Yang, X. Q. Yu, Q. Yue, S. Zeng, L. Zhang, H. Zhang, H. Y. Zhang, L. Y. Zhang, N. T. Zhang, P. Zhang, Q. W. Zhang, T. Zhang, X. P. Zhang, X. Z. Zhang, W. Zhao, J. F. Zhou, and Y. Zhou
- Subjects
Atomic and Molecular Physics, and Optics - Published
- 2022
- Full Text
- View/download PDF
3. Deep underground laboratory measurement of $^{13}$C($α$,$n$)$^{16}$O in the Gamow windows of the $s$- and $i$-processes
- Author
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B, Gao, T Y, Jiao, Y T, Li, H, Chen, W P, Lin, Z, An, L H, Ru, Z C, Zhang, X D, Tang, X Y, Wang, N T, Zhang, X, Fang, D H, Xie, Y H, Fan, L, Ma, X, Zhang, F, Bai, P, Wang, Y X, Fan, G, Liu, H X, Huang, Q, Wu, Y B, Zhu, J L, Chai, J Q, Li, L T, Sun, S, Wang, J W, Cai, Y Z, Li, J, Su, H, Zhang, Z H, Li, Y J, Li, E T, Li, C, Chen, Y P, Shen, G, Lian, B, Guo, X Y, Li, L Y, Zhang, J J, He, Y D, Sheng, Y J, Chen, L H, Wang, L, Zhang, F Q, Cao, W, Nan, W K, Nan, G X, Li, N, Song, B Q, Cui, L H, Chen, R G, Ma, S Q, Yan, J H, Liao, Y B, Wang, S, Zeng, D, Nan, Q W, Fan, N C, Qi, W L, Sun, X Y, Guo, P, Zhang, Y H, Chen, Y, Zhou, J F, Zhou, J R, He, C S, Shang, M C, Li, S, Kubono, W P, Liu, R J, deBoer, M, Wiescher, and M, Pignatari
- Subjects
FOS: Physical sciences ,Nuclear Experiment (nucl-ex) - Abstract
The ^{13}C(α,n)^{16}O reaction is the main neutron source for the slow-neutron-capture process in asymptotic giant branch stars and for the intermediate process. Direct measurements at astrophysical energies in above-ground laboratories are hindered by the extremely small cross sections and vast cosmic-ray-induced background. We performed the first consistent direct measurement in the range of E_{c.m.}=0.24 to 1.9 MeV using the accelerators at the China Jinping Underground Laboratory and Sichuan University. Our measurement covers almost the entire intermediate process Gamow window in which the large uncertainty of the previous experiments has been reduced from 60% down to 15%, eliminates the large systematic uncertainty in the extrapolation arising from the inconsistency of existing datasets, and provides a more reliable reaction rate for the studies of the slow-neutron-capture and intermediate processes along with the first direct determination of the alpha strength for the near-threshold state.
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- 2022
- Full Text
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4. Direct Measurement of the Astrophysical F19(p,αγ)O16 Reaction in the Deepest Operational Underground Laboratory
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J. Su, SongPo Xu, You Zhou, Z. C. Zhang, E. T. Li, Feng-Shou Zhang, Z. M. Li, X. Tang, Qi Wu, X. Y. Li, J. Li, Yue Chen, J. J. He, X. Y. Guo, Y. H. Zhang, Michael Wiescher, Richard deBoer, H. Y. Zhang, Litao Sun, Jing Zhou, N. C. Qi, G. Lian, X. Z. Jiang, T. Y. Jiao, J. R. He, H. S. Xu, Z. G. Hu, B. Guo, Mengran Li, Peng Zhang, L. Zhang, Y. D. Sheng, D. Kahl, Jie Wang, Shuangxi Wang, Lei Wang, Ye Chen, Lufeng Zhang, B. Q. Cui, C. S. Shang, L. H. Chen, J. P. Chen, J. Q. Li, Hai-Hui Zhao, X. H. Zhou, W. L. Sun, Z. H. Li, F. Q. Cao, R. G. Ma, L. Y. Song, and W. P. Liu
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Reaction rate ,Nuclear physics ,Physics ,CNO cycle ,Thermonuclear fusion ,chemistry ,Metallicity ,China Jinping Underground Laboratory ,Nuclear astrophysics ,Fluorine ,General Physics and Astronomy ,chemistry.chemical_element ,Energy (signal processing) - Abstract
Fluorine is one of the most interesting elements in nuclear astrophysics, where the ^{19}F(p,α)^{16}O reaction is of crucial importance for Galactic ^{19}F abundances and CNO cycle loss in first generation Population III stars. As a day-one campaign at the Jinping Underground Nuclear Astrophysics experimental facility, we report direct measurements of the essential ^{19}F(p,αγ)^{16}O reaction channel. The γ-ray yields were measured over E_{c.m.}=72.4-344 keV, covering the Gamow window; our energy of 72.4 keV is unprecedentedly low, reported here for the first time. The experiment was performed under the extremely low cosmic-ray-induced background environment of the China JinPing Underground Laboratory, one of the deepest underground laboratories in the world. The present low-energy S factors deviate significantly from previous theoretical predictions, and the uncertainties are significantly reduced. The thermonuclear ^{19}F(p,αγ)^{16}O reaction rate has been determined directly at the relevant astrophysical energies.
- Published
- 2021
- Full Text
- View/download PDF
5. Direct Measurement of the Astrophysical ^{19}F(p,αγ)^{16}O Reaction in the Deepest Operational Underground Laboratory
- Author
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L Y, Zhang, J, Su, J J, He, M, Wiescher, R J, deBoer, D, Kahl, Y J, Chen, X Y, Li, J G, Wang, L, Zhang, F Q, Cao, H, Zhang, Z C, Zhang, T Y, Jiao, Y D, Sheng, L H, Wang, L Y, Song, X Z, Jiang, Z M, Li, E T, Li, S, Wang, G, Lian, Z H, Li, X D, Tang, H W, Zhao, L T, Sun, Q, Wu, J Q, Li, B Q, Cui, L H, Chen, R G, Ma, B, Guo, S W, Xu, J Y, Li, N C, Qi, W L, Sun, X Y, Guo, P, Zhang, Y H, Chen, Y, Zhou, J F, Zhou, J R, He, C S, Shang, M C, Li, X H, Zhou, Y H, Zhang, F S, Zhang, Z G, Hu, H S, Xu, J P, Chen, and W P, Liu
- Abstract
Fluorine is one of the most interesting elements in nuclear astrophysics, where the ^{19}F(p,α)^{16}O reaction is of crucial importance for Galactic ^{19}F abundances and CNO cycle loss in first generation Population III stars. As a day-one campaign at the Jinping Underground Nuclear Astrophysics experimental facility, we report direct measurements of the essential ^{19}F(p,αγ)^{16}O reaction channel. The γ-ray yields were measured over E_{c.m.}=72.4-344 keV, covering the Gamow window; our energy of 72.4 keV is unprecedentedly low, reported here for the first time. The experiment was performed under the extremely low cosmic-ray-induced background environment of the China JinPing Underground Laboratory, one of the deepest underground laboratories in the world. The present low-energy S factors deviate significantly from previous theoretical predictions, and the uncertainties are significantly reduced. The thermonuclear ^{19}F(p,αγ)^{16}O reaction rate has been determined directly at the relevant astrophysical energies.
- Published
- 2021
6. Direct Detection Constraints on Dark Photons with the CDEX-10 Experiment at the China Jinping Underground Laboratory
- Author
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C. X. Yu, B. T. Zhang, X. P. Geng, Hao-Yang Xing, Hanxiong Huang, Honghan Gong, J. Li, Qian Yue, Y. D. Liu, Y. Li, Tian Xue, W. Y. Tang, Yang Tian, M. X. Li, K. Kang, B. Sevda, Y. Y. Liu, Cong-Feng Qiao, X. C. Ruan, L. T. Yang, F. K. Lin, L. P. Jia, Zhenyu Zhang, Lei Wang, J. F. Zhou, T. C. Huang, Yan Wang, J. P. Chang, Lakhwinder Singh, Y. C. Mao, H. T. He, Q. Y. Nie, X. Q. Li, M. Agartioglu, Shin-Ted Lin, Z. She, N. C. Qi, M. G. Zhao, G. F. Wang, Q. J. Guo, Y. L. Yan, X. Y. Guo, X. N. Li, Ming Zeng, Feng-Shou Zhang, H. B. Li, Qian Wang, Shengzhou Wu, J. Cheng, Yuanjing Li, Ye Chen, Tianxi Sun, J. W. Hu, N. Yi, Z. Y. Zhou, S. M. He, L. He, Zhi Zeng, H. J. Yu, J.J. Zhu, Y. Wang, C. S. Shang, B. Liao, P. Gu, V. Sharma, Zuowei Liu, Jia-Ming Li, Lei Zhang, Wei Dai, H. P. An, H. Pan, Zhao-Qi Wang, Yin Xu, Zhi Deng, Manoj Kumar Singh, J. H. Ning, Hau-Bin Li, Hao Ma, Jun Ren, Henry T. Wong, S. K. Liu, C. J. Tang, Jing-Han Chen, and J. F. Yue
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Physics ,Physics - Instrumentation and Detectors ,Photon ,Dark matter ,China Jinping Underground Laboratory ,FOS: Physical sciences ,General Physics and Astronomy ,chemistry.chemical_element ,Germanium ,Instrumentation and Detectors (physics.ins-det) ,Parameter space ,Kinetic energy ,01 natural sciences ,Dark photon ,High Energy Physics - Experiment ,Nuclear physics ,High Energy Physics - Phenomenology ,High Energy Physics - Experiment (hep-ex) ,High Energy Physics - Phenomenology (hep-ph) ,chemistry ,0103 physical sciences ,010306 general physics ,Mixing (physics) - Abstract
We report constraints on the dark photon effective kinetic mixing parameter (${\kappa}$) with data taken from two ${p}$-type point-contact germanium detectors of the CDEX-10 experiment at the China Jinping Underground Laboratory. The 90\% confidence level upper limits on ${\kappa}$ of solar dark photon from 205.4 kg-day exposure are derived, probing new parameter space with masses (${m_V}$) from 10 to 300 eV/${c^2}$ in direct detection experiments. Considering dark photon as the cosmological dark matter, limits at 90\% confidence level with ${m_V}$ from 0.1 to 4.0 keV/${c^2}$ are set from 449.6 kg-day data, with a minimum of ${\rm{\kappa=1.3 \times 10^{-15}}}$ at ${\rm{m_V=200\ eV/c^2}}$., Comment: 5 pages, 6 figures
- Published
- 2020
7. First experimental constraints on WIMP couplings in the effective field theory framework from CDEX
- Author
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X. C. Ruan, Y. C. Mao, Z. She, Ming-Gang Zhao, S. M. He, Qian Yue, Qing Wang, Shiyong Wu, Tao Xue, Hong-Jian He, QiuJu Guo, J. W. Hu, Yin Xu, H. Pan, Tianxi Sun, Z. Y. Zhou, Manoj Kumar Singh, Chang-Jian Tang, Li Wang, B. Liao, ZhongZhi Liu, Q. Y. Nie, Yulan Li, Hanxiong Huang, W. Y. Tang, Zhi Deng, Lei Zhang, Lakhwinder Singh, Hao Yu, Hao Ma, Xia Li, Wei Dai, Hao-Yang Xing, Yucheng Wu, C. S. Shang, Jin Li, Liu Yuanyuan, Jingjun Zhu, Hai-Peng An, Hau-Bin Li, M. Agartioglu, B. T. Zhang, L. He, YuChen Wang, J. H. Ning, Feng-Shou Zhang, T. C. Huang, Yuanjing Li, Xi Jiang, Jing Zhou, R. M. J. Li, X. Y. Guo, Jianmin Li, Ming Zeng, S. K. Liu, Yipeng Wang, Yi Wang, Henry T. Wong, Zhen Wang, Y. L. Yan, H. T. Jia, Zhi Zeng, Yu Liu, C. H. Fang, KangKang Zhao, N. Yi, Vivek Sharma, Yunhua Chen, Y. Y. Liu, Kejun Kang, L. T. Yang, Chunxu Yu, J. P. Chang, Jie Ren, Hui Gong, Jianping Cheng, X. P. Geng, Yang Tian, L. P. Jia, C. Y. Chiang, Jianbo Yue, F. K. Lin, MingXuan Li, Shin-Ted Lin, ZhenYu Zhang, Jing-Han Chen, N. C. Qi, and G. F. Wang
- Subjects
Coupling ,Physics ,Particle physics ,Physics - Instrumentation and Detectors ,General Physics and Astronomy ,FOS: Physical sciences ,Instrumentation and Detectors (physics.ins-det) ,01 natural sciences ,High Energy Physics - Experiment ,Set (abstract data type) ,High Energy Physics - Phenomenology ,High Energy Physics - Experiment (hep-ex) ,High Energy Physics - Phenomenology (hep-ph) ,WIMP ,China Dark Matter Experiment ,Weakly interacting massive particles ,0103 physical sciences ,Modulation (music) ,Effective field theory ,Limit (mathematics) ,010306 general physics ,010303 astronomy & astrophysics - Abstract
We present weakly interacting massive particles (WIMPs) search results performed using two approaches of effective field theory from the China Dark Matter Experiment (CDEX), based on the data from both CDEX-1B and CDEX-10 stages. In the nonrelativistic effective field theory approach, both time-integrated and annual modulation analyses were used to set new limits for the coupling of WIMP-nucleon effective operators at 90% confidence level (C.L.) and improve over the current bounds in the low $m_{\chi}$ region. In the chiral effective field theory approach, data from CDEX-10 were used to set an upper limit on WIMP-pion coupling at 90% C.L. We for the first time extended the limit to the $m_{\chi}, Comment: version accepted by Science China-PMA, 8 pages, 8 figures
- Published
- 2020
- Full Text
- View/download PDF
8. First Experimental Constraints on WIMP Couplings in Effective Field Theory Framework from the CDEX Experiment
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Y Wang, Z Zeng, Q Yue, L T Yang, K J Kang, Y J Li, M Agartioglu, H P An, J P Chang, J H Chen, Y H Chen, J P Cheng, C Y Chiang, W H Dai, Z Deng, X P Geng, H Gong, Q J Guo, X Y Guo, L He, S M He, J W Hu, T S Huang, H X Huang, H T Jia, L P Jia, H B Li, J M Li, J Li, M X Li, R M J Li, X Li, Y L Li, B Liao, F K Lin, S T Lin, S K Liu, Y D Liu, Y Y Liu, Z Z Liu, H Ma, Y C Mao, Q Y Nie, J H Ning, H Pan, N C Qi, C K Qiao, J Ren, X C Ruan, C S Shang, V Sharma, Z She, L Singh, M K Singh, T X Sun, C J Tang, W Y Tang, Y Tian, G F Wang, L Wang, Q Wang, Y X Wang, Z Wang, H T Wong, S Y Wu, Y C Wu, H Y Xing, Y Xu, T Xue, Y L Yan, N Yi, C X Yu, H J Yu, J F Yue, M Zeng, B T Zhang, L Zhang, F S Zhang, M G Zhao, J F Zhou, Z Y Zhou, and J J Zhu
- Published
- 2020
- Full Text
- View/download PDF
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