New Determination of the 12C(α, γ)16O Reaction Rate and Its Impact on the Black-hole Mass Gap
We present a precise measurement of the asymptotic normalization coefficient (ANC) for the ^16 O ground state (GS) through the ^12 C( ^11 B, ^7 Li) ^16 O transfer reaction using the Quadrupole‐3‐Dipole (Q3D) magnetic spectrograph. The present work sheds light on the existing discrepancy of more than...
| Main Authors: | , , , , , , , , , , , , , , , , , , , , , , , , |
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| Format: | Article |
| Language: | English |
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IOP Publishing
2023-01-01
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| Series: | The Astrophysical Journal |
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| Online Access: | https://doi.org/10.3847/1538-4357/acb7de |
| _version_ | 1797701437870833664 |
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| author | Yangping Shen Bing Guo Richard J. deBoer Ertao Li Zhihong Li Yunju Li Xiaodong Tang Danyang Pang Sucheta Adhikari Chinmay Basu Jun Su Shengquan Yan Qiwen Fan Jiancheng Liu Chen Chen Zhiyu Han Xinyue Li Gang Lian Tianli Ma Wei Nan Weike Nan Youbao Wang Sheng Zeng Hao Zhang Weiping Liu |
| author_facet | Yangping Shen Bing Guo Richard J. deBoer Ertao Li Zhihong Li Yunju Li Xiaodong Tang Danyang Pang Sucheta Adhikari Chinmay Basu Jun Su Shengquan Yan Qiwen Fan Jiancheng Liu Chen Chen Zhiyu Han Xinyue Li Gang Lian Tianli Ma Wei Nan Weike Nan Youbao Wang Sheng Zeng Hao Zhang Weiping Liu |
| author_sort | Yangping Shen |
| collection | DOAJ |
| description | We present a precise measurement of the asymptotic normalization coefficient (ANC) for the ^16 O ground state (GS) through the ^12 C( ^11 B, ^7 Li) ^16 O transfer reaction using the Quadrupole‐3‐Dipole (Q3D) magnetic spectrograph. The present work sheds light on the existing discrepancy of more than 2 orders of magnitude between the previously reported GS ANC values. This ANC is believed to have a strong effect on the ^12 C( α , γ ) ^16 O reaction rate by constraining the external capture to the ^16 O ground state, which can interfere with the high-energy tail of the 2 ^+ subthreshold state. Based on the new ANC, we determine the astrophysical S -factor and the stellar rate of the ^12 C( α , γ ) ^16 O reaction. An increase of up to 21% in the total reaction rate is found within the temperature range of astrophysical relevance compared with the previous recommendation of a recent review. Finally, we evaluate the impact of our new rate on the pair-instability mass gap for black holes (BH) by evolving massive helium core stars using the MESA stellar evolution code. The updated ^12 C( α , γ ) ^16 O reaction rate decreases the lower and upper edges of the BH gap about 12% and 5%, respectively. |
| first_indexed | 2024-03-12T04:35:25Z |
| format | Article |
| id | doaj.art-1433fb59848d45b182f3e27853186b87 |
| institution | Directory Open Access Journal |
| issn | 1538-4357 |
| language | English |
| last_indexed | 2024-03-12T04:35:25Z |
| publishDate | 2023-01-01 |
| publisher | IOP Publishing |
| record_format | Article |
| series | The Astrophysical Journal |
| spelling | doaj.art-1433fb59848d45b182f3e27853186b872023-09-03T09:55:21ZengIOP PublishingThe Astrophysical Journal1538-43572023-01-0194514110.3847/1538-4357/acb7deNew Determination of the 12C(α, γ)16O Reaction Rate and Its Impact on the Black-hole Mass GapYangping Shen0https://orcid.org/0000-0003-4124-6034Bing Guo1https://orcid.org/0000-0002-4911-0847Richard J. deBoer2https://orcid.org/0000-0003-3784-6360Ertao Li3https://orcid.org/0000-0002-3117-1318Zhihong Li4Yunju Li5Xiaodong Tang6Danyang Pang7Sucheta Adhikari8Chinmay Basu9Jun Su10Shengquan Yan11https://orcid.org/0000-0002-0644-5612Qiwen Fan12Jiancheng Liu13Chen Chen14Zhiyu Han15Xinyue Li16Gang Lian17Tianli Ma18Wei Nan19Weike Nan20Youbao Wang21Sheng Zeng22Hao Zhang23Weiping Liu24China Institute of Atomic Energy , P.O. Box 275(10), Beijing 102413, People’s Republic of China ; ypshen@ciae.ac.cn, guobing@ciae.ac.cnChina Institute of Atomic Energy , P.O. Box 275(10), Beijing 102413, People’s Republic of China ; ypshen@ciae.ac.cn, guobing@ciae.ac.cnDepartment of Physics and Astronomy and the Joint Institute for Nuclear Astrophysics, University of Notre Dame , Notre Dame, Indiana 46556, USA rdeboer1@nd.eduInstitute for Advanced Study in Nuclear Energy & Safety, College of Physics and Optoelectronic Engineering, Shenzhen University , Shenzhen 518060, People’s Republic of China ; let@szu.edu.cnChina Institute of Atomic Energy , P.O. Box 275(10), Beijing 102413, People’s Republic of China ; ypshen@ciae.ac.cn, guobing@ciae.ac.cnChina Institute of Atomic Energy , P.O. Box 275(10), Beijing 102413, People’s Republic of China ; ypshen@ciae.ac.cn, guobing@ciae.ac.cnInstitute of Modern Physics, Chinese Academy of Sciences , Lanzhou 730000, People’s Republic of ChinaSchool of Physics, Beihang University , Beijing 100191, People’s Republic of China; Beijing Key Laboratory of Advanced Nuclear Materials and Physics, Beihang University , Beijing 100191, People’s Republic of ChinaPhysics Department, Techno India University , Kolkata 700091, IndiaNuclear Physics Division, Saha Institute of Nuclear Physics , Kolkata-700064, IndiaCollege of Nuclear Science and Technology, Beijing Normal University , Beijing 100875, People’s Republic of ChinaChina Institute of Atomic Energy , P.O. Box 275(10), Beijing 102413, People’s Republic of China ; ypshen@ciae.ac.cn, guobing@ciae.ac.cnChina Institute of Atomic Energy , P.O. Box 275(10), Beijing 102413, People’s Republic of China ; ypshen@ciae.ac.cn, guobing@ciae.ac.cnChina Institute of Atomic Energy , P.O. Box 275(10), Beijing 102413, People’s Republic of China ; ypshen@ciae.ac.cn, guobing@ciae.ac.cnChina Institute of Atomic Energy , P.O. Box 275(10), Beijing 102413, People’s Republic of China ; ypshen@ciae.ac.cn, guobing@ciae.ac.cnChina Institute of Atomic Energy , P.O. Box 275(10), Beijing 102413, People’s Republic of China ; ypshen@ciae.ac.cn, guobing@ciae.ac.cnChina Institute of Atomic Energy , P.O. Box 275(10), Beijing 102413, People’s Republic of China ; ypshen@ciae.ac.cn, guobing@ciae.ac.cnChina Institute of Atomic Energy , P.O. Box 275(10), Beijing 102413, People’s Republic of China ; ypshen@ciae.ac.cn, guobing@ciae.ac.cnChina Institute of Atomic Energy , P.O. Box 275(10), Beijing 102413, People’s Republic of China ; ypshen@ciae.ac.cn, guobing@ciae.ac.cnChina Institute of Atomic Energy , P.O. Box 275(10), Beijing 102413, People’s Republic of China ; ypshen@ciae.ac.cn, guobing@ciae.ac.cnChina Institute of Atomic Energy , P.O. Box 275(10), Beijing 102413, People’s Republic of China ; ypshen@ciae.ac.cn, guobing@ciae.ac.cnChina Institute of Atomic Energy , P.O. Box 275(10), Beijing 102413, People’s Republic of China ; ypshen@ciae.ac.cn, guobing@ciae.ac.cnChina Institute of Atomic Energy , P.O. Box 275(10), Beijing 102413, People’s Republic of China ; ypshen@ciae.ac.cn, guobing@ciae.ac.cnChina Institute of Atomic Energy , P.O. Box 275(10), Beijing 102413, People’s Republic of China ; ypshen@ciae.ac.cn, guobing@ciae.ac.cnChina Institute of Atomic Energy , P.O. Box 275(10), Beijing 102413, People’s Republic of China ; ypshen@ciae.ac.cn, guobing@ciae.ac.cnWe present a precise measurement of the asymptotic normalization coefficient (ANC) for the ^16 O ground state (GS) through the ^12 C( ^11 B, ^7 Li) ^16 O transfer reaction using the Quadrupole‐3‐Dipole (Q3D) magnetic spectrograph. The present work sheds light on the existing discrepancy of more than 2 orders of magnitude between the previously reported GS ANC values. This ANC is believed to have a strong effect on the ^12 C( α , γ ) ^16 O reaction rate by constraining the external capture to the ^16 O ground state, which can interfere with the high-energy tail of the 2 ^+ subthreshold state. Based on the new ANC, we determine the astrophysical S -factor and the stellar rate of the ^12 C( α , γ ) ^16 O reaction. An increase of up to 21% in the total reaction rate is found within the temperature range of astrophysical relevance compared with the previous recommendation of a recent review. Finally, we evaluate the impact of our new rate on the pair-instability mass gap for black holes (BH) by evolving massive helium core stars using the MESA stellar evolution code. The updated ^12 C( α , γ ) ^16 O reaction rate decreases the lower and upper edges of the BH gap about 12% and 5%, respectively.https://doi.org/10.3847/1538-4357/acb7deBlack holesNuclear astrophysicsNuclear physicsMassive starsAstrophysical black holes |
| spellingShingle | Yangping Shen Bing Guo Richard J. deBoer Ertao Li Zhihong Li Yunju Li Xiaodong Tang Danyang Pang Sucheta Adhikari Chinmay Basu Jun Su Shengquan Yan Qiwen Fan Jiancheng Liu Chen Chen Zhiyu Han Xinyue Li Gang Lian Tianli Ma Wei Nan Weike Nan Youbao Wang Sheng Zeng Hao Zhang Weiping Liu New Determination of the 12C(α, γ)16O Reaction Rate and Its Impact on the Black-hole Mass Gap The Astrophysical Journal Black holes Nuclear astrophysics Nuclear physics Massive stars Astrophysical black holes |
| title | New Determination of the 12C(α, γ)16O Reaction Rate and Its Impact on the Black-hole Mass Gap |
| title_full | New Determination of the 12C(α, γ)16O Reaction Rate and Its Impact on the Black-hole Mass Gap |
| title_fullStr | New Determination of the 12C(α, γ)16O Reaction Rate and Its Impact on the Black-hole Mass Gap |
| title_full_unstemmed | New Determination of the 12C(α, γ)16O Reaction Rate and Its Impact on the Black-hole Mass Gap |
| title_short | New Determination of the 12C(α, γ)16O Reaction Rate and Its Impact on the Black-hole Mass Gap |
| title_sort | new determination of the 12c α γ 16o reaction rate and its impact on the black hole mass gap |
| topic | Black holes Nuclear astrophysics Nuclear physics Massive stars Astrophysical black holes |
| url | https://doi.org/10.3847/1538-4357/acb7de |
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