Abstract
The 24Mg(p,α)21 Na transfer reaction has been previously studied for a spectroscopic study of 21Na [Cha et al., Phys. Rev. C 96, 025810 (2017)]. In this follow-up analysis, the proton decays of the excited states of the radionuclide 21Na, which were measured simultaneously, are reported. By investigating the coincidence between the reaction α-particles and decay protons, we were able to identify three groups of events that are associated with the energy levels in 20Ne. The 20Ne excitation energy plot was obtained as a result. The four lowest known energy levels in 20Ne (the ground state and excited states at Ex = 1.633, 4.247 and 4.966 MeV) were clearly observed.
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References
D. W. Bardayan, J. Phys. G: Nucl. Phys. 43, 043001 (2016).
W. P. Tan et al., Phys. Rev. Lett. 98, 242503 (2007).
C. M. Deibel et al., Phys. Rev. C 80, 035806 (2009).
K. A. Chipps et al., Phys. Rev. C 82, 045803 (2010).
K. A. Chipps et al., Phys. Rev. C 86, 014329 (2012).
K. A. Chipps et al., Phys. Rev. C 95, 044319 (2017).
D. W. Bardayan et al., J. Phys. Conf. Ser. 1308, 012004 (2019).
J. R. Beene et al., J. Phys. G: Nucl. Part. Phys. 38, 024002 (2011).
S. M. Cha et al., Phys. Rev. C 96, 025810 (2017).
D. W. Bardayan et al., Phys. Rev. C 63, 065802 (2001).
R. B. Firestone, Nucl. Data Sheets 127, 1 (2015).
D. R. Tilley et al., Nucl. Phys. A 636, 249 (1998).
Acknowledgments
This work was supported by a National Research Foundation of Korea (NRF) grant funded by the Korea government Ministry of Education, Science, and Technology (MEST) (Nos. NRF-2013M7A1A1075764, NRF-2020R1A2C1005981, and NRF-2019R1F1A1058370). This research was supported in part by the National Nuclear Security Administration under the Stewardship Science Academic Alliances program through the U.S. DOE Cooperative Agreement No. DE-FG52-08NA28552 with Rutgers University and Oak Ridge Associated Universities. This work was also supported in part by the Office of Nuclear Physics, Office of Science of the U.S. DOE under Contracts No. DE-FG02-96ER40955 with Tennessee Technological University, No. DE-FG02-96ER40983 with the University of Tennessee, and DE-AC-05-00OR22725 at Oak Ridge National Laboratory, and by the National Science Foundation under Contract No. PHY-1713857 with University of Notre Dame and NO. PHY-1404218 with Rutgers University.
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Kim, M.J., Chae, K.Y., Cha, S.M. et al. Proton Decay of 21Na for 20Ne Energy Levels. J. Korean Phys. Soc. 77, 383–387 (2020). https://doi.org/10.3938/jkps.77.383
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DOI: https://doi.org/10.3938/jkps.77.383