Proton Decay of 21Na for 20Ne Energy Levels

M. J. Kim; K. Y. Chae; S. M. Cha; S. H. Ahn; D. W. Bardayan; K. A. Chipps; J. A. Cizewski; M. E. Howard; B. Manning; A. Ratkiewicz; R. L. Kozub; K. Kwak; M. Matos; P. D. O’Malley; S. Strauss; S. D. Pain; S. T. Pittman; M. S. Smith; W. A. Peters

doi:10.3938/jkps.77.383

Proton Decay of ²¹Na for ²⁰Ne Energy Levels

M. J. Kim, K. Y. Chae, S. M. Cha, S. H. Ahn, D. W. Bardayan, K. A. Chipps, J. A. Cizewski, M. E. Howard, B. Manning, A. Ratkiewicz, R. L. Kozub, K. Kwak, M. Matos, P. D. O’Malley, S. Strauss, S. D. Pain, S. T. Pittman, M. S. Smith, W. A. Peters

Nuclear Structure and Nuclear Astrophysi

Research output: Contribution to journal › Article › peer-review

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 E_x = 1.633, 4.247 and 4.966 MeV) were clearly observed.

Original language	English
Pages (from-to)	383-387
Number of pages	5
Journal	Journal of the Korean Physical Society
Volume	77
Issue number	5
DOIs	https://doi.org/10.3938/jkps.77.383
State	Published - Sep 1 2020

Funding

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.

Keywords

Excitation energy
Proton decay
Radionuclide
Transfer reaction

Access to Document

10.3938/jkps.77.383

Cite this

Kim, M. J., Chae, K. Y., Cha, S. M., Ahn, S. H., Bardayan, D. W., Chipps, K. A., Cizewski, J. A., Howard, M. E., Manning, B., Ratkiewicz, A., Kozub, R. L., Kwak, K., Matos, M., O’Malley, P. D., Strauss, S., Pain, S. D., Pittman, S. T., Smith, M. S., & Peters, W. A. (2020). Proton Decay of ²¹Na for ²⁰Ne Energy Levels. Journal of the Korean Physical Society, 77(5), 383-387. https://doi.org/10.3938/jkps.77.383

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title = "Proton Decay of 21Na for 20Ne Energy Levels",

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.",

keywords = "Excitation energy, Proton decay, Radionuclide, Transfer reaction",

author = "Kim, \{M. J.\} and Chae, \{K. Y.\} and Cha, \{S. M.\} and Ahn, \{S. H.\} and Bardayan, \{D. W.\} and Chipps, \{K. A.\} and Cizewski, \{J. A.\} and Howard, \{M. E.\} and B. Manning and A. Ratkiewicz and Kozub, \{R. L.\} and K. Kwak and M. Matos and O{\textquoteright}Malley, \{P. D.\} and S. Strauss and Pain, \{S. D.\} and Pittman, \{S. T.\} and Smith, \{M. S.\} and Peters, \{W. A.\}",

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Kim, MJ, Chae, KY, Cha, SM, Ahn, SH, Bardayan, DW, Chipps, KA, Cizewski, JA, Howard, ME, Manning, B, Ratkiewicz, A, Kozub, RL, Kwak, K, Matos, M, O’Malley, PD, Strauss, S, Pain, SD, Pittman, ST, Smith, MS & Peters, WA 2020, 'Proton Decay of ²¹Na for ²⁰Ne Energy Levels', Journal of the Korean Physical Society, vol. 77, no. 5, pp. 383-387. https://doi.org/10.3938/jkps.77.383

TY - JOUR

T1 - Proton Decay of 21Na for 20Ne Energy Levels

AU - Kim, M. J.

AU - Chae, K. Y.

AU - Cha, S. M.

AU - Ahn, S. H.

AU - Bardayan, D. W.

AU - Chipps, K. A.

AU - Cizewski, J. A.

AU - Howard, M. E.

AU - Manning, B.

AU - Ratkiewicz, A.

AU - Kozub, R. L.

AU - Kwak, K.

AU - Matos, M.

AU - O’Malley, P. D.

AU - Strauss, S.

AU - Pain, S. D.

AU - Pittman, S. T.

AU - Smith, M. S.

AU - Peters, W. A.

PY - 2020/9/1

Y1 - 2020/9/1

N2 - 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.

AB - 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.

KW - Excitation energy

KW - Proton decay

KW - Radionuclide

KW - Transfer reaction

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