𝛼-cluster structure in 19F and 19Ne in resonant scattering

Goldberg, V. Z.; Nurmukhanbetova, A. K.; Volya, A.; Nauruzbayev, D. K.; Serikbayeva, G. E.; Rogachev, G. V.

doi:10.1103/PhysRevC.105.014615

𝛼-cluster structure in ¹⁹F and ¹⁹Ne in resonant scattering

Journal Article · Tue Jan 18 04:00:00 EST 2022 · Physical Review. C

DOI:https://doi.org/10.1103/PhysRevC.105.014615· OSTI ID:2947870

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Texas A&M University, College Station, TX (United States)
Nazarbayev University, Nur-Sultan (Kazakhstan)
Florida State University, Tallahassee, FL (United States); Texas A&M University, College Station, TX (United States)
Nazarbayev University Research and Innovation System, Nur-Sultan (Kazakhstan); Nazarbayev University, Nur-Sultan (Kazakhstan)

This work investigates the nuclear structure of ¹⁹F and ¹⁹Ne, which is important for understanding α clustering in the A = 20 mass region and for astrophysical applications. The only high-resolution, broad angular- and energy-range study of the ¹⁹F resonance structure in α + ¹⁵N scattering was published over 60 years ago, when a detailed analysis of complex excitation functions with overlapping resonances and multiple decay channels was not feasible. We have performed a modern R-matrix analysis of these data to assign spins and determine resonance parameters for levels in ¹⁹F up to an excitation energy of 8.2 MeV. Our R-matrix parameters were successfully tested by fitting recent α + ¹⁵N data obtained with the Thick Target Inverse Kinematics (TTIK) method at 180°. The new ¹⁹F parameters were then used to fit TTIK data for α + ¹⁵O, the mirror resonant reaction. In conclusion, comparison of these isobaric mirror reactions provides valuable insight into the underlying nuclear structure.

View Accepted Manuscript (DOE)

Research Organization:: Florida State University, Tallahassee, FL (United States)

Sponsoring Organization:: USDOE Office of Science (SC), Nuclear Physics (NP); Ministry of Education and Science of the Republic of Kazakhstan

Grant/Contract Number:: SC0009883; FG02-93ER40773

OSTI ID:: 2947870

Alternate ID(s):: OSTI ID: 1979853

Journal Information:: Physical Review. C, Journal Name: Physical Review. C Journal Issue: 1 Vol. 105; ISSN 2469-9985; ISSN 2469-9993

Publisher:: American Physical Society (APS)Copyright Statement

Country of Publication:: United States

Language:: English

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