α-cluster structure of 18Ne

Barbui, M.; Volya, A.; Aboud, E.; Ahn, S.; Bishop, J.; Goldberg, V. Z.; Hooker, J.; Hunt, C. H.; Jayatissa, H.; Kokalova, Tz.; Koshchiy, E.; Pirrie, S.; Pollacco, E.; Roeder, B. T.; Saastamoinen, A.; Upadhyayula, S.; Wheldon, C.; Rogachev, G. V.

doi:10.1103/PhysRevC.106.054310

α-cluster structure of ¹⁸Ne

Journal Article · Tue Nov 08 00:00:00 EST 2022 · Physical Review. C

DOI:https://doi.org/10.1103/PhysRevC.106.054310· OSTI ID:2870497

^[1]; Volya, A. ^[2]; ^[3]; Ahn, S. ^[4]; ^[1]; ^[1]; Hooker, J. ^[1]; Hunt, C. H. ^[5]; ^[6]; Kokalova, Tz. ^[7]; Koshchiy, E. ^[1]; ^[7]; ^[8]; Roeder, B. T. ^[1]; Saastamoinen, A. ^[1]; ^[9]; Wheldon, C. ^[7]; Rogachev, G. V. ^[1]

Texas A&M University, College Station, TX (United States)
Texas A&M University, College Station, TX (United States); Florida State University, Tallahassee, FL (United States)
Texas A&M University, College Station, TX (United States); Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States)
Texas A&M University, College Station, TX (United States); Institute for Basic Science, Daejeon (Korea)
Texas A&M University, College Station, TX (United States); Michigan State University, East Lansing, MI (United States)
Texas A&M University, College Station, TX (United States); Argonne National Laboratory (ANL), Argonne, IL (United States)
University of Birmingham (United Kingdom)
IRFU, CEA, Gif-sur-Yvette (France)
Texas A&M University, College Station, TX (United States); TRIUMF, Vancouver, BC (Canada)

In this work, we investigate α-clustering in ¹⁸Ne and compare it with what is known about clustering in the mirror nucleus ¹⁸O. The excitation function for resonant elastic scattering of ¹⁴O + α was measured in inverse kinematics using the TexAT active-target detector system, covering excitation energies from 8 to 17 MeV. The data were analyzed using a multi-channel R-matrix approach. Detailed spectroscopic information—including excitation energies, spin and parity assignments, and partial α and total widths—was extracted from the R-matrix analysis and compared with theoretical models and previously available data. Correspondence between levels in ¹⁸O and ¹⁸Ne is established. An extensive shell-model analysis of the ¹⁸O–¹⁸Ne mirror pair shows very good agreement between theory and experiment, especially in the distribution of clustering strength. The comparison reveals that certain states, particularly at higher excitation energies, exhibit significantly stronger α-cluster character than predicted. This suggests that these states have a collective structure aligned with the corresponding α-reaction channel.

View Accepted Manuscript (DOE)

Research Organization:: Florida State University, Tallahassee, FL (United States); Texas A & M Univ., College Station, TX (United States)

Sponsoring Organization:: Science and Technology Facilities Council (STFC); UK Science and Technology Facilities Council (STFC); USDOE; USDOE Office of Science (SC), Nuclear Physics (NP)

Grant/Contract Number:: FG03-93ER40773; SC0009883

OSTI ID:: 2870497

Alternate ID(s):: OSTI ID: 1967506

Journal Information:: Physical Review. C, Journal Name: Physical Review. C Journal Issue: 5 Vol. 106; ISSN 2469-9985; ISSN 2469-9993

Publisher:: American Physical Society (APS)Copyright Statement

Country of Publication:: United States

Language:: English

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