Structure of C9 through proton resonance scattering with the Texas Active Target detector

Hooker, J.; Rogachev, G. V.; Koshchiy, E.; Ahn, S.; Barbui, M.; Goldberg, V. Z.; Hunt, C.; Jayatissa, H.; Pollacco, E. C.; Roeder, B. T.; Saastamoinen, A.; Upadhyayula, S.

doi:10.1103/PhysRevC.100.054618

Title: Structure of ${}^{9}C$ through proton resonance scattering with the Texas Active Target detector

Journal Article · 20 November 2019 · Physical Review C

DOI: https://doi.org/10.1103/PhysRevC.100.054618 · OSTI ID:1578286

Hooker, J. ^[1];

^[2]; Koshchiy, E. ^[2]; Ahn, S. ^[2]; Barbui, M. ^[2]; Goldberg, V. Z. ^[2]; Hunt, C. ^[2]; Jayatissa, H. ^[3]; Pollacco, E. C. ^[4]; Roeder, B. T. ^[2]; Saastamoinen, A. ^[2]; Upadhyayula, S. ^[2]

Texas A & M Univ., College Station, TX (United States); Univ. of Tennessee, Knoxville, TN (United States); Texas A&M University
Texas A & M Univ., College Station, TX (United States)
Texas A & M Univ., College Station, TX (United States); Argonne National Lab. (ANL), Argonne, IL (United States)
IRFU, CEA, Gif-Sur-Ivette (France)

Structure of very exotic nucleus, carbon-9, has been studied using novel detector - Texas Active Target (TexAT). Carbon-9 can be produced by removing three neutrons from the stable carbon-12 isotope, which we inhale every few seconds as part of carbon-dioxide gas. The structure of this exotic carbon, carbon-9, is very different from the stable carbon (carbon-12) and much less explored due to experimental difficulties of producing it. Yet, it is important for benchmarking the contemporary, state-of-the-art theories of nuclear structure. In particular, excitation energy of the positive parity states, that indicate an onset of the sd-shell, was not known in 9C. Here, we have conclusively identified the first positive parity state in 9C. It was made possible by the new capabilities provided buy TexAT.

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Research Organization:: Texas A & M Univ., College Station, TX (United States)

Sponsoring Organization:: USDOE National Nuclear Security Administration (NNSA); USDOE Office of Science (SC)

Grant/Contract Number:: NA0003841; FG02-93ER40773

OSTI ID:: 1578286

Journal Information:: Physical Review C, Journal Name: Physical Review C Journal Issue: 5 Vol. 100; ISSN PRVCAN; ISSN 2469-9985

Publisher:: American Physical Society (APS)Copyright Statement

Country of Publication:: United States

Language:: English

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