@article{7db704302b7e49ce9e2d106b22925d90,
title = "Experimental study of Gamow-Teller transitions via the high-energy-resolution O 18 (He 3,t) F 18 reaction: Identification of the low-energy {"}super{"}-Gamow-Teller state",
abstract = "Using the high-resolution O18(He3,t)F18 reaction at 0 and at 140 MeV/nucleon, Gamow-Teller (GT) transitions were studied. A high energy resolution of 31 keV was achieved by applying dispersion matching techniques. The main part of the observed GT transition strength is concentrated in the transition to the F18 ground state (g.s.). The absolute values of the reduced GT transition strengths, B(GT), were derived up to Ex=12 MeV assuming proportionality between the B(GT) values and the reaction cross sections at 0. The B(GT) value obtained from the β decay of F18 (g.s.) →O18 (g.s.) was used to determine the proportionality constant. A total B(GT) of 4.06(5) was found and 76(1)% of the strength is concentrated to the ground state of F18. The obtained B(GT) values were compared with those from the O18(p,n)F18 reaction and the mirror symmetric β+ decay of Ne18→F18. The candidates for 1+ states with isospin T=1 were identified by comparison with the O18(p,p′) data. The results of shell-model and quasiparticle-random-phase approximation calculations suggest constructive contributions of various configurations to the F18 ground state, suggesting that this state is the low-energy super GT state.",
author = "H. Fujita and Y. Fujita and Y. Utsuno and K. Yoshida and T. Adachi and A. Algora and M. Csatl{\'o}s and Deaven, {J. M.} and E. Estevez-Aguado and Guess, {C. J.} and J. Guly{\'a}s and K. Hatanaka and K. Hirota and R. Hutton and D. Ishikawa and A. Krasznahorkay and H. Matsubara and F. Molina and H. Okamura and Ong, {H. J.} and G. Perdikakis and B. Rubio and C. Scholl and Y. Shimbara and G. S{\"u}soy and T. Suzuki and A. Tamii and Thies, {J. H.} and Zegers, {R. G.T.} and J. Zenihiro",
note = "Funding Information: The () experiment was performed at RCNP, Osaka University, under Experimental Program No. E307. We thank all the staffs of the accelerator group at RCNP for providing a high-quality beam. H.F. and Y.F. also acknowledge the support of MEXT, Japan, under Grants No. 18540270, No. 22540310, and No. 15K05104. Y.F. and B.R. are grateful for the support of the Japan-Spain collaboration program by JSPS and CSIC; A.A., E.E.A., and B.R. are thankful for the support of the Spanish Ministerio de Economa y Competitividad under Grants No. FPA2005-03993, No. FPA2008-06419-C02-01, No. FPA2011-24553, No. FPA2014-52823-C2-1-P, and No. FPA2017-83946-C2-1-P and the program Severo Ochoa (SEV-2014-0398). G.S. acknowledges the support of TUBITAK, Turkey under Research Scholarship No. BIDEB 2214. J.M.D., C.J.G., R.M., G.P., and R.G.T.Z. are grateful for the support of the U.S. NSF under Grants No. PHY-0606007 and No. PHY-0822648 (JINA). M.C., J.G., and A.K. acknowledge the support of the NKFI OTKA Foundation, Hungary, under Grant No. K124810. This work was in part supported by the RIKEN-CNS joint research project on large-scale nuclear-structure calculations. K.Y. acknowledges the support of the JSPS KAKENHI (Grants No. JP16K17687, No. JP18H04569, No. JP19K03824, and No. JP19K03872) and the JSPS-NSFC Bilateral Program for Joint Research Project on Nuclear mass and life for unraveling mysteries of the r-process. The QRPA calculations were performed on CRAY XC40 at the Yukawa Institute for Theoretical Physics, Kyoto University, and on COMA (PACS-IX) at the Center for Computational Sciences, University of Tsukuba. Publisher Copyright: {\textcopyright} 2019 American Physical Society.",
year = "2019",
month = sep,
day = "26",
doi = "10.1103/PhysRevC.100.034618",
language = "English",
volume = "100",
journal = "Physical Review C",
issn = "2469-9985",
publisher = "American Physical Society",
number = "3",
}