Revel, A., Sorlin, O., Marques, F. M., Kondo, Y., Kahlbow, J., Nakamura, T., Orr, N. A., Nowacki, F., Tostevin, J. A., Yuan, C. X., Achouri, N. L., Al Falou, H., Atar, L., Aumann, T., Baba, H., Boretzky, K., Caesar, C., Calvet, D., Chae, H., Chiga, N., Corsi, A., Crawford, H. L., Delaunay, F., Delbart, A., Deshayes, Q., Dombradi, Z., Douma, C. A., Elekes, Z., Fallon, P., Gasparic, I, Gheller, J-M, Gibelin, J., Gillibert, A., Harakeh, M. N., He, W., Hirayama, A., Hoffman, C. R., Holl, M., Horvat, A., Horvath, A., Hwang, J. W., Isobe, T., Kalantar-Nayestanaki, N., Kawase, S., Kim, S., Kisamori, K., Kobayashi, T., Koerper, D., Koyama, S., Kuti, I, Lapoux, V, Lindberg, S., Masuoka, S., Mayer, J., Miki, K., Murakami, T., Najafi, M., Nakano, K., Nakatsuka, N., Nilsson, T., Obertelli, A., Santos, F. de Oliveira, Otsu, H., Ozaki, T., Panin, V, Paschalis, S., Rossi, D., Saito, A. T., Saito, T., Sasano, M., Sato, H., Satou, Y., Scheit, H., Schindler, F., Schrock, P., Shikata, M., Shimizu, Y., Simon, H., Sohler, D., Stuhl, L., Takeuchi, S., Tanaka, M., Thoennessen, M., Tornqvist, H., Togano, Y., Tomai, T., Tscheuschner, J., Tsubota, J., Uesaka, T., Yang, Z., Yasuda, M. and Yoneda, K. (2020). Extending the Southern Shore of the Island of Inversion to F-28. Phys. Rev. Lett., 124 (15). COLLEGE PK: AMER PHYSICAL SOC. ISSN 1079-7114

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Abstract

Detailed spectroscopy of the neutron-unbound nucleus F-28 has been performed for the first time following proton/neutron removal from Ne-29/F-29 beams at energies around 230 MeV=nucleon. The invariant-mass spectra were reconstructed for both the F-27((*)) + n and F-26((*)) + 2n coincidences and revealed a series of well-defined resonances. A near-threshold state was observed in both reactions and is identified as the F-28 ground state, with S-n(F-28) = -199(6) keV, while analysis of the 2n decay channel allowed a considerably improved S-n(F-27) = 1620(60) keV to be deduced. Comparison with shell-model predictions and eikonal-model reaction calculations have allowed spin-parity assignments to be proposed for some of the lower-lying levels of F-28. Importantly, in the case of the ground state, the reconstructed F-27 + n momentum distribution following neutron removal from F-29 indicates that it arises mainly from the 1p(3/2) neutron intruder configuration. This demonstrates that the island of inversion around N = 20 includes F-28, and most probably F-29, and suggests that O-28 is not doubly magic.

Item Type: Journal Article
Creators:
CreatorsEmailORCIDORCID Put Code
Revel, A.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Sorlin, O.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Marques, F. M.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Kondo, Y.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Kahlbow, J.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Nakamura, T.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Orr, N. A.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Nowacki, F.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Tostevin, J. A.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Yuan, C. X.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Achouri, N. L.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Al Falou, H.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Atar, L.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Aumann, T.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Baba, H.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Boretzky, K.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Caesar, C.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Calvet, D.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Chae, H.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Chiga, N.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Corsi, A.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Crawford, H. L.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Delaunay, F.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Delbart, A.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Deshayes, Q.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Dombradi, Z.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Douma, C. A.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Elekes, Z.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Fallon, P.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Gasparic, IUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Gheller, J-MUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Gibelin, J.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Gillibert, A.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Harakeh, M. N.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
He, W.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Hirayama, A.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Hoffman, C. R.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Holl, M.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Horvat, A.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Horvath, A.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Hwang, J. W.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Isobe, T.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Kalantar-Nayestanaki, N.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Kawase, S.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Kim, S.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Kisamori, K.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Kobayashi, T.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Koerper, D.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Koyama, S.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Kuti, IUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Lapoux, VUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Lindberg, S.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Masuoka, S.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Mayer, J.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Miki, K.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Murakami, T.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Najafi, M.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Nakano, K.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Nakatsuka, N.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Nilsson, T.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Obertelli, A.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Santos, F. de OliveiraUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Otsu, H.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Ozaki, T.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Panin, VUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Paschalis, S.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Rossi, D.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Saito, A. T.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Saito, T.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Sasano, M.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Sato, H.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Satou, Y.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Scheit, H.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Schindler, F.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Schrock, P.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Shikata, M.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Shimizu, Y.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Simon, H.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Sohler, D.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Stuhl, L.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Takeuchi, S.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Tanaka, M.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Thoennessen, M.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Tornqvist, H.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Togano, Y.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Tomai, T.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Tscheuschner, J.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Tsubota, J.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Uesaka, T.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Yang, Z.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Yasuda, M.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Yoneda, K.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
URN: urn:nbn:de:hbz:38-336948
DOI: 10.1103/PhysRevLett.124.152502
Journal or Publication Title: Phys. Rev. Lett.
Volume: 124
Number: 15
Date: 2020
Publisher: AMER PHYSICAL SOC
Place of Publication: COLLEGE PK
ISSN: 1079-7114
Language: English
Faculty: Unspecified
Divisions: Unspecified
Subjects: no entry
Uncontrolled Keywords:
KeywordsLanguage
MODEL DESCRIPTION; NUCLEIMultiple languages
Physics, MultidisciplinaryMultiple languages
URI: http://kups.ub.uni-koeln.de/id/eprint/33694

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