Ribeiro, G., Nacher, E., Tengblad, O., Diaz Fernandez, P., Aksyutina, Y., Alvarez-Pol, H., Atar, L., Aumann, T., Avdeichikov, V, Beceiro-Novo, S., Bemmerer, D., Benlliure, J., Bertulani, C. A., Boillos, J. M., Boretzky, K., Borge, M. J. G., Caamano, M., Caesar, C., Casarejos, E., Catford, W., Cederkall, J., Chartier, M., Chulkov, L., Cortina-Gil, D., Cravo, E., Crespo, R., Pramanik, U. Datta, Dillmann, I, Elekes, Z., Enders, J., Ershova, O., Estrade, A., Farinon, F., Fraile, L. M., Freer, M., Fynbo, H. O. U., Galaviz, D., Geissel, H., Gernhaeuser, R., Golubev, P., Goebel, K., Hagdahl, J., Heftrich, T., Heil, M., Heine, M., Heinz, A., Henriques, A., Holl, M., Hufnagel, A., Ignatov, A., Johansson, H. T., Jonson, B., Kalantar-Nayestanaki, N., Kanungo, R., Kelic-Heil, A., Kurz, N., Kroell, T., Labiche, M., Langer, C., Le Bleis, T., Lemmon, R., Lindberg, S., Machado, J., Marganiec, J., Movsesyan, A., Nilsson, T., Nociforo, C., Panin, V, Paschalis, S., Perea, A., Petri, M., Pietri, S., Plag, R., Reifarth, R., Rigollet, C., Riisager, K., Rossi, D., Roeder, M., Savran, D., Scheit, H., Simon, H., Sorlin, O., Syndikus, I, Taylor, J. T., Thies, R., Velho, P., Wagner, A., Wamers, F., Vandebrouck, M., Weick, H., Wheldon, C., Wilson, G., Wimmer, C., Winfield, J. S., Woods, P., Zhukov, M., V, Zilges, A. and Zuber, K. (2018). Structure of Be-13 studied in proton knockout from B-14. Phys. Rev. C, 98 (2). COLLEGE PK: AMER PHYSICAL SOC. ISSN 2469-9993

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Abstract

The neutron-unbound isotope Be-13 has been studied in several experiments using different reactions, different projectile energies, and different experimental setups. There is, however, no real consensus in the interpretation of the data, in particular concerning the structure of the low-lying excited states. Gathering new experimental information, which may reveal the Be-13 structure, is a challenge, particularly in light of its bridging role between Be-12, where the N = 8 neutron shell breaks down, and the Borromean halo nucleus Be-14. The purpose of the present study is to investigate the role of bound excited states in the reaction product Be-12 after proton knockout from B-14, by measuring coincidences between Be-12, neutrons, and gamma rays originating from de-excitation of states fed by neutron decay of Be-13. The Be-13 isotopes were produced in proton knockout from a 400 MeV/nucleon B-14 beam impinging on a CH2 target. The Be-12-n relative-energy spectrum d sigma/dE(fn) was obtained from coincidences between Be-12(g.s.) and a neutron, and also as threefold coincidences by adding gamma rays, from the de-excitation of excited states in Be-12. Neutron decay from the first 5/2(+) state in Be-13 to the 2(+) state in Be-12 at 2.11 MeV is confirmed. An energy independence of the proton-knockout mechanism is found from a comparison with data taken with a 35 MeV/nucleon B-14 beam. A low-lying p-wave resonance in Be-13(1/2(-)) is confirmed by comparing proton- and neutron-knockout data from B-14 and Be-14.

Item Type: Journal Article
Creators:
CreatorsEmailORCIDORCID Put Code
Ribeiro, G.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Nacher, E.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Tengblad, O.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Diaz Fernandez, P.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Aksyutina, Y.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Alvarez-Pol, H.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Atar, L.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Aumann, T.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Avdeichikov, VUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Beceiro-Novo, S.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Bemmerer, D.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Benlliure, J.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Bertulani, C. A.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Boillos, J. M.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Boretzky, K.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Borge, M. J. G.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Caamano, M.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Caesar, C.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Casarejos, E.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Catford, W.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Cederkall, J.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Chartier, M.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Chulkov, L.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Cortina-Gil, D.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Cravo, E.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Crespo, R.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Pramanik, U. DattaUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Dillmann, IUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Elekes, Z.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Enders, J.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Ershova, O.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Estrade, A.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Farinon, F.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Fraile, L. M.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Freer, M.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Fynbo, H. O. U.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Galaviz, D.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Geissel, H.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Gernhaeuser, R.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Golubev, P.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Goebel, K.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Hagdahl, J.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Heftrich, T.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Heil, M.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Heine, M.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Heinz, A.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Henriques, A.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Holl, M.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Hufnagel, A.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Ignatov, A.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Johansson, H. T.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Jonson, B.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Kalantar-Nayestanaki, N.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Kanungo, R.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Kelic-Heil, A.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Kurz, N.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Kroell, T.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Labiche, M.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Langer, C.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Le Bleis, T.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Lemmon, R.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Lindberg, S.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Machado, J.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Marganiec, J.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Movsesyan, A.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Nilsson, T.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Nociforo, C.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Panin, VUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Paschalis, S.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Perea, A.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Petri, M.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Pietri, S.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Plag, R.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Reifarth, R.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Rigollet, C.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Riisager, K.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Rossi, D.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Roeder, M.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Savran, D.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Scheit, H.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Simon, H.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Sorlin, O.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Syndikus, IUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Taylor, J. T.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Thies, R.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Velho, P.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Wagner, A.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Wamers, F.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Vandebrouck, M.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Weick, H.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Wheldon, C.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Wilson, G.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Wimmer, C.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Winfield, J. S.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Woods, P.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Zhukov, M., VUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Zilges, A.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Zuber, K.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
URN: urn:nbn:de:hbz:38-176670
DOI: 10.1103/PhysRevC.98.024603
Journal or Publication Title: Phys. Rev. C
Volume: 98
Number: 2
Date: 2018
Publisher: AMER PHYSICAL SOC
Place of Publication: COLLEGE PK
ISSN: 2469-9993
Language: English
Faculty: Unspecified
Divisions: Unspecified
Subjects: no entry
Uncontrolled Keywords:
KeywordsLanguage
ONE-NEUTRON KNOCKOUT; SINGLE-PARTICLE; UNBOUND STATES; NUCLEI; SPECTROSCOPY; MODELMultiple languages
Physics, NuclearMultiple languages
Refereed: Yes
URI: http://kups.ub.uni-koeln.de/id/eprint/17667

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