The 139Lan,gamma cross section: Key for the onset of the s-process
- Terlizzi, R.
- Abbondanno, U.
- Aerts, G.
- Alvarez, H.
- Alvarez-Velarde, H.
- Alvarez-Velarde, F.
- Andriamonje, S.
- Andrzejewski, J.
- Assimakopoulos, P.
- Audouin, L.
- Badurek, G.
- Baumann, P.
- Becvar, F.
- Berthoumieux, E.
- Calviani, M.
- Calvino, F.
- Cano-Ott, D.
- Capote, R.
- De Albornoz, A.C.
- Cennini, P.
- Chepel, V.
- Chiaveri, E.
- Colonna, N.
- Cortes, G.
- Couture, A.
- Cox, J.
- Dahlfors, M.
- David, S.
- Dillmann, I.
- Dolfini, R.
- Domingo-Pardo, C.
- Dridi, W.
- Duran, I.
- Eleftheriadis, C.
- Embid-Segura, M.
- Ferrant, L.
- Ferrari, Anthony
- Ferreira-Marques, R.
- Fitzpatrick, L.
- Frais-Koelbl, H.
- Fujii, K.
- Furman, W.
- Gallino, R.
- Goncalves, I.
- Gonzalez-Romero, E.
- Goverdovski, A.
- Gramegna, F.
- Griesmayer, E.
- Guerrero, C.
- Gunsing, F.
- Haas, B.
- Haight, R.
- Heil, M.
- Herrera-Martinez, A.
- Igashira, M.
- Isaev, S.
- Jericha, E.
- Kadi, Y.
- Kappeler, F.
- Karamanis, D.
- Karadimos, D.
- Kerveno, M.
- Ketlerov, V.
- Koehler, P.
- Konovalov, V.
- Kossionides, E.
- Krticka, M.
- Lamboudis, C.
- Leeb, H.
- Lindote, A.
- Lopes, I.
- Lozano, M.
- Lukic, S.
- Marganiec, J.
- Marques, L.
- Marrone, S.
- Massimi, C.
- Mastinu, P.
- Mengoni, A.
- Milazzo, P.M.
- Moreau, C.
- Mosconi, M.
- Neves, F.
- Oberhummer, H.
- O'Brien, S.
- Pancin, J.
- Papachristodoulou, C.
- Papadopoulos, C.
- Paradela, C.
- Patronis, N.
- Pavlik, A.
- Pavlopoulos, P.
- Perrot, L.
- Pignatari, M.
- Plag, R.
- Plompen, A.
- Plukis, A.
- Poch, A.
- Pretel, C.
- Quesada, J.
- Rauscher, T.
- Reifarth, R.
- Rosetti, M.
- Rubbia, C.
- Rudolf, G.
- Rullhusen, P.
- Salgado, J.
- Sarchiapone, L.
- Savvidis, I.
- Stephan, C.
- Tagliente, G.
- Tain, J.L.
- Tassan-Got, L.
- Tavora, L.
- Vannini, G.
- Vaz, P.
- Ventura, A.
- Villamarin, D.
- Vincente, M.C.
- Vlachoudis, V.
- Vlastou, R.
- Voss, F.
- Walter, S.
- Wendler, H.
- Wiescher, M.
- Wisshak, K.
DOIAbstract
50 pages and 9 FiguresThe nuclear resonance parameters and the capture cross section of the neutron magic isotope 139La have been measured relative to 197Au in the energy range of 0.6 eV to 9 keV at the neutron time-of-flight (n_TOF) facility at CERN. We describe the experimental apparatus and the data analysis procedures, which concerned mainly the efficiency correction by means of the pulse height weighting function technique and the determination of different background components. We extracted the resonance parameters and the main nuclear quantities such as the resonance integral RI=10.8±1.0b, the average $\gamma$ widths for s and p waves Gamma\gammal=0=50.7±5.4 meV and Gamma gammal=1=33.6±6.9 meV, the nuclear level densities (D)l=0=252...
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