/ Experiment-Nucl nucl-ex/0610039


Resonance capture cross section of Pb-207


Domingo-Pardo, C. ; Abbondanno, U. ; Aerts, G. ; Alvarez-Pol, H. ; Alvarez-Velarde, F. ; Andriamonje, S. ; Andrzejewski, J. ; Assimakopoulos, P. ; Audouin, L. ; Badurek, G. ; Baumann, P. ; Becvar, F. ; Berthoumieux, E. ; Bisterzo, S. ; Calvino, F. ; Cano-Ott, D. ; Capote, R. ; Carrapico, C. ; Cennini, P. ; Chepel, V. ; Chiaveri, E. ; Colonna, N. ; Cortes, G. ; Couture, A. ; Cox, J. ; Dahlfors, M. ; David, S. ; Dillman, I. ; Dolfini, R. ; Dridi, W. ; Duran, I. ; Eleftheriadis, C. ; Embid-Segura, M. ; Ferrant, L. ; Ferrari, A. ; 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. ; Marrone, S. ; Mastinu, P. ; Mengoni, A. ; Milazzo, P.M. ; Moreau, C. ; Mosconi, M. ; Neves, F. ; Oberhummer, H. ; Oshima, M. ; O'Brien, S. ; Pancin, J. ; Papachristodoulou, C. ; Papadopoulos, C. ; Paradela, C. ; Patronis, N. ; Pavlik, A. ; Pavlopoulos, P. ; Perrot, L. ; 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. ; Terlizzi, R. ; Vannini, G. ; Vaz, P. ; Ventura, Alberto ; Villamarin, D. ; Vincente, M.C. ; Vlachoudis, V. ; Vlastou, R. ; Voss, F. ; Walter, S. ; Wendler, H. ; Wiescher, M. ; Wisshak, K.

Published in: Phys.Rev.
Year: 2006
Vol.: C74
Page No: 055802
Pages: 7

Abstract: The radiative neutron capture cross section of 207Pb has been measured at the CERN neutron time of flight installation n_TOF using the pulse height weighting technique in the resolved energy region. The measurement has been performed with an optimized setup of two C6D6 scintillation detectors, which allowed us to reduce scattered neutron backgrounds down to a negligible level. Resonance parameters and radiative kernels have been determined for 16 resonances by means of an R-matrix analysis in the neutron energy range from 3 keV to 320 keV. Good agreement with previous measurements was found at low neutron energies, whereas substantial discrepancies appear beyond 45 keV. With the present results, we obtain an s-process contribution of 77(8)% to the solar abundance of 207Pb. This corresponds to an r-process component of 23(8)%, which is important for deriving the U/Th ages of metal poor halo stars.

Web-Page: http://dx.doi.org/10.1103/PhysRevC.74.055802; http://link.aps.org/abstract/PRC/V74/E055802

Total numbers of views: 1076
Numbers of unique views: 520
e-proceeding
 Record created 2010-10-29, last modified 2014-01-30


External links:
Download fulltextDOI
Download fulltextPHRVA-C
Rate this document:

Rate this document:
1
2
3
 
(Not yet reviewed)