Neutron capture cross section measurement of Sm-151 at the CERN neutron time of flight facility (n_TOF)

U. Abbondanno, G. Aerts, F. Alvarez-Velarde, H. Alvarez-Pol, S. Andriamonje, J. Andrzejewski, G. Badurek, P. Baumann, F. Becvar, J. Benlliure, E. Berthoumieux, F. Calvino, D. Cano-Ott, R. Capote, P. Cennini, V. Chepel, E. Chiaveri, N. Colonna, G. Cortes, D. CortinaA. Couture, J. Cox, S. Dababneh, M. Dahlfors, S. David, R. Dolfini, C. Domingo-Pardo, R.B. Duran, M. Embid-Segura, L. Ferrant, A. Ferrari, R. Ferreira-Marques, H. Frais-Koelbl, W. Furman, I. F. Goncalves, R. Gallino, E. Gonzalez-Romero, A. Goverdovski, F. Gramegna, E. Griesmayer, F. Gunsing, B. Haas, R. Haight, M. Heil, A. Herrera-Martinez, S. Isaev, E. Jericha, F. Kappeler, Y. Kadi, T. Rauscher, n TOF Collaboration

Research output: Contribution to journalArticlepeer-review

73 Citations (Scopus)


The Sm-151(n,gamma)Sm-152 cross section has been measured at the spallation neutron facility n_TOF at CERN in the energy range from 1 eV to 1 MeV. The new facility combines excellent resolution in neutron time-of-flight, low repetition rates, and an unsurpassed instantaneous luminosity, resulting in rather favorable signal/background ratios. The Sm-151 cross section is of importance for characterizing neutron capture nucleosynthesis in asymptotic giant branch stars. At a thermal energy of kT=30 keV the Maxwellian averaged cross section of this unstable isotope (t(1/2)=93 yr) was determined to be 3100+/-160 mb, significantly larger than theoretical predictions.

Original languageEnglish
Article number161103
Number of pages5
JournalPhysical Review Letters
Issue number16
Publication statusPublished - 15 Oct 2004




Dive into the research topics of 'Neutron capture cross section measurement of Sm-151 at the CERN neutron time of flight facility (n_TOF)'. Together they form a unique fingerprint.

Cite this