Production cross sections of heavy neutron-rich nuclei approaching the nucleosynthesis r-process path around $A=195$

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Production cross sections of heavy neutron-rich nuclei approaching the nucleosynthesis r-process path around $A = 195$

T. Kurtukian-Nieto, J. Benlliure, K.-H. Schmidt, L. Audouin, F. Becker, B. Blank, E. Casarejos, F. Farget, M. Fernández-Ordóñez, J. Giovinazzo, D. Henzlova, B. Jurado, J. Pereira, and O. Yordanov

Phys. Rev. C 89, 024616 – Published 27 February 2014

Abstract

In the present work we were able to synthesize and measure with high accuracy the production cross sections of more than 190 heavy neutron-rich nuclei by the in-flight fragmentation of relativistic $^{208}$ Pb projectiles, 26 of which were produced for the first time. This work has shown that the $N = 126$ region far below the doubly magic $^{208}$ Pb has become accessible experimentally and represents a step further towards the study of heavy neutron-rich nuclei approaching the r-process waiting point at $A = 195$ .

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Received 17 December 2013

DOI:https://doi.org/10.1103/PhysRevC.89.024616

Authors & Affiliations

T. Kurtukian-Nieto^1,*, J. Benlliure¹, K.-H. Schmidt², L. Audouin³, F. Becker^2,†, B. Blank⁴, E. Casarejos^1,‡, F. Farget⁵, M. Fernández-Ordóñez¹, J. Giovinazzo⁴, D. Henzlova^2,§, B. Jurado⁴, J. Pereira^1,∥, and O. Yordanov^2,¶

¹Departmento de Física de Partículas, Universidade de Santiago de Compostela, E-15782 Santiago de Compostela, Spain
²GSI-Helmholtzzentrum für Schwerionenforschung GmbH, D-64291 Darmstadt, Germany
³Institut de Physique Nucléaire, F-91406 Orsay, France
⁴Centre d'Etudes Nucléaires de Bordeaux Gradignan (CENBG), UMR 5797 IN2P3/CNRS-Université Bordeaux, F-33170 Gradignan, France
⁵GANIL, BP55025, F-14076 Caen Cedex 5, France

^*Permanent address: Centre d'Etudes Nucléaires de Bordeaux Gradignan (CENBG), UMR 5797 IN2P3/CNRS-Université Bordeaux, F-33170 Gradignan, France; kurtukia@cenbg.in2p3.fr
^†Present address: KIT-INE, Hermann-von-Helmholtz-Platz 1, D-76344 Eggenstein-Leopoldshafen, Germany.
^‡Present address: Universidade de Vigo, E-36310 Vigo, Spain.
^§Present address: Los Alamos National Laboratory, Los Alamos, New Mexico 87544, USA.
^∥Present address: NSCL-MSU, 1 Cyclotron, East Lansing, Michigan 48824, USA.
^¶Present address: INRNE, 72 Tzarigradsko chausee, BG-1784 Sofia, Bulgaria.

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Issue

Vol. 89, Iss. 2 — February 2014

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Physical Review C

covering nuclear physics