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AIP Conf. Proc. / Volume 947 / Issue 1

TOF-B Mass Measurement of Neutron Rich Nuclei at the NSCL

AIP Conf. Proc. -- October 26, 2007 -- Volume 947, pp. 383-386
VII LATIN AMERICAN SYMPOSIUM ON NUCLEAR PHYSICS AND APPLICATIONS; doi:10.1063/1.2813835

Issue Date: 26 October 2007

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ABSTRACT

Alfredo Estradé,^a,b Milan Matoš,^a,c Matthew A. Amthor,^a,b Daniel Bazin,^a Ana D. Becerril,^a,b Thom J. Elliot,^a,b Alexandra Gade,^a Daniel Galaviz,^a,c Giuseppe Lorusso,^a,b Jorge Pereira,^a,c Mauricio Portillo,^a Andrew Rogers,^a,b Hendrik Schatz,^a,b Dan Shapira,^d Edward Smith,^e Andreas Stolz,^a and Mark S. Wallace^f
^aNational Superconducting Cyclotron Laboratory, Michigan State University, East Lansing, MI, USA
^bDepartment of Physics and Astronomy & Joint Institute for Nuclear Astrophysics, Michigan State University East Lansing, MI, USA
^cJoint Institute for Nuclear Astrophysics, Michigan State University, East Lansing, MI, USA
^dPhysics Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee, USA
^eDepartment of Physics, The Ohio State University, Columbus, OH, USA
^fLos Alamos National Laboratory Los Alamos, NM, USA

Experimentalknowledge of nuclear masses of exotic nuclei is important forunderstanding nuclear structure far from the valley of beta

-stability, andas a direct input into astrophysical models. In the caseof astrophysical processes involving neutron rich nuclei, such as nucleosynthesisduring the r-process and the evolution of matter in thecrust of an accreting neutron star, we are mostly limitedto using theoretical mass models. The time of flight (TOF)mass measurement technique allows measuring very short-lived nuclei. It hasbeen effectively applied using the fast fragment beams produced atthe A1900 fragment separator at the National Superconducting Cyclotron Lab(NSCL) to reach masses very far from stability. We describea recent mass measurement experiment in the neutron rich Feregion performed at the NSCL, and present preliminary results. ©2007 American Institute of Physics

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