Structure and Decay Correlations of Two-Neutron Systems Beyond the Dripline

Authors

Z. Kohley, Michigan State UniversityFollow
T. Baumann, Michigan State UniversityFollow
D. Bazin, Michigan State UniversityFollow
G. Christian, Michigan State UniversityFollow
P. A. De Young, Hope College
J. E. Finck, Central Michigan UniversityFollow
R. A. Haring-Kaye, Ohio Wesleyan UniversityFollow
J. Hinnefeld, Indiana University - South BendFollow
N. Frank, Augustana College - Rock IslandFollow
E. Lunderberg, Hope CollegeFollow
B. Luther, Concordia College - MoorheadFollow
S. Mosby, Michigan State UniversityFollow
W. A. Peters, Michigan State University
J. K. Smith, Michigan State UniversityFollow
J. Snyder, Michigan State UniversityFollow
Sharon L. Stephenson, Gettysburg CollegeFollow
M. J. Strongman, Michigan State University
A. Spyrou, Michigan State UniversityFollow
M. Thoennessen, Michigan State UniversityFollow
A. Volya, Florida State UniversityFollow

Document Type

Article

Publication Date

5-2014

Department 1

Physics

Abstract

The two-neutron unbound systems of 16Be, 13Li, 10He, and 26O have been measured using the Modular Neutron Array (MoNA) and 4 Tm Sweeper magnet setup. The correlations of the 3-body decay for the 16Be and 13Li were extracted and demonstrated a strong correlated enhancement between the two neutrons. The measurement of the 10He ground state resonance from a 14Be(−2p2n) reaction provided insight into previous predictions that wavefunction of the entrance channel, projectile, can influence the observed decay energy spectrum for the unbound system. Lastly, the decay-in-target (DiT) technique was utilized to extract the lifetime of the 26O ground state. The measured lifetime of 4.5+1.1 −1.5 (stat.)±3(sys.) ps provides the first indication of two-neutron radioactivity.

Comments

This paper was presented at the 3rd International Workshop on "State of the Art in Nuclear Cluster Physics," May 26–30 2014, in Yokohama, Japan.

Published under licence in Journal of Physics: Conference Series by IOP Publishing Ltd.

Content from this work may be used under the terms of the Creative Commons Attribution 3.0 licence. Any further distribution of this work must maintain attribution to the author(s) and the title of the work, journal citation and DOI.

Copyright Note

This is the publisher's version of the work. This publication appears in Gettysburg College's institutional repository by permission of the copyright owner for personal use, not for redistribution.

DOI

10.1088/1742-6596/569/1/012033

Recommended Citation

Kohley, Z., et al. "Structure and Decay Correlations of Two-Neutron Systems Beyond the Dripline." Journal of Physics: Conference Series 569 (May 2014) Article No. 012033.

Required Publisher's Statement

The original version is available from the publisher at: http://iopscience.iop.org/1742-6596/569/1/012033