Beta-delayed proton emission of the drip-line nucleus <sup>73</sup>Rb
ORAL
Abstract
Nuclei near the drip lines play a key role in our understanding of astrophysics, weak-interaction physics, and nuclear structure. Weakly-bound or unbound nuclei at the rp-process waiting points, such as the nucleus 73Rb, are important for constraining properties of type I X-ray bursts. To probe the extent by which 73Rb is proton unbound and thereby constrain the reaction flow out of the 72Kr waiting point, we have performed an implant-decay experiment designed to measure β-delayed protons from states in 73Rb fed in the decay of 73Sr. The experiment was conducted at NSCL where a 92Mo primary beam was used to access neutron-deficient isotopes. Nuclei were identified and implanted into a silicon DSSD surrounded by a HPGe array. The secondary beam was purified with the RF Fragment Separator, enabling the detection and correlation of 73Rb β-delayed protons. Details of the experimental setup and decay results will be presented.
*This material is based upon work supported by the U.S. DOE, Office of Science, Office of Nuclear Physics under Award No. DE-FG02-94ER40848, DE-FG02-88ER40387 and DE-AC02-06CH11357; the NNSA through the Nuclear Science and Security Consortium under Award No. DE-NA0003180, DE-NA0003221, DE-NA0002132 and DE-NA0000979; and the NSF under Contract No. PHY-1102511.
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Presenters
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Andrew M Rogers
- Univ of Mass - Lowell
- UMass Lowell
- University of Massachusetts, Lowell