Spectroscopy of neutron-unbound $^{27,28}$F

G. Christian; N. Frank; S. Ash; T. Baumann; P. A. DeYoung; J. E. Finck; A. Gade; G. F. Grinyer; B. Luther; M. Mosby; S. Mosby; J. K. Smith; J. Snyder; A. Spyrou; M. J. Strongman; M. Thoennessen; M. Warren; D. Weisshaar; A. Wersal

doi:10.1103/PhysRevC.85.034327

Spectroscopy of neutron-unbound $^{27,28}$F

Nuclear Experiment 2015-06-04 v1

Authors: G. Christian , N. Frank , S. Ash , T. Baumann , P. A. DeYoung , J. E. Finck , A. Gade , G. F. Grinyer , B. Luther , M. Mosby , S. Mosby , J. K. Smith , J. Snyder , A. Spyrou , M. J. Strongman , M. Thoennessen , M. Warren , D. Weisshaar , A. Wersal

View on arXiv ↗ PDF ↗ DOI ↗

Abstract

The ground state of $^{28}$ F has been observed as an unbound resonance $2\underline{2}0$ keV above the ground state of $^{27}$ F. Comparison of this result with USDA/USDB shell model predictions leads to the conclusion that the $^{28}$ F ground state is primarily dominated by $sd$ -shell configurations. Here we present a detailed report on the experiment in which the ground state resonance of $^{28}$ F was first observed. Additionally, we report the first observation of a neutron-unbound excited state in $^{27}$ F at an excitation energy of $25\underline{0}0 (2\underline{2}0)$ keV.

Keywords

neutron-unbound nuclei spectroscopy fluorine isotopes unbound resonance shell model sd-shell

Cite

@article{arxiv.1203.1369,
  title  = {Spectroscopy of neutron-unbound $^{27,28}$F},
  author = {G. Christian and N. Frank and S. Ash and T. Baumann and P. A. DeYoung and J. E. Finck and A. Gade and G. F. Grinyer and B. Luther and M. Mosby and S. Mosby and J. K. Smith and J. Snyder and A. Spyrou and M. J. Strongman and M. Thoennessen and M. Warren and D. Weisshaar and A. Wersal},
  journal= {arXiv preprint arXiv:1203.1369},
  year   = {2015}
}

Comments

10 pages, 11 figures, Accepted for publication in Phys. Rev. C

Spectroscopy of neutron-unbound $^{27,28}$F

Abstract

Keywords

Cite

Comments

Related papers