• Rapid Communication

Observation of narrow states in nuclei beyond the proton drip line: F15 and Ne16

I. Mukha et al.
Phys. Rev. C 79, 061301(R) – Published 29 June 2009

Abstract

Two high-lying states in F15 and Ne16, unbound with respect to one-proton (1p) and two-proton (2p) emissions, have been observed in the fragmentation of Ne17 at intermediate energies. They undergo mainly sequential emissions of protons via intermediate states in O14 and F15 and have decay energies of 7.8(2) and 7.6(2) MeV, respectively. The widths of the newly observed states in F15 and Ne16 are much smaller than the Wigner limits for single-particle configurations, of 0.4(4) and 0.8(+84) MeV, respectively. In addition, narrow widths of 0.2(2) MeV are derived for two other high-lying states in F15 with Qp of 4.9 and 6.4 MeV, which match features of the recently predicted narrow odd-parity F15 states with two valence protons in the sd shell. All energies and widths have been obtained by analyzing angular correlations of the decay products, ppO14 and ppN13, whose trajectories have been measured by a tracking technique with silicon microstrip detectors.

  • Figure
  • Figure
  • Figure
  • Figure
  • Received 15 April 2009

DOI:https://doi.org/10.1103/PhysRevC.79.061301

©2009 American Physical Society

Authors & Affiliations

Click to Expand

Article Text (Subscription Required)

Click to Expand

References (Subscription Required)

Click to Expand
Issue

Vol. 79, Iss. 6 — June 2009

Reuse & Permissions
Access Options
Author publication services for translation and copyediting assistance advertisement

Authorization Required


×
×

Images

×

Sign up to receive regular email alerts from Physical Review C

Log In

Cancel
×

Search


Article Lookup

Paste a citation or DOI

Enter a citation
×