出版社：SISSA, Scuola Internazionale Superiore di Studi Avanzati
摘要：The nuclear structure of 19Ne near the proton threshold is of interest for understanding the rates
of proton-induced reactions on 18F in novae. Analogues for several states in the mirror nucleus
19F have not yet been identied in 19Ne indicating the level structure of 19Ne in this region is
incomplete. The 18F(d;n)19Ne and 18F(d; p)19F reactions have been measured simultaneously
at Ec:m: = 14.9 MeV. The experiments were performed at the Holield Radioactive Ion Beam
Facility (HRIBF) of Oak Ridge National Laboratory (ORNL) by bombarding a 720-mg/cm2 CD2
target with a radioactive 18F beam. The 19Ne states of interest near the proton threshold decay
by breakup into a and 15O particles. These decay products were detected in coincidence with
position-sensitive EDE silicon telescopes. The a and 15N particles from the break up of the
mirror nucleus 19F were also measured with these detectors. Particle identication, coincidence,
and Q-value requirements enable us to distinguish the reaction of interest from other reactions.
The reconstruction of relative energy of the detected particles reveals the excited states of 19Ne
and 19F which are populated. The neutron (proton) angular distributions for states in 19Ne (
19F) were extracted using momentum conservation. The observed states in 19Ne and 19F will be
presented.
