出版社：SISSA, Scuola Internazionale Superiore di Studi Avanzati
摘要：The cold CNO cycle is the primary energy source for main sequence hydrogen burning in intermediate
to heavy mass stars (M >1.5 M ). The 19F(p,g ) reaction provides the only breakout path
during quiescent hydrogen burning, and the cyclic nature of the process enhances small breakout
components. The sign of the interference components provided the largest uncertainty in
the reaction rate since no measurements had been sufficiently sensitive to measure the reaction
off-resonance. A new detection technique developed at the University of Notre Dame allowed a
measurement of the 19F(p,g ) and 19F(p,aig ) reactions over an energy range of Ep=200-800 keV.
This allowed a new measurement of the resonance parameters as well as a first measurement of
the signs of the interference terms. Partial widths and resonance strengths are reported for the
resonances in this region.
