NIC-XIV School 2016

Lfitetime measurements to constrain the 30P(p,g)31S rate at classical nova temperatures

15 Jun 2016, 16:00

10m

Library Hall, Central Library (Niigata University (Ikarashi Campus))

Short Talk Students2

Speaker

Cathleen Fry (MSU/NSCL)

Description

In classical novae, the 30P(p,g)31S reaction potentially acts as a bottleneck in nucleosynthesis flow to higher masses. Knowledge of this reaction rate is necessary for the modeling of elemental and isotopic ratios in classical novae, which affect proposed nova thermometers and presolar grain identification, respectively. While most of the resonance energies are known experimentally, the corresponding resonance strengths are not yet known. As a step towards determining experimental resonance strengths, an experiment to measure the lifetimes of these resonances, using the Doppler Shift Lifetime (DSL) setup at TRIUMF, is scheduled in late May. A measurement of the lifetimes of these states will provide the total widths of these resonances, and can be used along with the spins and proton branching ratios to determine resonance strengths.