J. R. Newton

Measurement of {sup 17}O(p,gamma){sup 18}F between the narrow resonances at E{sub r}{sup lab}=193 and 519 keV

The {sup 17}O(p,gamma){sup 18}F reaction sensitively influences hydrogen burning nucleosynthesis in a number of stellar sites, including classical novae. These thermonuclear explosions, taking place in close binary star systems, produce peak temperatures in the range of T=100-400 MK. Recent results indicate that the thermonuclear rates for this reaction in this particular temperature range are dominated by the direct capture process. We report on the measurement of the {sup 17}O(p,gamma){sup 18}F cross section between the narrow resonances at E{sub r}{sup lab}=193 and 519 keV, where the S factor is expected to vary smoothly with energy. We extract the direct capture contribution from the total cross section and demonstrate that earlier data are inconsistent with our results.

Resonance strength in {sup 22}Ne(p,gamma){sup 23}Na from depth profiling in aluminum

A novel method for extracting absolute resonance strengths has been investigated. By implanting

Remeasurement of the 193 keV resonance in {sup 17}O(p,{alpha}){sup 14}N

^{22}\mathrm{Ne}

Ratio of germanium detector peak efficiencies at photon energies of 4.4 and 11.7 MeV: Experiment versus simulation

ions into a thick aluminum backing and simultaneously measuring the

Nuclear astrophysics studies at the LENA facility: The γ-ray detection system

^{22}\mathrm{Ne}

Gamow peak in thermonuclear reactions at high temperatures

+p

Remeasurement of the 193 keV resonance in O17(p,α)N14

and

Measurement of the e r c.m. = 138 keV resonance in the 23 Na(p, γ) 24 Mg reaction and the abundance of sodium in AGB stars

^{27}\mathrm{Al}