A. Lefebvre-Schuhl

Hydrogen burning of O-17 in classical novae

We report on the observation of a previously unknown resonance at E{sub R}{sup lab}=194.1{+-}0.6 keV in the {sup 17}O(p,{alpha}){sup 14}N reaction, with a measured resonance strength {omega}{gamma}{sub p{alpha}}=1.6{+-}0.2 meV. We studied in the same experiment the {sup 17}O(p,{gamma}){sup 18}F reaction by an activation method and the resonance-strength ratio was found to be {omega}{gamma}{sub p{alpha}}/{omega}{gamma}{sub p{gamma}}=470{+-}50. The corresponding excitation energy in the {sup 18}F compound nucleus was determined to be 5789.8{+-}0.3 keV by {gamma}-ray measurements using the {sup 14}N({alpha},{gamma}){sup 18}F reaction. These new resonance properties have important consequences for {sup 17}O nucleosynthesis and {gamma}-ray astronomy of classical novae.

Indirect study of the C 13 ( α , n ) O 16 reaction via the C 13 ( Li 7 , t ) O 17 transfer reaction

The

An above-barrier narrow resonance in 15F

^{13}mathrm{C}

Indirect study of 19Ne states near the F18+p threshold

(

Indirect study of 12C(α,γ)16O reaction

ensuremath{alpha},n

SPECTROSCOPY OF THE UNBOUND NUCLEUS (18)Na

)

Indirect study of the 13C(alpha,n)16O reaction via the 13C(7Li,t)17O transfer reaction

^{16}mathrm{O}

Indirect Study of 13C(α,n)16O

reaction is considered the main neutron source for the s process in low mass asymptotic giant branch (AGB) stars. In the Gamow peak, the cross section sensitively depends on the

Indirect study of 19Ne states near the threshold

1/{2}^{+}

Experimental Study of 17O(p,α)14N and 17O(p,γ)18F for Classical Nova Nucleosynthesis

subthreshold state of