Indirect Study of the16O+16O Fusion Reaction Toward Stellar Energies by the Trojan Horse Method

Shinjiro Hayakawa ,I Indelicato,M La Cognata,N Burtebayev,A Trzcińska,S Romano,E Piasecki,P Figuera,S Kliczewski,C Spitaleri,A Urkinbayev,A Aimaganbetov,R Siudak,L Lamia ,S B Igamov ,G L Guardo ,G G Kiss ,M Fisichella ,М Латтуада ,S.b Sakuta ,G G Rapisarda ,А Туміно

doi:10.1051/epjconf/201611709013

Abstract

The 16 O+ 16 O fusion reaction is important in terms of the explosive oxygen burning process during late evolution stage of massive stars as well as understanding of the mechanism of low-energy heavy-ion fusion reactions. We aim to determine the excitation function for the most major exit channels, α + 28 Si and p + 31 P, toward stellar energies indirectly by the Trojan Horse Method via the 16 O( 20 Ne , α 28 Si) α and 16 O( 20 Ne , p 31 P) α three-body reactions. We report preliminary results involving reaction identification, and determination of the momentum distribution of α - 16 O intercluster motion in the projectile 20 Ne nucleus.

Highlights

To measure low-energy spectator α, while that at 50◦ was 35 mm focusing on higher energy up to 40 MeV of α of the coincidence pair
Each E layer consisted of a stack of four 1-mm-thick silicon detectors for high-energy proton up to 32 MeV
The first E layer was position-sensitive by charge division, and the distances from the target were typically 190 mm

Summary

Introduction

To measure low-energy spectator α, while that at 50◦ was 35 mm focusing on higher energy up to 40 MeV of α of the coincidence pair. Each E layer consisted of a stack of four 1-mm-thick silicon detectors for high-energy proton up to 32 MeV.

Objectives

Results

Conclusion