Constraining the ³⁴Cl(p,γ)³⁵Ar reaction rate for ONe nova nucleosynthesis with the the ³⁴Cl(d,p)³⁵Cl mirror reaction

Thermonuclear reaction rates for the ³⁴Cl(p,γ)³⁵Ar reaction are largely undetermined due to the lack of experimental nuclear physics data at the Nova temperature. The uncertainties in this reaction rate affect the production of ³⁴S in the models of oxygen-neon (ONe) white dwarfs. Current nova models treat the ³⁴Cl(p,γ)³⁵Ar reaction without separately considering the isomeric state ³⁴Cl (E_x=0.146 MeV, T_1/2 = 31.99(3) min, J^π = 3+) and ground state (T_1/2 = 1.53 s, J^π = 0+). We measured the mirror reaction ³⁴Cl(d,p)³⁵Cl at 10 MeV/u with the HELIOS spectrometer at Argonne’s ATLAS facility using two distinct isomer-to-ground state ratios in the ³⁴Cl beam. In this talk, I’ll present preliminary results on contributions from low-lying proton resonant states in ³⁵Cl, originating from the ground and isomeric states in ³⁴Cl.