A research team at the Institute of Modern Physics (IMP) of the Chinese Academy of Sciences (CAS), together with international collaborators at Monash University and the Joint Institute for Nuclear Astrophysics, has computed a significantly revised proton capture reaction rate of arsenic-65 for the extreme astrophysical environments of accreting neutron stars, permitting astrophysicists to probe the mechanism of periodic thermonuclear X-ray bursts. This study has been published in The Astrophysical Journal.