标题： 评论“15O(alpha,gamma)19Ne突破反应及其对X射线爆发的影响” 显示英文标题

标题： Comment on "15O(alpha,gamma)19Ne Breakout Reaction and Impact on X-Ray Bursts"

摘要： 最近发表的一封信报告了在低于4.5 MeV激发能的19Ne态中的alpha衰变测量。 测得的alpha衰变分支比B_alpha用于计算15O(alpha,gamma)19Ne反应的天体物理反应率，并得出关于吸积中子星上稳定状态和不稳定核燃烧之间转变的结论。 在这里，我指出计算的天体物理反应率是基于4.03 MeV态的B_alpha不可靠的值，并指出该信件在处理低统计量的alpha衰变测量时存在严重的内部不一致。 显示英文摘要

摘要： A recently published letter reports a measurement of alpha decay from states in 19Ne at excitation energies below 4.5 MeV. The measured alpha decay branching ratios B_alpha are used to calculate the astrophysical rate of the 15O(alpha,gamma)19Ne reaction and to draw conclusions regarding the transition between steady state and unstable nuclear burning on accreting neutron stars. Here I show that the calculated astrophysical reaction rate is based on an unreliable value of B_alpha for the 4.03 MeV state and point out a serious internal inconsistency in the letter's treatment of low statistics alpha decay measurements.