标题： ^{15}O 在 7556 keV 处的质子捕获共振态研究 显示英文标题

标题： Study of proton capture resonant state of ^{15}O at 7556 keV

摘要： 在CNO循环中14N(p, gamma)15O反应是速度最慢的反应，已在7556 keV处通过激发E^lab_p =278 keV (E^r_c.m.=259 keV)质子捕获共振态^{15}O进行了研究。 共振强度已从实验数据中确定。 利用多普勒位移衰减方法（DSAM）测定了Ex=6792 keV处亚阈值共振态以及5181 keV和6172 keV态的寿命。 通过使用大基组壳模型对核素^{15}O的结构特性，如能级能量、跃迁强度、能级寿命和谱学因子进行了理论计算，结果与目前及以往的实验数据相符。 显示英文摘要

摘要： The slowest reaction in the CNO cycle 14N(p, gamma)15O has been studied by populating the E^lab_p =278 keV (E^r_c.m.=259 keV) proton capture resonant state of ^{15}O at 7556 keV. The strength of the resonance has been determined from the experimental data. The level lifetime of the sub-threshold resonant state at Ex=6792 keV, as well as the lifetimes of the 5181 keV and 6172 keV states, have been measured using the Doppler shift attenuation method (DSAM). The structural properties of the nucleus ^{15}O, such as, the level energies, transition strengths, level lifetimes, and spectroscopic factors, have been calculated theoretically by using the large basis shell model, which agrees reasonably well with the present as well as the previous experimental data.