Cortina-Gil D, Fernandez-Vazquez J, Aumann T, Baumann T, Benlliure J, Borge M J G, Chulkov L V, Datta Pramanik U, Forssén C, Fraile L M, Geissel H, Gerl J, Hammache F, Itahashi K, Janik R, Jonson B, Mandal S, Markenroth K, Meister M, Mocko M, Münzenberg G, Ohtsubo T, Ozawa A, Prezado Y, Pribora V, Riisager K, Scheit H, Schneider R, Schrieder G, Simon H, Sitar B, Stolz A, Strmen P, Sümmerer K, Szarka I, Weick H
Universidad de Santiago de Compostela, E-15706, Spain.
Phys Rev Lett. 2004 Aug 6;93(6):062501. doi: 10.1103/PhysRevLett.93.062501.
Breakup reactions were used to study the ground-state configuration of the neutron-rich isotope 23O. The 22O fragments produced in one-nucleon removal from 23O at 938 MeV/nucleon in a carbon target were detected in coincidence with deexciting gamma rays. The widths of the longitudinal momentum distributions of the 22O fragments and the one-neutron removal cross sections were interpreted in the framework of a simple theoretical model which favors the assignment of Ipi = 1/2+ to the 23O ground state.
通过破裂反应研究了富中子同位素(^{23}O)的基态构型。在碳靶中，以(938)兆电子伏特每核子的能量从(^{23}O)中移除一个核子时产生的(^{22}O)碎片，与退激伽马射线符合探测。在一个简单理论模型的框架内解释了(^{22}O)碎片纵向动量分布的宽度和单中子移除截面，该模型支持将(I^{\pi}=1/2^{+})指定给(^{23}O)基态。
