论文标题
质子诱导的Deuteron敲除反应作为核中等质子质子中子对的探针
Proton induced deuteron knockout reaction as a probe of an isoscalar proton-neutron pair in nuclei
论文作者
论文摘要
Isoscalar $ pn $对有望在具有相似质子和中子数的核中出现，但没有明确的实验证据。我们的目的是阐明多体计算中的$ pn $配对强度与质子诱导的Deuteron敲除（$ p，pd $）的三重差分横截面（TDX）之间的对应关系。相对于$^{16} $ O的中心，Isoscalar $ pn $对的径向波函数是用能量密度函数（EDF）方法来计算的，并在扭曲的波浪脉冲近似（DWIA）框架中实现。 EDF计算中的$ PN $配对强度$ V_0 $变化，并且研究了TDX中的相应变化。对于$^{16} $ o（$ p，pd $）$^{14} $ n（$ 1_2^+$）的$^{16} $ o（$ p，pd $），在$ 101.3 $ meV中找到了$^{16} $ o（$ p，pd $）的明显$ v_0 $依赖性。发现核失真使$ v_0 $依赖性更强。由于具有清晰的$ v_0 $ -tdx通信，因此（$ p，pd $）反应将是对Isoscalar $ pn $ paiple的有前途的探针。为了进行定量讨论，需要进一步修改反应过程的描述。
The isoscalar $pn$ pair is expected to emerge in nuclei having the similar proton and neutron numbers but there is no clear experimental evidence for it. We aim to clarify the correspondence between the $pn$ pairing strength in many-body calculation and the triple differential cross section (TDX) of proton-induced deuteron knockout ($p,pd$) reaction on $^{16}$O. The radial wave function of the isoscalar $pn$ pair with respect to the center of $^{16}$O is calculated with the energy density functional (EDF) approach and is implemented in the distorted wave impulse approximation (DWIA) framework. The $pn$ pairing strength $V_0$ in the EDF calculation is varied and the corresponding change in the TDX is investigated. A clear $V_0$ dependence of the TDX is found for the $^{16}$O($p,pd$)$^{14}$N($1_2^+$) at $101.3$ MeV. The nuclear distortion is found to make the $V_0$ dependence stronger. Because of the clear $V_0$-TDX correspondence, the ($p,pd$) reaction will be a promising probe for the isoscalar $pn$ pair in nuclei. For quantitative discussion, further modification of the description of the reaction process will be necessary.
