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arXiv 1206.0617nucl-thastro-ph.CO
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利用线偏振光子在天体物理能量下的排列氘核的光致蜕变

Photodisintegration of aligned deuterons at astrophysical energies using linearly polarized photons

G. Ramachandran, Swarnamala Sirsi, S. P. Shilpashree

摘要:

模型独立的方法,以氘核光衰变与线性偏振$γ-$射线,我们表明,测量的张量分析功率对齐氘核沿微分截面涉及五个不同的线性组合的isovector $E1^j_v; j=0,1,2$振幅干扰的isoscope $M1_s$和$E2_s$振幅。鉴于最近的实验发现\cite{blackston1},即三个$E1^j_v$振幅是不同的,以及关于微分截面中的前后(极角)不对称性的报告的实验观察\cite{sawatzky},这是当前感兴趣的。

英文摘要:

Following the model independent approach to deuteron photodisintegration with linearly polarized $γ-$rays, we show that the measurements of the tensor analyzing powers on aligned deuterons along with the differential cross section involve five different linear combinations of the isovector $E1^j_v; j=0,1,2$ amplitudes interfering with the isoscalar $M1_s$ and $E2_s$ amplitudes. This is of current interest in view of the recent experimental finding \cite{blackston1} that the three $E1^j_v$ amplitudes are distinct and also the reported experimental observation \cite{sawatzky} on the front-back (polar angle) asymmetry in the differential cross section.

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