A new $\alpha$-cluster linear chain is theoretically investigated in ${}^{16}$C. By using the antisymmetrized molecular dynamics, we show that a $(1/2_{\sigma }^{-}{)}^2(1/2_{\sigma }^{+}{)}^2$ linear-chain configuration exists with extreme deformation. It is compared with a 27.2 MeV state observed by a recent cluster-decay experiment $^{2}{\rm H}(^{16}{\rm C}, ^{4}{\rm He}+^{12}{\rm Be}$ or $^{6}{\rm He}+^{10}{\rm Be})^{2}{\rm H}$. We show that a decay pattern of this new linear-chain configuration, it dominantly decays into $^{6}{\rm He}+^{10}{\rm Be}(0^+_2)$ channel, is in good agreement with the observed data.

中文翻译：

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16C中的纯σ键线性链

一个新的 $\alpha$集群线性链理论研究 ${}^{16}$C.通过使用反对称分子动力学，我们表明 $（\mathrm{1个}/2_{\sigma }^{-}{）}^2（\mathrm{1个}/2_{\sigma }^{+}{）}^2$线性链构型极易变形。将其与最近的簇衰变实验$ ^ {2} {\ rm H}（^ {16} {\ rm C}，^ {4} {\ rm He} + ^ {12 } {\ rm Be} $或$ ^ {6} {\ rm He} + ^ {10} {\ rm Be}）^ {2} {\ rm H} $。我们表明，这种新的线性链配置的衰减模式主要衰减到$ ^ {6} {\ rm He} + ^ {10} {\ rm Be}（0 ^ + _ 2）$通道，与观察到的数据一致。