论文标题
与中等能力梁的耗散反应 - 一种在稀有同位素中填充复合结构状态的新方法
Dissipative reactions with intermediate-energy beams -- a novel approach to populate complex-structure states in rare isotopes
论文作者
论文摘要
据报道，在稀有同位体中形成多粒子 - 孔孔（NP-MH）激发态的新途径是从高能量和动量触发性的非弹性分散事件中，在BE靶标38CA的中间能束的反应中测得的。在9BE（38CA，38CA+Gamma）X反应中，观察到38CA中的负值，复杂结构的最终状态，其中散射的弹丸失去了p = 700 MEV/c的纵向动量。讨论了观察到的最终状态的特征，并发现与涉及单个高度能量弹丸 - 靶标碰撞中多个核子重排的激发态的形成一致。与稀有同位素的梁上γ射线光谱法相比，这些更充满活力的碰撞似乎通常会利用巨大的爆发反应，这些碰撞的碰撞似乎为核结构研究提供了一种实用的途径，用于对稀有同位素中更复杂的多形构型的核结构研究 - 最终被认为是在常规上被认为是与高效应相互作用的最终状态，即最终状态不受欢迎。
A novel pathway for the formation of multi-particle-multi-hole (np-mh) excited states in rare isotopes is reported from highly energy- and momentum-dissipative inelastic-scattering events measured in reactions of an intermediate-energy beam of 38Ca on a Be target. The negative-parity,complex-structure final states in 38Ca were observed following the in-beam gamma-ray spectroscopy of events in the 9Be(38Ca,38Ca+gamma)X reaction in which the scattered projectile lost longitudinal momentum of order p = 700 MeV/c. The characteristics of the observed final states are discussed and found to be consistent with the formation of excited states involving the rearrangement of multiple nucleons in a single, highly-energetic projectile-target collision. Unlike the far-less dissipative, surface-grazing reactions usually exploited for the in-beam gamma-ray spectroscopy of rare isotopes, these more energetic collisions appear to offer a practical pathway to nuclear-structure studies of more complex multi-particle configurations in rare isotopes - final states conventionally thought to be out of reach with high-luminosity fast-beam-induced reactions.
