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Structure of 33Mg sheds new light on the N = 20 island of inversion

机译: 33 Mg的结构为 N = 20 反演岛

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The first reaction spectroscopy on the ground state structure of33Mg through the measurement of the longitudinal momentum distribution from the one-neutron removal reaction using a C target at898AMeVis reported. The experiment was performed at the FRS, GSI. The distribution has a relatively narrow width (150±3MeV/c(FWHM)) and the one-neutron removal cross-section is74±4mb. An increased contribution from the2p3/2orbital is required to explain the observation showing its lowering compared to existing model predictions. This provides new information regarding the configuration of33Mg and the island of inversion.
机译:通过在898AMeVis上使用C靶标测量单中子去除反应产生的纵向动量分布,对33Mg基态结构进行了首次反应光谱分析。实验在FRS,GSI进行。该分布具有相对窄的宽度(150±3MeV / c(FWHM)),并且一个中子去除截面为74±4mb。需要2p3 / 2轨道增加的贡献来解释与现有模型预测相比其降低的观测结果。这提供了有关33 Mg的构型和反转岛的新信息。

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