Experimental evidence for a natural parity state in Mg26 and its impact on the production of neutrons for the s process
Experimental evidence for a natural parity state in Mg26 and its impact on the production of neutrons for the s process
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Mg26 自然宇称状态的实验证据及其对 s 过程中子产生的影响
DOI：
10.1103/physrevc.76.025802
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发表时间：
2007
影响因子：
3.1
通讯作者：
C. Wrede
中科院分区：
文献类型：
--
作者：
C. Ugalde;A. Champagne;S. Daigle;C. Iliadis;R. Longland;J. Newton;E. Osenbaugh;J. Clark;C. Deibel;A. Parikh;P. Parker;C. Wrede
我们通过 {sup 22}Ne({sup 6}Li, d){sup 26}Mg 反应研究了 {sup 26}Mg 的自然宇称态。我们的方法显着提高了之前实验的能量分辨率，因此，我们报告了在 {sup 26}Mg 中观察到的自然宇称状态。根据已发表的γ射线衰变实验，提出了可能的自旋宇称分配。 {sup 22}Ne({alpha},{gamma}){sup 26}Mg 反应的恒星速率降低，并可能通过 {sup 22}Ne({alpha},n){sup 25}Mg 反应增加 s 过程中子的产生。
We have studied natural parity states in {sup 26}Mg via the {sup 22}Ne({sup 6}Li, d){sup 26}Mg reaction. Our method significantly improves the energy resolution of previous experiments and, as a result, we report the observation of a natural parity state in {sup 26}Mg. Possible spin-parity assignments are suggested on the basis of published {gamma}-ray decay experiments. The stellar rate of the {sup 22}Ne({alpha},{gamma}){sup 26}Mg reaction is reduced and may give rise to an increase in the production of s-process neutrons via the {sup 22}Ne({alpha},n){sup 25}Mg reaction.