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Proton and Two-proton Emissions from Proton-rich Nuclei with 10≦Z≦20

林承键 徐新星 王建松 孙立杰 贾会明 杨磊 马朋 马军兵 杨彦云 金仕纶

林承键, 徐新星, 王建松, 孙立杰, 贾会明, 杨磊, 马朋, 马军兵, 杨彦云, 金仕纶, 等. Proton and Two-proton Emissions from Proton-rich Nuclei with 10≦Z≦20[J]. 原子核物理评论, 2016, 33(2): 160-166. doi: 10.11804/NuclPhysRev.33.02.160
引用本文: 林承键, 徐新星, 王建松, 孙立杰, 贾会明, 杨磊, 马朋, 马军兵, 杨彦云, 金仕纶, 等. Proton and Two-proton Emissions from Proton-rich Nuclei with 10≦Z≦20[J]. 原子核物理评论, 2016, 33(2): 160-166. doi: 10.11804/NuclPhysRev.33.02.160
LIN Chengjian, XU Xinxing, WANG Jiansong, SUN Lijie, JIA Huiming, YANG Lei, MA Peng, MA Junbing, YANG Yanyun, JIN Shilun, et al.. Proton and Two-proton Emissions from Proton-rich Nuclei with 10≦Z≦20[J]. Nuclear Physics Review, 2016, 33(2): 160-166. doi: 10.11804/NuclPhysRev.33.02.160
Citation: LIN Chengjian, XU Xinxing, WANG Jiansong, SUN Lijie, JIA Huiming, YANG Lei, MA Peng, MA Junbing, YANG Yanyun, JIN Shilun, et al.. Proton and Two-proton Emissions from Proton-rich Nuclei with 10≦Z≦20[J]. Nuclear Physics Review, 2016, 33(2): 160-166. doi: 10.11804/NuclPhysRev.33.02.160

Proton and Two-proton Emissions from Proton-rich Nuclei with 10≦Z≦20

doi: 10.11804/NuclPhysRev.33.02.160

Proton and Two-proton Emissions from Proton-rich Nuclei with 10≦Z≦20

  • 摘要: Proton (p) and two-proton (2p) emissions from the proton-rich nuclei with 10≦Z≦20 have been explored by the in-fight decay and implantation decay methods, respectively, in a series of experiments at the HIRFL-RIBLL facility. The in-flight 2p emissions from the excited states of 28,29S /26,27P and 17;18Ne were studied by complete-kinematics measurements. Mechanisms of 2p decay and related p-p correlations have been explored. Obvious 2p correlated emissions have been observed in the cases of 28,29S but not in 27,28P, indicating the 2p halo plays an important role in the diproton emission. In the 17;18Ne cases, a small 2p opening angles were deduced by the HBT analyses, implying the BCS-BEC crossover may occur in the dilute nuclear matter. Moreover, 27S/26P/25Si, 22Si/20Mg, 23Si/22Al/21Mg, 24Si/23Al, and 36;37Ca were implanted in a thin double-sided-silicon-strip detector and their -delayed p and 2p decays have been measured by a surrounding silicon detector array under the continuous-beam mode. Important information on the nuclear spectroscopy, such as energy, lifetime, branching-ratio, and so on, has been extracted, which helps us to understand the nuclear structures of proton-rich exotic nuclei close to the drip-line.
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  • 刊出日期:  2016-06-20

Proton and Two-proton Emissions from Proton-rich Nuclei with 10≦Z≦20

doi: 10.11804/NuclPhysRev.33.02.160

摘要: Proton (p) and two-proton (2p) emissions from the proton-rich nuclei with 10≦Z≦20 have been explored by the in-fight decay and implantation decay methods, respectively, in a series of experiments at the HIRFL-RIBLL facility. The in-flight 2p emissions from the excited states of 28,29S /26,27P and 17;18Ne were studied by complete-kinematics measurements. Mechanisms of 2p decay and related p-p correlations have been explored. Obvious 2p correlated emissions have been observed in the cases of 28,29S but not in 27,28P, indicating the 2p halo plays an important role in the diproton emission. In the 17;18Ne cases, a small 2p opening angles were deduced by the HBT analyses, implying the BCS-BEC crossover may occur in the dilute nuclear matter. Moreover, 27S/26P/25Si, 22Si/20Mg, 23Si/22Al/21Mg, 24Si/23Al, and 36;37Ca were implanted in a thin double-sided-silicon-strip detector and their -delayed p and 2p decays have been measured by a surrounding silicon detector array under the continuous-beam mode. Important information on the nuclear spectroscopy, such as energy, lifetime, branching-ratio, and so on, has been extracted, which helps us to understand the nuclear structures of proton-rich exotic nuclei close to the drip-line.

English Abstract

林承键, 徐新星, 王建松, 孙立杰, 贾会明, 杨磊, 马朋, 马军兵, 杨彦云, 金仕纶, 等. Proton and Two-proton Emissions from Proton-rich Nuclei with 10≦Z≦20[J]. 原子核物理评论, 2016, 33(2): 160-166. doi: 10.11804/NuclPhysRev.33.02.160
引用本文: 林承键, 徐新星, 王建松, 孙立杰, 贾会明, 杨磊, 马朋, 马军兵, 杨彦云, 金仕纶, 等. Proton and Two-proton Emissions from Proton-rich Nuclei with 10≦Z≦20[J]. 原子核物理评论, 2016, 33(2): 160-166. doi: 10.11804/NuclPhysRev.33.02.160
LIN Chengjian, XU Xinxing, WANG Jiansong, SUN Lijie, JIA Huiming, YANG Lei, MA Peng, MA Junbing, YANG Yanyun, JIN Shilun, et al.. Proton and Two-proton Emissions from Proton-rich Nuclei with 10≦Z≦20[J]. Nuclear Physics Review, 2016, 33(2): 160-166. doi: 10.11804/NuclPhysRev.33.02.160
Citation: LIN Chengjian, XU Xinxing, WANG Jiansong, SUN Lijie, JIA Huiming, YANG Lei, MA Peng, MA Junbing, YANG Yanyun, JIN Shilun, et al.. Proton and Two-proton Emissions from Proton-rich Nuclei with 10≦Z≦20[J]. Nuclear Physics Review, 2016, 33(2): 160-166. doi: 10.11804/NuclPhysRev.33.02.160

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