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Volume 35 Issue 4
May  2020
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WANG Youbao, SU Jun, HAN Zhiyu, TANG Bing, CUI Baoqun, GE Tao, LÜ Yinlong, CHEN Zhiqiang, GUO Bing, LI Xinyue, LI Yunju, LI Zhihong, LIAN Gang, MA Tianli, MA Yingjun, SHEN Yangping, SU Yi, WANG Chunguang, WU Hongyi, YAN Shengquan, ZENG Sheng, ZHENG Yun, ZHOU Chao, DANG Yongle, FU Guangyong, HE Yangfan, LIU Fulong, WU Di, ZHANG Tianjue, LIU Weiping, BRIF collaboration. Study of the Exotic Decay Mode of 20Na with an Intense ISOL Beam[J]. Nuclear Physics Review, 2018, 35(4): 445-449. doi: 10.11804/NuclPhysRev.35.04.445
Citation: WANG Youbao, SU Jun, HAN Zhiyu, TANG Bing, CUI Baoqun, GE Tao, LÜ Yinlong, CHEN Zhiqiang, GUO Bing, LI Xinyue, LI Yunju, LI Zhihong, LIAN Gang, MA Tianli, MA Yingjun, SHEN Yangping, SU Yi, WANG Chunguang, WU Hongyi, YAN Shengquan, ZENG Sheng, ZHENG Yun, ZHOU Chao, DANG Yongle, FU Guangyong, HE Yangfan, LIU Fulong, WU Di, ZHANG Tianjue, LIU Weiping, BRIF collaboration. Study of the Exotic Decay Mode of 20Na with an Intense ISOL Beam[J]. Nuclear Physics Review, 2018, 35(4): 445-449. doi: 10.11804/NuclPhysRev.35.04.445

Study of the Exotic Decay Mode of 20Na with an Intense ISOL Beam

doi: 10.11804/NuclPhysRev.35.04.445
Funds:  Natural Science Foundation of China (11875322, 11327508); National Key Research and Development Program of China(2016YFA0400502)
  • Received Date: 2018-09-15
  • Rev Recd Date: 2018-11-10
  • Publish Date: 2020-05-03
  • Beijing Radioactive Ion-beam Facility(BRIF) has been commissioned as the national Radioactive Ion Beam(RIB) facility based on the Isotope Separator On Line(ISOL) technique since 2016. At BRIF, the radioactive nuclides are produced by the proton beam of 100 MeV bombarding a thick-target, the reaction products diffusing out of the target are ionized by an ion source and delivered to the online mass separator. In addition to the post-accelerated radioactive ion beams, BRIF can provide low-energy ISOL beams of 100 to 300 keV with a mass resolution of 20 000. A general-purpose decay station has been built including the ISOL beam transport line, a conventional reaction chamber, charge-particle and γ detectors with integrated electronics and data acquisition system. An intense 20Na ISOL beam up to 1×105 pps was produced by using the 100 MeV proton beam bombarding a MgO thick target. With high-efficiency measurements of β, γ and α simultaneously, very rare β-γ-α decay mode in 20Na has been directly observed for the first time in the present work.
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Study of the Exotic Decay Mode of 20Na with an Intense ISOL Beam

doi: 10.11804/NuclPhysRev.35.04.445
Funds:  Natural Science Foundation of China (11875322, 11327508); National Key Research and Development Program of China(2016YFA0400502)

Abstract: Beijing Radioactive Ion-beam Facility(BRIF) has been commissioned as the national Radioactive Ion Beam(RIB) facility based on the Isotope Separator On Line(ISOL) technique since 2016. At BRIF, the radioactive nuclides are produced by the proton beam of 100 MeV bombarding a thick-target, the reaction products diffusing out of the target are ionized by an ion source and delivered to the online mass separator. In addition to the post-accelerated radioactive ion beams, BRIF can provide low-energy ISOL beams of 100 to 300 keV with a mass resolution of 20 000. A general-purpose decay station has been built including the ISOL beam transport line, a conventional reaction chamber, charge-particle and γ detectors with integrated electronics and data acquisition system. An intense 20Na ISOL beam up to 1×105 pps was produced by using the 100 MeV proton beam bombarding a MgO thick target. With high-efficiency measurements of β, γ and α simultaneously, very rare β-γ-α decay mode in 20Na has been directly observed for the first time in the present work.

WANG Youbao, SU Jun, HAN Zhiyu, TANG Bing, CUI Baoqun, GE Tao, LÜ Yinlong, CHEN Zhiqiang, GUO Bing, LI Xinyue, LI Yunju, LI Zhihong, LIAN Gang, MA Tianli, MA Yingjun, SHEN Yangping, SU Yi, WANG Chunguang, WU Hongyi, YAN Shengquan, ZENG Sheng, ZHENG Yun, ZHOU Chao, DANG Yongle, FU Guangyong, HE Yangfan, LIU Fulong, WU Di, ZHANG Tianjue, LIU Weiping, BRIF collaboration. Study of the Exotic Decay Mode of 20Na with an Intense ISOL Beam[J]. Nuclear Physics Review, 2018, 35(4): 445-449. doi: 10.11804/NuclPhysRev.35.04.445
Citation: WANG Youbao, SU Jun, HAN Zhiyu, TANG Bing, CUI Baoqun, GE Tao, LÜ Yinlong, CHEN Zhiqiang, GUO Bing, LI Xinyue, LI Yunju, LI Zhihong, LIAN Gang, MA Tianli, MA Yingjun, SHEN Yangping, SU Yi, WANG Chunguang, WU Hongyi, YAN Shengquan, ZENG Sheng, ZHENG Yun, ZHOU Chao, DANG Yongle, FU Guangyong, HE Yangfan, LIU Fulong, WU Di, ZHANG Tianjue, LIU Weiping, BRIF collaboration. Study of the Exotic Decay Mode of 20Na with an Intense ISOL Beam[J]. Nuclear Physics Review, 2018, 35(4): 445-449. doi: 10.11804/NuclPhysRev.35.04.445
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