EC/β+ Decay of <SUP>126</SUP>Ce

XIE Yuan-xiang; ）; XU Shu-wei; MA Fei; LI Zhan-kui; LIU Hong-liang

doi:10.11804/NuclPhysRev.29.02.145

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XIE Yuan-xiang, ）, XU Shu-wei, MA Fei, LI Zhan-kui, LIU Hong-liang. EC/β+ Decay of 126Ce[J]. Nuclear Physics Review, 2012, 29(2): 145-148. doi: 10.11804/NuclPhysRev.29.02.145

Citation:

XIE Yuan-xiang, ）, XU Shu-wei, MA Fei, LI Zhan-kui, LIU Hong-liang. EC/β+ Decay of ¹²⁶Ce[J]. Nuclear Physics Review, 2012, 29(2): 145-148. doi: 10.11804/NuclPhysRev.29.02.145

EC/β+ Decay of ¹²⁶Ce

doi: 10.11804/NuclPhysRev.29.02.145

1.
Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China;2.Department of Technical Physics, Peking University, Beijing 100087, China

Received Date: 1900-01-01
Rev Recd Date: 1900-01-01
Publish Date: 2012-06-20

Abstract

Ce was produced by bombarding an enriched target of ⁹²Mo with 187 MeV ⁴⁰Ca beam and studiedby using a heliumjet fast tape transport system in combination with X-γ and γ-γ coincidencemeasurements. An EC/β⁺ decay scheme of ¹²⁶Ce was proposed for the first time. A group of lowlying states associated with the lowspin isomer in ¹²⁶La feeding by β decay was possibly from the groundstate EC/β⁺decay of ¹²⁶Ce with the measured half-life 12(4) s. Another group of lowlying states associated with the highspin isomer in ¹²⁶La feeding by β decay was possibly from a highspin isomer EC/β⁺decay of ¹²⁶Ce with the measured half-life 57(9) s. However， the physical reason for the existence of a highspin isomer in even-even nucleus ¹²⁶Ce is still an open problem.
- EC/β+decay,
- heliumjet fast tape transport system,
- decay scheme,
- isomer
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通讯作者: 陈斌, bchen63@163.com

1.
沈阳化工大学材料科学与工程学院沈阳 110142

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EC/β+ Decay of ¹²⁶Ce

doi: 10.11804/NuclPhysRev.29.02.145

1. Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China;2.Department of Technical Physics, Peking University, Beijing 100087, China

Received Date: 1900-01-01
Rev Recd Date: 1900-01-01
Publish Date: 2012-06-20

Key words:

Abstract: Ce was produced by bombarding an enriched target of ⁹²Mo with 187 MeV ⁴⁰Ca beam and studiedby using a heliumjet fast tape transport system in combination with X-γ and γ-γ coincidencemeasurements. An EC/β⁺ decay scheme of ¹²⁶Ce was proposed for the first time. A group of lowlying states associated with the lowspin isomer in ¹²⁶La feeding by β decay was possibly from the groundstate EC/β⁺decay of ¹²⁶Ce with the measured half-life 12(4) s. Another group of lowlying states associated with the highspin isomer in ¹²⁶La feeding by β decay was possibly from a highspin isomer EC/β⁺decay of ¹²⁶Ce with the measured half-life 57(9) s. However， the physical reason for the existence of a highspin isomer in even-even nucleus ¹²⁶Ce is still an open problem.

XIE Yuan-xiang, ）, XU Shu-wei, MA Fei, LI Zhan-kui, LIU Hong-liang. EC/β+ Decay of 126Ce[J]. Nuclear Physics Review, 2012, 29(2): 145-148. doi: 10.11804/NuclPhysRev.29.02.145

Citation:

XIE Yuan-xiang, ）, XU Shu-wei, MA Fei, LI Zhan-kui, LIU Hong-liang. EC/β+ Decay of ¹²⁶Ce[J]. Nuclear Physics Review, 2012, 29(2): 145-148. doi: 10.11804/NuclPhysRev.29.02.145