An Implantation and Detection System for Spectroscopy of 22,24Si |
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| Authors: | SUN Lijie XU Xinxing LIN Chengjian WANG Jiansong FANG Deqing LI Zhihuan WANG Yuting LI Jing YANG Lei MA Nanru WANG Kang ZANG Hongliang |
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| Affiliation: | 1.China Institute of Atomic Energy, Beijing 102413, China;2.Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China;3.Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 201800, China;4.School of Physic and State Key Laboratory of Nuclear Physics and Technology,Peking University, Beijing 100871, China |
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| Abstract: | A new decay detection system with high detection efficiency and low detection threshold has been developed for charged-particle decay studies, including -delayed proton, decay or direct proton emission from proton-rich nuclei. The detection system was tested by using the -delayed proton emitter 24Si and was commissioned in the decay study of 22Si produced by projectile fragmentation at the First Radioactive Ion Beam Line in Lanzhou. Under a continuous-beam mode, the isotopes of interest were implanted into two double-sided silicon strip detectors, where the subsequent decays were measured and correlated to the preceding implantations by using position and time information. The system allows to measure protons with energies down to about 200 keV without obvious background in the proton spectrum. Further application of the detection system can be extended to the measurements of -delayed proton decay and the direct proton emission of other exotic proton-rich nuclei. |
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| Keywords: | β-delayed proton decay direct proton decay double-sided silicon strip detector continuousbeam mode implantation-decay correlation |
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