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Chinese Physics C> 2003, Vol. 27> Issue(4) : 309-312 

β-Delayed Proton Decay of 93Pd

  •  Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China2 Department of Technical Physics, Peking University, Beijing 100871, China

  • The β-‘waiting point’nucleus 93Pd has been produced via 58Ni(40Ca,3n2p) reaction. A helium-jet fast tape transport system was used in combination with p-γ coincidence measurement to identify the β-delayed proton precursor 93 Pd, whose half-life has been measured to be 1.3±0.2s. The measured energy spectrum of β-delayed protons and relative branching ratios to the final states in the daughter nucleus 92Ru are fitted by a revised statistic model calculation, and then the ground state spin of 93Pd are assigned to be 9/2. Meanwhile, a nuclear energy-potential-surface (EPS) calculation is performed by using the Woods-Saxon Strutinsky method. The calculated result supports the ground state spin and parity of 9/2+ assignment.
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    [1] . CHEN Y S .Nuclear Physics Review,2001,18(3):147(in Chinese)(陈永寿.原子核物理评论,2001,18(3):147)2. Schatz H ,Aprahmian A ,G rres J et al.Phys.Rep.,1998,294:167 3. Schmidt R ,Mazzocchi C ,Borcea R et al.Eur. Phy. J .,2000,A8:303 4. XU S W ,XIE Y X ,LI Z K et al.Phys.Rev.,1999,C60:061302(1—5) 5. XU S W ,LIZK ,XIE Y X et al.Eur.Phys.J,2001,A12:1 6. XU S W ,LIZK ,XIE Y X et al.Phys.Rev.,2001,C64:017301(1—2) 7. Nolte E ,Korschinek G ,Heim U .Z .Phys.,1980,A298:191 8. Herndle H ,Brown B A .Nucl.Phys.,1997,A627:35 9. M ller P ,Nix J R ,Kratz K L .At. Data Nucl.Data Tables,1997,66:131 10. Hornshфj P ,Wilsky K ,Hansen P G et al. Nucl. Phys.,1972,A187:609 11. Hardy J C .Phys.Lett.,1982,B109:242 12. Takahashi K ,Yamada M ,Kondoh T .At. Data Nucl. Data Tables,1973,12(1):101 13. Dilg W ,Schantl W ,Vonach H .Nucl.Phys.,1973,A217:269 14. Audi G ,Bersillon O ,Blachot J et al.Nucl.Phys.,1997,A624:1 15. Strutinsky V M .Nucl.Phys.,1967,A95:420 16. Nazarewicz W ,Dudek J , Bengtsson R et al. Nucl.Phys.,1985,A435:397

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WANG Xu-Dong, XU Shu-Wei, LI Zhan-Kui, XIE Yuan-Xiang, WU Zhe-Ying, XU Fu-Rong, GUO Bin, LENG Chang-Geng, WANG Chun-Fang and YU Yong. β-Delayed Proton Decay of 93Pd[J]. Chinese Physics C, 2003, 27(4): 309-312.
WANG Xu-Dong, XU Shu-Wei, LI Zhan-Kui, XIE Yuan-Xiang, WU Zhe-Ying, XU Fu-Rong, GUO Bin, LENG Chang-Geng, WANG Chun-Fang and YU Yong. β-Delayed Proton Decay of 93Pd[J]. Chinese Physics C, 2003, 27(4): 309-312. shu
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Received: 2002-05-15
Revised: 1900-01-01
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β-Delayed Proton Decay of 93Pd

    Corresponding author: WANG Xu-Dong,
  • Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China2 Department of Technical Physics, Peking University, Beijing 100871, China
  • Received Date: 2002-05-15
  • Accepted Date: 1900-01-01
  • Available Online: 2003-04-05

Abstract: The β-‘waiting point’nucleus 93Pd has been produced via 58Ni(40Ca,3n2p) reaction. A helium-jet fast tape transport system was used in combination with p-γ coincidence measurement to identify the β-delayed proton precursor 93 Pd, whose half-life has been measured to be 1.3±0.2s. The measured energy spectrum of β-delayed protons and relative branching ratios to the final states in the daughter nucleus 92Ru are fitted by a revised statistic model calculation, and then the ground state spin of 93Pd are assigned to be 9/2. Meanwhile, a nuclear energy-potential-surface (EPS) calculation is performed by using the Woods-Saxon Strutinsky method. The calculated result supports the ground state spin and parity of 9/2+ assignment.

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