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Chinese Physics C> 1995, Vol. 19> Issue(11) : 991-997 

Target Residues from the Interaction of Copper with 40MeV/u 40Ar Ions

  •  Institute of Modern Physics,The Chines Academy of Sciences,Lanzhou 7300002 Institute of Nuclear Research,The Chines Academy of Sciences,Shanghai 201800The institute of Physical and Chemical Research RIKEN,Wako,Saitama 351-01

  • Cross Sections and average forward recoil range FW were measured for target residues from the interaction of Cu with 40MeV/u 40Ar ions using off-line y-ray spectroscopy.The mass yield distribution was obtained with assumption of charge distribution.The linear momentum transfer was calculated from FW values.A comparison with similar results of 12C+Cu and 20Ne+Cu reactions indicates that the fractional linear momentum transfer,corresponding to central collisions,decreases with increasing projectile mass at the same energy per nucleon. However,the excitation energy of the composite system created from the collisions of Cu with 40Ar ions reached the value of 5.3MeV /u and was higher than those from the collisions with 12C and 20Ne ions.
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    [1] T.Lund et al,Z Phys,A306（1982）43.[2] S.Y.Cho,Y.H.Chang,N.T.Porile et al,Phys.Rev,C36（1987）2347.[3] S.Y.Cho,N.T.Porile,D.J.Morrissey,Phys.Rev,C39（1989）2227.[4] 李文新、孙彤玉、戚大海等，高能物理与核物理，14（1990）745.[5] L.Pichkowski,J.Jastrzebski,W.Kurcewicz et al,Phys.Rev,C43（1991）1331.[6] 孙彩玉、李文新等，核化学与放射化学，15（1993）65.[7] J.P.Whitfield,N.T.Porile,Phys.Rev,C47（1993）1636.[8] 孙彤玉、李文新、吴定清等，核化学与放射化学，16（1994）109.[9] 吴定清、李文新、孙彤玉等，核化学与放射化学，17（1995）73.[10] H.Baba,T.sekine,S.Baba et al,Japsn Atomic Energy Research Institute Report JAERI,（1972）1227.[11] 李文新、孙彤玉，原子能科学技术，24（1990）60.[12] U,Reus,W.Westemeies,At Deta Nucl.Deta Tables,29（1983）2.[13] Li Wenxin Proc.Second IN2P3-RIKEN Symposium on Heavy Ion Collision,Obernai,France,April,1990,p.263.[14] E.Tomasi et al,Proc.Second Int.Confon Nucleus-Nucleus Collision,V.I,p.60.[15] G.S.F.Stephans et al,Phys.Lett,161B（1985）60.

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Yin Xinmin, Li Wenxin, Zhang Xiang, Sun Tongyu, Shizuko Ambe, Yoshitaka Ohkubo, Masako Iwamoto, Yoshio Kobayashi and Fumitoshi Ambe. Target Residues from the Interaction of Copper with 40MeV/u 40Ar Ions[J]. Chinese Physics C, 1995, 19(11): 991-997.
Yin Xinmin, Li Wenxin, Zhang Xiang, Sun Tongyu, Shizuko Ambe, Yoshitaka Ohkubo, Masako Iwamoto, Yoshio Kobayashi and Fumitoshi Ambe. Target Residues from the Interaction of Copper with 40MeV/u 40Ar Ions[J]. Chinese Physics C, 1995, 19(11): 991-997. shu
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Received: 1900-01-01
Revised: 1900-01-01
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Target Residues from the Interaction of Copper with 40MeV/u 40Ar Ions

    Corresponding author: Yin Xinmin,
  • Institute of Modern Physics,The Chines Academy of Sciences,Lanzhou 7300002 Institute of Nuclear Research,The Chines Academy of Sciences,Shanghai 201800The institute of Physical and Chemical Research RIKEN,Wako,Saitama 351-01
  • Received Date: 1900-01-01
  • Accepted Date: 1900-01-01
  • Available Online: 1995-11-15

Abstract: Cross Sections and average forward recoil range FW were measured for target residues from the interaction of Cu with 40MeV/u 40Ar ions using off-line y-ray spectroscopy.The mass yield distribution was obtained with assumption of charge distribution.The linear momentum transfer was calculated from FW values.A comparison with similar results of 12C+Cu and 20Ne+Cu reactions indicates that the fractional linear momentum transfer,corresponding to central collisions,decreases with increasing projectile mass at the same energy per nucleon. However,the excitation energy of the composite system created from the collisions of Cu with 40Ar ions reached the value of 5.3MeV /u and was higher than those from the collisions with 12C and 20Ne ions.

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