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Chinese Physics C> 1998, Vol. 22> Issue(1) : 13-19 

Origins of the Forward Emission of Complex Fragments for 40Ar+159Tb Reaction at 30MeV/u

  •  Institute of Modern Physics, The Chinese Academy of Science, Lanzhou 730000

  • Light charged particles and complex fragments have been measured at forward angles in coincidence with two fission fragments for 40Ar+159Tb reaction at 25MeV/u. These three-body coincident events were sorted as a function of the impact parameter using linear momentum transfer and total transverse momenta methods. Equilibrium statistical emissions of complex fragments from quasi-target residues accompanied by non-equilibrium mid-rapidity components were found to dominate in central collisions, while projectile fragmentations were found to dominate in peripheral collision. Three components of complex-fragments from quasi-target, quasi-projectile and mid-rapidity soures were found in mid-central collision.
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    [1] Jiang Dongxing et al. Chinese Journal of Nucl. Phys., 1995, 17:223[2]I Qlan Xlng et al.. High Energy Phys. and Nuclear Phys. (in Chinese), 1996, 20:304P. [3]Pawlowski et al. Phys. Rev., 1996, C54: R10[4] D.R. Bowman et al. Phys. Rev. Lett., 1993, 70:3534[5] T. M.Hamilton et al. Phys. Rev., 1996, C53:2273[6] Li Zuyu et al. Nucl Inst. Meth., 1996, A373: 198[7] He Zhyong et al. Nucl. Phys., 1996, A598:248[8] J.Peter et al. Nucl. Phys., 1995, A593:95[9] J.C.Steckmeyer et al. Phys. Rev. Lett., 1996, 76:4895[10] G.Klotz -. Engmann et a]. Nucl. Phys., 1989, A499:392[11] F. Rami et al. Nucl. Phys., 1985, A444:325[12] RJCharity et al. Nucl. Phys., 1988, A476:516; 1988, A484:371[13] He Zhiyong et al. Nucl. Phys., 1997, A620:214[14] He Zhiyong et al. Acta Physica Sinica (in Chinese), 1997, 46: 1312(贺智勇等, 物理学报, 1997, 46: 1312)

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He Zhiyong, Li Zuyu, Duan Limin, Zhang Baoguo, Dai Guangxi, Jin Genming, Fu Yanbiao and Wang Hongwei. Origins of the Forward Emission of Complex Fragments for 40Ar+159Tb Reaction at 30MeV/u[J]. Chinese Physics C, 1998, 22(1): 13-19.
He Zhiyong, Li Zuyu, Duan Limin, Zhang Baoguo, Dai Guangxi, Jin Genming, Fu Yanbiao and Wang Hongwei. Origins of the Forward Emission of Complex Fragments for 40Ar+159Tb Reaction at 30MeV/u[J]. Chinese Physics C, 1998, 22(1): 13-19. shu
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Received: 1900-01-01
Revised: 1900-01-01
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Origins of the Forward Emission of Complex Fragments for 40Ar+159Tb Reaction at 30MeV/u

    Corresponding author: He Zhiyong,
  • Institute of Modern Physics, The Chinese Academy of Science, Lanzhou 730000
  • Received Date: 1900-01-01
  • Accepted Date: 1900-01-01
  • Available Online: 1998-01-05

Abstract: Light charged particles and complex fragments have been measured at forward angles in coincidence with two fission fragments for 40Ar+159Tb reaction at 25MeV/u. These three-body coincident events were sorted as a function of the impact parameter using linear momentum transfer and total transverse momenta methods. Equilibrium statistical emissions of complex fragments from quasi-target residues accompanied by non-equilibrium mid-rapidity components were found to dominate in central collisions, while projectile fragmentations were found to dominate in peripheral collision. Three components of complex-fragments from quasi-target, quasi-projectile and mid-rapidity soures were found in mid-central collision.

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