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Chinese Physics C> 2000, Vol. 24> Issue(11) : 1060-1065 

Non-reproducibility of the Cross Sections Measured in the Dissipative Collisions of 19F+93Nb

  •  Institute of Modern Physics, The Chinese Academy of Sciences, Lanzhou 730000, China2 China Institute of Atomic Energy, Beijing 102413, China

  • Two independent measurements of excitation functions for the 19F+93Nb dissipative heavy ion collisions have been performed at incident energies from 100 to 108 MeV in steps of 250 keV. The two measurements differed by two target foils, 70 and 71μg/cm2, respectively. All the other experimental conditions were kept to be identical in hath experiments. The data indicate nonreptaludbility of the non-self-averaging oscillating yields in the two measurements. This supports recent theoretical predictions of extreme sensitivity and chaos in complex quantum collisions.
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    [1] De Rosa A et al. Phys. Lett., 1985, B160:239; Suomijarvi T et al. Phys. Rev., 1987, C36: 181; Pappalardo G. Nucl. Phys., 1988, A488:395c; Rizzo F et al. Z. Phys., 1994, A349: 169; Wang Qi et al. Phys. Lett., 1996, B388:462; Berceanu I et al. Phys. Rev., 1998, C57:2359; Papa M et al. Phys. Rev., 2000, C61:0446142 Guhr T et al. Phys. Rep., 1998, 299: 189 3 Bohigas O et al. Ann. Rev. Nucl. Part. Sci., 1988, 38:421 4 Ericson T. Ann Phys., 1963, 23:3905 Kun S Y et al. Z. Phys., 1994, A348:273; 1997, A357:255,271; 1997, A359: 137, 145,257,263; Nucl. Phys.,1995, A583:275c; J. Phys., 1997, G23: 1359; Phys. Rev. Lett., 2000, 84:423 6 Richter A. in Nuclear Spectroscopy and Reactions. edited by Cemy J, New York: Academic Press, 1974, 343

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WANG Qi, TIAN WenDong, LI SongLin, JIANG ZhongHe, LI ZhiChang, LU XiuQin, ZHAO Kui, FU ChangBo, LIU JianCheng, JIANG Hua and HU GuiQing. Non-reproducibility of the Cross Sections Measured in the Dissipative Collisions of 19F+93Nb[J]. Chinese Physics C, 2000, 24(11): 1060-1065.
WANG Qi, TIAN WenDong, LI SongLin, JIANG ZhongHe, LI ZhiChang, LU XiuQin, ZHAO Kui, FU ChangBo, LIU JianCheng, JIANG Hua and HU GuiQing. Non-reproducibility of the Cross Sections Measured in the Dissipative Collisions of 19F+93Nb[J]. Chinese Physics C, 2000, 24(11): 1060-1065. shu
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Received: 2000-06-02
Revised: 1900-01-01
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Non-reproducibility of the Cross Sections Measured in the Dissipative Collisions of 19F+93Nb

    Corresponding author: WANG Qi,
  • Institute of Modern Physics, The Chinese Academy of Sciences, Lanzhou 730000, China2 China Institute of Atomic Energy, Beijing 102413, China
  • Received Date: 2000-06-02
  • Accepted Date: 1900-01-01
  • Available Online: 2000-11-05

Abstract: Two independent measurements of excitation functions for the 19F+93Nb dissipative heavy ion collisions have been performed at incident energies from 100 to 108 MeV in steps of 250 keV. The two measurements differed by two target foils, 70 and 71μg/cm2, respectively. All the other experimental conditions were kept to be identical in hath experiments. The data indicate nonreptaludbility of the non-self-averaging oscillating yields in the two measurements. This supports recent theoretical predictions of extreme sensitivity and chaos in complex quantum collisions.

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