Statistical significance of non-reproducibility of cross sections measured in dissipative reactions 19F+93Nb

NUCLEAR, HEAVY ION AND ATOMIC PHYSICS

Statistical significance of non-reproducibility of cross sections measured in dissipative reactions ¹⁹F+⁹³Nb

DONG Yu-Chuan，

WANG Qi，

LI Song-Lin，

TIAN Wen-Dong，

LI Zhi-Chang，

LU Xiu-Qin，

ZHAO Kui，

FU Chang-Bo，

LIU Jian-Cheng，

JIANG Hua，

HU Gui-Qing

Nuclear Science and Techniques

Vol.15, No.4

pp.193-199

Published in print 01 Aug 2004

CLC：O571.41+3,O571.6

33900

Two independent measurements of cross sections for the ¹⁹F+⁹³Nb dissipative heavy-ion collision (DHIC) have been performed at incident energies from 100 to 108 MeV in steps of 250 keV. Two independently prepared targets were used respectively with all other experimental conditions being identical in both experiments. The data indicate non-reproducibility of the non-self-averaging oscillation yields in the two measurements. The statistical analysis of this non-reproducibility supports recent theoretical predictions of spontaneous coherence, slow phase randomization and extreme sensitivity in highly excited quantum many-body systems.

DHICNon-reproducibilityProbability distributionNuclear reaction cross sectionExcitation function

References

[1]

De Rosa A, Inglima G, Russo V et al. Phys Lett, 1985, B160: 239

[2]

Suomijarvi T, Berthier B, Lucas R et al. Phys Rev, 1987, C36: 181

[3]

Pappalardo G. Nucl Phys, 1988, A483: 395c

[4]

Wang Qi, Li Songlin, Lu Jun et al. Chin Phys Lett, 1993, 10: 656

[5]

Rizzo F, Cardella G, De Rosa A et al. Z Phys, 1994, A349: 169

[6]

Wang Qi, Lu Jun, Xu Hushan et al. Phys Lett, 1996, B388: 462

[7]

Berceanu I, Andronic A, Duma M et al. Phys Rev, 1998, C57: 2359

[8]

Papa M, Amorini F, Cardella G et al. Phys Rev, 2000, C61: 044614

[9]

Wang Qi, Tian Wendong, Li Songlin et al. High Energy Phys Nucl Phys (in Chinese), 2000, 24: 1060

[10]

Ericson T. Ann Phys, 1963, 23: 390

[11]

Guhr T, Müller-Groeling A, Weidenmüller H A. Phys Rep, 1998, 299: 189, and references therein.

[12]

Brink D M, Dietrich K Z. Z Phys, 1987, A326: 7

[13]

Kun S Y. Phys Lett, 1991, B257: 247

[14]

Kun S Y, Norenberg W. Z Phys, 1992, A343: 215

[15]

Pappalardo G, Papa M. in Proceedings of the workshop on mulsistep direct reaction, NAC, FAURE S A, 1991, Lemmer R H (ed.), Singapore: World Scientific, 1992: 89

[16]

Kun S Y. Z Phys, 1997, A357: 255

[17]

Kun S Y. Z Phys, 1997, A357: 271

[18]

Kun S Y. Z Phys, 1997, A357: 367

[19]

Richter A. in Nuclear spectroscopy and reactions, Cemy J (ed.), Part B, New York and London: Academic Press, 1974: 343

[20]

Kun S Y. Phys Rev Lett, 2000, 84: 423

[21]

Wigner E. in Statistical properties of nuclei, Garg J B (ed.) New York-London: Plenum Press, 1972: 621, 622, 635, 636