摘要The multiplicity distributions of projectile fragments emitted in interactions of different nuclei with emulsion are studied by using a multi-source model. Our calculated results show that the projectile fragments can be described by the model and each source contributes an exponential distribution. As the weighted sum of the folding result of many exponential distributions, a multi-component Erlang distribution is used to describe the experimental data. The relationship between the height (or width) of the distribution and the mass of the incident projectile, as well as the dependence of projectile fragments on target groups, are investigated too.
Abstract：The multiplicity distributions of projectile fragments emitted in interactions of different nuclei with emulsion are studied by using a multi-source model. Our calculated results show that the projectile fragments can be described by the model and each source contributes an exponential distribution. As the weighted sum of the folding result of many exponential distributions, a multi-component Erlang distribution is used to describe the experimental data. The relationship between the height (or width) of the distribution and the mass of the incident projectile, as well as the dependence of projectile fragments on target groups, are investigated too.
WANG Er-Qin;LIU Fu-Hu**;Magda A. Rahim;S. Fakhraddin;SUN Jian-Xin;
. Singly and Doubly Charged Projectile Fragments in Nucleus-Emulsion Collisions at Dubna Energy in the Framework of the Multi-Source Model[J]. 中国物理快报, 2011, 28(8): 82501-082501.
WANG Er-Qin, LIU Fu-Hu**, Magda A. Rahim, S. Fakhraddin, SUN Jian-Xin,
. Singly and Doubly Charged Projectile Fragments in Nucleus-Emulsion Collisions at Dubna Energy in the Framework of the Multi-Source Model. Chin. Phys. Lett., 2011, 28(8): 82501-082501.
[1] Webber W R, Kish J C, Rockstroh J M, Cassagnou Y, Legrain R, Soutoul A, Testard O and Tull C 1998 Astrophys J. 508 940
[2] Zeitlin C, Heilbronn L, Miller J, Rademacher S E, Borak T, Carter T R, Frankel K A, Schimmerling W and Stronach C E 1997 Phys. Rev. C 56 388
[3] Tsao C H, Silberberg R, Barghouty A F, Sihver L and Kanai T 1993 Phys. Rev. C 47 1257
[4] Sood A D and Puri R K 2004 Phys. Rev. C 70 034611
[5] Sher G, Shahzad M I and Rana M A 2009 Chin. Phys. Lett. 26 082502
[6] Tian J L, Li X, Yan S W, Wu X Z and Li Z X 2009 Chin. Phys. Lett. 26 082504
[7] Back B B et al (PHOBOS Collaboration) 2005 Nucl. Phys. A 757 28
[8] Li Q F, Li Z X, Soff S, Bleicher M and Stöcker H 2006 J. Phys. G 32 151
[9] Srivastava B K et al (EOS Collaboration) 2002 Phys. Rev. C 65 054617
[10] Gross D H E 1990 Rep. Prog. Phys. 53 605
[11] Bondorf J P, Botvina A S, Iljinov A S, Mishustin I N and Sneppen K 1995 Phys. Rep. 257 133
[12] Fakhraddin S and Rahim M A 2008 Phys. Scr. 78 015101
[13] Liu F H 2008 Nucl. Phys. A 810 159
[14] Liu F H and Li J S 2008 Phys. Rev. C 78 044602
[15] Liu F H, Lü Q W, Li B C and Bekmirzaev R 2011 Chin. J. Phys. 49 601
[16] Aggarwal M M, Bhalla K B, Das G and Jain P L 1983 Phys. Rev. C 27 640
[17] Bhalla K B et al (Jajpur-Jammu-Lund Collaboration) 1981 Nucl. Phys. A 367 446
[18] Baumgardt H G, Friedländer E M and Schopper E 1981 J. Phys. G 7 L175
[19] Ghosh D, Roy J and Sengupta R 1988 J. Phys. G 14 711
[20] Adamovich M I et al (EMU01 Collaboration) 1989 Phys. Rev. C 40 66
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