Abstract The projected angular distribution and transverse momentum distribution of proton projectile fragments produced in 3.7A GeV 16O, 500A MeV 56Fe, and 1.7A GeV 84Kr induced different kinds of emulsion targets (H, CNO, and AgBr) interactions are investigated. It is found that the projected angular distribution and transverse momentum distribution can be well represented by a single Gaussian distribution. Comparison of transverse momentum distribution with the Maxwell-Boltzmann distribution reveals that proton projectile fragments are emitted from a single-temperature emission source. The temperature is different for different colliding systems, and linearly depends on the target size.
(Atomic, molecular, ion, and heavy-particle collisions)
Fund: Project supported by the National Natural Science Foundation of China (Grant No. 11075100) and Shanxi Scholarship Council of China (Grant No. 2011-058).
Zhang Dong-Hai (张东海), Li Jun-Sheng (李俊生), Li Hui-Ling (李惠玲 ) Single source emission of proton projectile fragments in nucleus-emulsion interactions 2012 Chin. Phys. B 21 110501
[1]
Bowman J D, Swiatecki W J and Tsang C F 1973 Lawrence Berkeley Laboratory Report LBL-2908
[2]
Westfall G D, Gosset J, Johansen P J, Poskanzer A M, Meyer W G, Gutbrod H H, Sandoval A and Stock R 1976 Phys. Rev. Lett. 18 1202
[3]
Raha S, Weiner R M and Wheeler J W 1984 Phys. Rev. Lett. 53 138
[4]
Aggarwal M M, Bhalla K B, Das G and Jain P L 1983 Phys. Rev. C 27 640
[5]
Song F, Zhang D H and Li J S 2005 Chin. Phys. 14 942
[6]
Kamel S 1999 Nuovo Cim. A 112 733
[7]
Ghosh D, Roy J and Sengupta R 1988 J. Phys. G 14 711
[8]
Bhalla K B, Chaudhry M, Lokanathan S, Grover R K, Daftari I K, Kaul G L, Magotra L K, Prakash Y, Rao N K, Garpman S and Otterlund I 1981 Nucl. Phys. A 367 446
[9]
Baumgardt H G, Friedlander E M and Schopper E 1981 J. Phys. G 7 L175
[10]
Joseph R R, Ojha I D, Tuli S K, Bhatia V S, Kaur M, Mittra I S, Sahota S S, Bhalla K B, Bharti A, Mookerjee S, Kitroo S and Rao N K 1989 J. Phys. G 15 1805
[11]
Ghosh D, Roy J and Ghosh K 1990 Nuovo Cim. A 103 423
[12]
Ghosh D, Das S K and Ghosh K 1997 Nuovo Cim. A 110 565
[13]
El-Nadi M, Abdelsaiam A, Hussien A, Shaat E A, Ali Moussa N, Abou Moussa Z, Kamel S, Abdel-Waged Kh, El Falaky E and Fayed M 1997 Rad. Meas. 28 231
[14]
Barrette J, Bellwied R, Braun-Munzinger P, et al. 1992 Phys. Rev. C 45 819
[15]
Abbott T, Akiba Y, Beavis D, et al. 1991 Phys. Rev. Lett. 66 1567
[16]
Singh G and Jain P L 1992 Z. Phys. A 334 73
[17]
Kamel S 1999 Nuovo Cim. A 112 327
[18]
Zhang D H, Cheng J X, Cheng B, Wang F, Wang Q, Zhang H Q, Xu R, Jia H M and Li X Q 2009 Chin. Phys. B 18 531
[19]
Li H L and Zhang D H 2009 Chin. J. Phys. 47 27
[20]
Sfienti C, Adrich P, Aumann T, et al. 2009 Phys. Rev. Lett. 102 152701
Intermittency in 3.7 A GeV 16O-emulsion interactions Zhang Dong-Hai(张东海), Zhao Hui-Hua(赵惠华), Liu Fang(刘芳), He Chun-Le(何春乐), Jia Hui-Ming(贾会明), Li Xue-Qin(李雪琴), Li Zhen-Yu(李振宇), and Li Jun-Sheng(李俊生). Chin. Phys. B, 2007, 16(9): 2689-2700.
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