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基于çƒæ ¸é€€æ¿€çš„è·¯å¾„åˆ†æž å¯¹æ ¸è€—æ•£çš„ç ”ç©¶. 毛英臣 è¾½å®å¸ˆèŒƒå¤§å¦ç‰©ç†å¦é™¢. 2012 超é‡æ ¸åˆæˆä¸Žæ€§è´¨è®¨è®ºä¼š , å…°å·žå¤§å¦ , 2012 å¹´ 8 月. Outlines. YCMAO, 2012SHN, Lanzhou, 2012-08-11 — page 1. Introduction. Theoretical Models. Results and Discussions. Summary. Introduction – Heavy-ion Nuclear Reaction.
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基于热核退激的路径分析 对核耗散的研究 毛英臣 辽宁师范大学物理学院 2012超重核合成与性质讨论会, 兰州大学, 2012年8月
Outlines YCMAO, 2012SHN, Lanzhou, 2012-08-11 — page 1 Introduction Theoretical Models Results and Discussions Summary
Introduction – Heavy-ion Nuclear Reaction YCMAO, 2012SHN, Lanzhou, 2012-08-11 — page 2
Nuclear Dissipation YCMAO, 2012SHN, Lanzhou, 2012-08-11 — page 3 D. Hilscher, I.I. Gontchar and H. Rossner, Phys. Atom. Nucl. 57, 1353 (1994)
Theoretical results I One-Body Dissipation Theory + Wall and Window Formulism J. Blocki et al. YCMAO, 2012SHN, Lanzhou, 2012-08-11 — page 4 J. Blocki, et al., Ann. Phys.113, 330 (1978); H. Feldmeier, Rep. Prog. Phys.50, 915 (1987) J. R. Nix and A. J. Sierk, Proc. Of the 6th Adriatic Conference in Nuclure Physics: Frontiers of Heavy-Ion Physics, Dubrovnik, Yugoslavia (1987), edited by N. Cindro et al. (Singapore, World Scientific, 1990), p. 333. S. Palet al. Phys. Rev.C 63, 064603 (2001); ibids 63, 064603 (2001). G. Abal, et al., Nucl. Phys. A 683, 279 (2001).
Theoretical results II Quantal Transport Theory by H. Hofmann et al. Dissipative Diabatic Dynamicsby W. Nörenberg YCMAO, 2012SHN, Lanzhou, 2012-08-11 — page 5 H. Hofmann and P. J. Siemens, Nucl. Phys.A 257, 165 (1976); H. Hofmann, Phys. Rep.284, 137 (1997) ; H. Hofmann, The physics of warm nuclei: with analogies to mesoscopic systems, Oxford, OUP, 2008 W. Nörenberg, Nucl. Phys. A 409, 191c (1983).
TheoreticalModels The Combined Dynamical Statistical Model (CDSM model) YCMAO, 2012SHN, Lanzhou, 2012-08-11 — page 6 P. Fröbrich and I. I. Gontchar, Phys. Rep.292, 131 (1998). In overdamped condition，Langevin equation reads： P. Fröbrich, Nucl. Phys. A 787, 107c (2007)
Important parameters I Entropy: Temperature: Level density parameter (LDP): YCMAO, 2012SHN, Lanzhou, 2012-08-11 — page 7
Important parameters II YCMAO, 2012SHN, Lanzhou, 2012-08-11 — page 8 OBD nuclear dissipation parameter： N. Carjan I.I. Gontchar, L.A. Litnevsky, Z. Phys. A 359, 149 (1997) SPS nuclear dissipation parameter： P. Fröbrich, I.I. Gontchar, N.D. Litnevsky, N. Phys. A 556, 281 (1993)
Important parameters III YCMAO, 2012SHN, Lanzhou, 2012-08-11 — page 9 Coordinate Relationship of Nuclear Dissipation
Motive YCMAO, 2012SHN, Lanzhou, 2012-08-11 — page 10
MCDSM (Driving Potential) I YCMAO, 2012SHN, Lanzhou, 2012-08-11 — page 11 W. J. Swiatecki, Nucl. Phys. A 574, 233 (1994)
MCDSM (Driving Potential) II The Modified Combined Dynamical Statistical Model (MCDSM model) YCMAO, 2012SHN, Lanzhou, 2012-08-11 — page 12 • Potential V (q) R.W. Hasse, Ann. Phys. 68, 377 (1971) Y.C. Mao, and B.P. Gu, J. Phys.G 32, 2109 (06)
MCDSM (LDP) • LDP a (q) YCMAO, 2012SHN, Lanzhou, 2012-08-11 — page 13
Results and Disscusions YCMAO, 2012SHN, Lanzhou, 2012-08-11 — page 14 Y.C. Mao, and B.P. Gu, J. Phys.G 32, 2109 (06)
Pathwise Analysis Method I YCMAO, 2012SHN, Lanzhou, 2012-08-11 — page 15
Pathwise Analysis Method II 191,194,197,200,203Au YCMAO, 2012SHN, Lanzhou, 2012-08-11 — page 16
Pathwise Analysis Method III YCMAO, 2012SHN, Lanzhou, 2012-08-11 — page 17
Pathwise Analysis Method IV YCMAO, 2012SHN, Lanzhou, 2012-08-11 — page 18
Pathwise Analysis Method V YCMAO, 2012SHN, Lanzhou, 2012-08-11 — page 19
Summary The emission of prescission paritcle decends with increasing coordinate relationship of LDP. In order to ascertain the deformation and temperature relationship of nuclear dissipation, it is necessary to take other parameters into account in the synchronizing and self-consistent way. The emission of prescission paritcle is controled by the competition between the driving force (from the free energy) and the nuclear damping force (nuclear dissipation) in local deformation section. YCMAO, 2012SHN, Lanzhou, 2012-08-11 — page 20
