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2012,, 2012 8. Outlines YCMAO, 2012SHN, Lanzhou, 2012-08-11 page 1 Introduction Theoretical Models Results and Discussions Summary.

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Presentation on theme: "2012,, 2012 8. Outlines YCMAO, 2012SHN, Lanzhou, 2012-08-11 page 1 Introduction Theoretical Models Results and Discussions Summary."— Presentation transcript:

1 2012,,

2 Outlines YCMAO, 2012SHN, Lanzhou, page 1 Introduction Theoretical Models Results and Discussions Summary

3 Introduction – Heavy-ion Nuclear Reaction YCMAO, 2012SHN, Lanzhou, page 2

4 Nuclear Dissipation YCMAO, 2012SHN, Lanzhou, page 3 D. Hilscher, I.I. Gontchar and H. Rossner, Phys. Atom. Nucl. 57, 1353 (1994)

5 Theoretical results I YCMAO, 2012SHN, Lanzhou, 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 S. Pal et al. Phys. Rev. C 63, (2001); ibids 63, (2001). G. Abal, et al., Nucl. Phys. A 683, 279 (2001). One-Body Dissipation Theory + Wall and Window Formulism J. Blocki et al.

6 Theoretical results II YCMAO, 2012SHN, Lanzhou, 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). Dissipative Diabatic Dynamics by W. Nörenberg Quantal Transport Theory by H. Hofmann et al.

7 Theoretical Models YCMAO, 2012SHN, Lanzhou, page 6 The C ombined D ynamical S tatistical M odel (CDSM model) In overdamped condition Langevin equation reads In overdamped condition Langevin equation reads P. Fröbrich, Nucl. Phys. A 787, 107c (2007) P. Fröbrich and I. I. Gontchar, Phys. Rep. 292, 131 (1998).

8 Important parameters I YCMAO, 2012SHN, Lanzhou, page 7 Entropy: Temperature: Level density parameter (LDP):

9 Important parameters II YCMAO, 2012SHN, Lanzhou, page 8 OBD nuclear dissipation parameter 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) N. Carjan

10 Important parameters III YCMAO, 2012SHN, Lanzhou, page 9 Coordinate Relationship of Nuclear Dissipation

11 Motive YCMAO, 2012SHN, Lanzhou, page 10

12 MCDSM ( Driving Potential ) I YCMAO, 2012SHN, Lanzhou, page 11 W. J. Swiatecki, Nucl. Phys. A 574, 233 (1994)

13 MCDSM ( Driving Potential ) II YCMAO, 2012SHN, Lanzhou, page 12 The Modified C ombined D ynamical S tatistical M odel (MCDSM model) Potential V (q) R.W. Hasse, Ann. Phys. 68, 377 (1971) Y.C. Mao, and B.P. Gu, J. Phys.G 32, 2109 (06)

14 MCDSM ( LDP ) YCMAO, 2012SHN, Lanzhou, page 13 LDP a (q)

15 Results and Disscusions YCMAO, 2012SHN, Lanzhou, page 14 Y.C. Mao, and B.P. Gu, J. Phys.G 32, 2109 (06)

16 Pathwise Analysis Method I YCMAO, 2012SHN, Lanzhou, page 15

17 Pathwise Analysis Method II YCMAO, 2012SHN, Lanzhou, page ,194,197,200,203 Au

18 Pathwise Analysis Method III YCMAO, 2012SHN, Lanzhou, page 17

19 Pathwise Analysis Method IV YCMAO, 2012SHN, Lanzhou, page 18

20 Pathwise Analysis Method V YCMAO, 2012SHN, Lanzhou, page 19

21 Summary YCMAO, 2012SHN, Lanzhou, page 20 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.

22 Thank You!


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