A Test of Sequential Decay of Hot Nuclei Around 3MeV/u Excitation Energy

Wu Heyu; Dai Guangxi

Chinese Physics C> 1994, Vol. 18> Issue(S1) : 5-12

A Test of Sequential Decay of Hot Nuclei Around 3MeV/u Excitation Energy

Wu Heyu ^, ,
Dai Guangxi

Institute of Modern Physics,Academia Sinica,Lanzhou 730000

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Abstract：
The decay properties of excited nuclei corresponding to about 3MeV/u excitation energy formed in incomplete fusion reactions ⁴⁰Ar(25MeV/u)+²⁰⁹Bi、¹⁹⁷Au、¹⁵⁹Tb are analysed.The sequential decay of nuclei by large fragments is identified using a minimization procedure of relative velocity difference with coulomb repulsion velocity.It is shown that three fragments originate from two successive independent binary splittings.This result is also supportted by the fact,that the experimental angular distribution of ternary fragments is nicely reproduced by sequential decay.

References

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Dai Guangxi et al., China. Jourl. Nucl. Phys., 15[2]Wu Heyu, Dai Guangxi et al., China. Jourl. Nucl.Phys., 15(1993) 185. 吴和宇、戴光曦，高能物理与核物理，17(1993)680,[3]吴和宇、戴光曦，高能物理与核物理，18(1994)729,[4]吴和宇、戴光曦，物理学报，43(1994)540,[5]A. Badala et al., XXVIII lnt. Meating on Nuclear physics, Bormio, (1990) 314.[6]M. Louvel et al，Proceedinys of Nikko workshop,Japan (1991).[7]G. Bizard D. Durand A. Genoax-Lubain Preprint (1993) 101.LPCC91一10 (submit to Physics Letters).[8]V. Viola et al., Phys Rev., C31 (1985) 1550.

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Wu Heyu and Dai Guangxi. A Test of Sequential Decay of Hot Nuclei Around 3MeV/u Excitation Energy[J]. Chinese Physics C, 1994, 18(S1): 5-12.

Wu Heyu and Dai Guangxi. A Test of Sequential Decay of Hot Nuclei Around 3MeV/u Excitation Energy[J]. Chinese Physics C, 1994, 18(S1): 5-12. shu

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Received: 1900-01-01
Revised: 1900-01-01

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