Chinese Physics C > 1999, Vol. 23 > Issue(3): 223-230

Comparison Between Hot Nuclei Temperature Values Deduced by Two Methods in⁴⁰Ar+¹⁵⁹Tb and^natAg Reactions at 30MeV/u

Institute of Modern Physics, The Chinese Academy of Sciences, Lanzhou 730000

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The temperature of hot nuclei was simultaneously deduced with double isotope ratios and with slope method at angle of 110°in ⁴⁰Ar+ ¹⁵⁹Tb and natAg reactions at 30 MeV/u. The values of isotopic temperature for different ratios, such as ^1,2H/ ^3,4He, ^2.3H/ ^3,4He and ^6,7Li/ ^3,4He were all the same, i.e. 4.6 MeV. The slope temperature values were different for various particles or complex fragmenL The slope temperature for α-particle or panicles with mass number less than 4 was normal,however, for the heavier fragments the slope temperatures were higher than limiting temperature T _lim.It may be expected because the heavier fragments were emitted at the early stage of the formation of compound nuclei or because of Coulomb instability.For larger slope temperature than T _limits angular dependence was tested too.

References

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Dai Guangxi, He Zhiyong, Fu Yanbiao, Duan Limin, Li Zuyu, Zhang Baoguo, Liu Guoxing and Wu Heyu. Comparison Between Hot Nuclei Temperature Values Deduced by Two Methods in ⁴⁰Ar+ ¹⁵⁹Tb and ^natAg Reactions at 30MeV/u[J]. Chinese Physics C, 1999, 23(3): 223-230.

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Received: 1997-12-09
Revised: 1900-01-01

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通讯作者:陈斌, bchen63@163.com

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沈阳化工大学材料科学与工程学院沈阳 110142

Comparison Between Hot Nuclei Temperature Values Deduced by Two Methods in⁴⁰Ar+¹⁵⁹Tb and^natAg Reactions at 30MeV/u

Corresponding author:Dai Guangxi,

Institute of Modern Physics, The Chinese Academy of Sciences, Lanzhou 730000

Received Date:1997-12-09

Accepted Date:1900-01-01

Available Online:1999-03-05

Abstract:The temperature of hot nuclei was simultaneously deduced with double isotope ratios and with slope method at angle of 110°in⁴⁰Ar+¹⁵⁹Tb and natAg reactions at 30 MeV/u. The values of isotopic temperature for different ratios, such as^1,2H/^3,4He,^2.3H/^3,4He and^6,7Li/^3,4He were all the same, i.e. 4.6 MeV. The slope temperature values were different for various particles or complex fragmenL The slope temperature for α-particle or panicles with mass number less than 4 was normal,however, for the heavier fragments the slope temperatures were higher than limiting temperature T_lim.It may be expected because the heavier fragments were emitted at the early stage of the formation of compound nuclei or because of Coulomb instability.For larger slope temperature than T_limits angular dependence was tested too.

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Comparison Between Hot Nuclei Temperature Values Deduced by Two Methods in⁴⁰Ar+¹⁵⁹Tb and^natAg Reactions at 30MeV/u

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