Chinese Physics C > 1983, Vol. 7 > Issue(1): 86-94

THE MEASUREMENT OF LIGHT PARTICLE EMISSION FROM¹²C+¹⁵⁹Tb, Ag AND⁸⁹Y REACTIONS

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Abstract：
The energy spectra and angular distributions of α-particle emitted from ¹²C-induced reactions with ¹⁵⁹Tb, Ag and ⁸⁹Y targets have been measured. Meanwhile the emitted deutron's angular distributions with ¹⁵⁹Tb and ⁸⁹Y targets and proton's with ⁸⁹Y target have been also obtained.
The α-energy spectra associated with mentioned reactions have bell-like shape with probable energy near coulomb barrier. However, the main characteristic of the α-angular distribution for ¹⁵⁹Tb and Ag targets is peaked at or near the grazing angles. For the case of ⁸⁹Y target, α-differential cross-sections monotonically decrease with angles beyond 40º. The angular distributions of potons and deutrons nearly decrease exponentially.
The measured α-angular distributions could be divided into two components, one coming from α-evaporation is isotropic, another is anisotropic. The anisotropic component may be explained incomplete-fusion process in which the cross-section can be reproduced by a "Sum-Rule Model" due to J.Wliczynski.
In order to explain the anisotropic component of emitted α-particle, we propose in complete fusion model with a strong-damped sticking rotation, in which the rotation angles and interaction time of the composite system are also estimated.

References

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DAI Guang-Xi, JIN Gen-Ming, YUAN Shuang-Gui, GUO Zhong-Yan, ZENG Wen-Bing, CHEN Ju-Sheng, LI Zu-Yu, WANG Da-Yan and XU Guo-Jun. THE MEASUREMENT OF LIGHT PARTICLE EMISSION FROM ¹²C+ ¹⁵⁹Tb, Ag AND ⁸⁹Y REACTIONS[J]. Chinese Physics C, 1983, 7(1): 86-94.

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Received: 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

THE MEASUREMENT OF LIGHT PARTICLE EMISSION FROM¹²C+¹⁵⁹Tb, Ag AND⁸⁹Y REACTIONS

Corresponding author:DAI Guang-Xi,

Received Date:1900-01-01

Accepted Date:1900-01-01

Available Online:1983-02-05

Abstract:The energy spectra and angular distributions of α-particle emitted from¹²C-induced reactions with¹⁵⁹Tb, Ag and⁸⁹Y targets have been measured. Meanwhile the emitted deutron's angular distributions with¹⁵⁹Tb and⁸⁹Y targets and proton's with⁸⁹Y target have been also obtained.
The α-energy spectra associated with mentioned reactions have bell-like shape with probable energy near coulomb barrier. However, the main characteristic of the α-angular distribution for¹⁵⁹Tb and Ag targets is peaked at or near the grazing angles. For the case of⁸⁹Y target, α-differential cross-sections monotonically decrease with angles beyond 40º. The angular distributions of potons and deutrons nearly decrease exponentially.
The measured α-angular distributions could be divided into two components, one coming from α-evaporation is isotropic, another is anisotropic. The anisotropic component may be explained incomplete-fusion process in which the cross-section can be reproduced by a "Sum-Rule Model" due to J.Wliczynski.
In order to explain the anisotropic component of emitted α-particle, we propose in complete fusion model with a strong-damped sticking rotation, in which the rotation angles and interaction time of the composite system are also estimated.

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THE MEASUREMENT OF LIGHT PARTICLE EMISSION FROM¹²C+¹⁵⁹Tb, Ag AND⁸⁹Y REACTIONS

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