Fission Measurement on 5.5 to 22 MeV/A <sup>28</sup>Si + <sup>197</sup>Au Systems (I) Linear Momentum Transfer and Angular Distribution off Reaction Plane

Dai Guangxi; Qi Yujin; Zheng Jiwen; Liu Ximing; Chen Yuanda; R. Stokstad; J. Pouliot; A. Harmon; D. Digregorio

Chinese Physics C> 1990, Vol. 14> Issue(S4) : 399-406

Fission Measurement on 5.5 to 22 MeV/A ²⁸Si + ¹⁹⁷Au Systems (I) Linear Momentum Transfer and Angular Distribution off Reaction Plane

1 Institute of Modem Physics, Chinese Academy of Sciences, Lanzhou, Gansu, China;
2 Lawrence Berkeley Laboratory, Berkeley, USA

Abstract
HTML
Reference
Related

PDF

Abstract：
The velocities and angular distributions of correlated fission fragments emitted from reaction of ¹⁹⁷Au bombarded by a ²⁸Si beam with energies from 5.5 to 21.7 MeV/A are measured. The results show that when the incident energy is larger than 10 MeV/A, the incomplete fusion-fission (ICF) associated with incomplete linear momentum transfer (LMT) appears. Furthermore, when E_cm > 200 MeV, as a companion of ICF, the sequential fission (SF) with lower LMT than that of ICF, has apparent yields. By comparing the difference of LMT values from ICF and SF, the ratio of SF over total fission cross-section has been obtained. Moreover, the angular distribution off the reaction plane of one fragment and its standard deviation have been obtained. It seems that there is a general linear relationship between the deviation and excitation energy per nucleon in heavier composite systems.

[1]	G.R. Boroun . Non-linear corrections to the derivative of nuclear reduced cross-section at small x at a future electron-ion collider. Chinese Physics C, 2026, 50(2): 1-10.
[2]	Xin Zhang , Yu Zhang , Xiaofeng Luo , Nu Xu . UrQMD Simulations of Higher-order Cumulants in Au+Au Collisions at High Baryon Density. Chinese Physics C, 2026, 50(2): 1-6. doi: 10.1088/1674-1137/ae0995
[3]	. Probing the cluster structure of ⁶Li with the ⁶Li + ¹²C nuclear reaction at 68 MeV. Chinese Physics C, 2026, 50(1): 014102. doi: 10.1088/1674-1137/ae072b
[4]	. Double-folding analysis of elastic and inelastic ³He-nucleus scattering at 60 MeV. Chinese Physics C, 2025, 49(11): 114101. doi: 10.1088/1674-1137/ade1cb
[5]	O. A. Rubtsova , V. N. Pomerantsev , L. D. Blokhintsev . Universal momentum distributions for the spin-singlet NN channels. Chinese Physics C, 2025, 49(10): 104104. doi: 10.1088/1674-1137/addaaf
[6]	Qi-Quan Li , Yu Zhang , Hoernisa Iminniyaz . Rotating and non-linear magnetic-charged black hole with an anisotropic matter field. Chinese Physics C, 2025, 49(10): 105106. doi: 10.1088/1674-1137/ade0a9
[7]	Zhuoyi Pang , Jian-Hui Zhang , Dian-Jun Zhao . Moments from momentum derivatives in lattice QCD. Chinese Physics C, 2025, 49(10): 101001. doi: 10.1088/1674-1137/aded04
[8]	Yi Wei Hao , Yi Fei Niu , Zhong Ming Niu . The Role of Fission in Mass Sensitivity Study of the r-process. Chinese Physics C, 2025, 49(): 1-7. doi: 10.1088/1674-1137/adfe55
[9]	Hanmei Cao , Fanglei Zou , Xiaojun Sun , Jingshang Zhang . Effects of energy levels on the double-differential cross sections of outgoing charged particles for the n+¹⁹F reaction below 20 MeV. Chinese Physics C, 2025, 49(12): 124107. doi: 10.1088/1674-1137/adf49f
[10]	Muhammad Farhan Taseer , Subhash Singha . Impact of particle production mechanisms on pseudorapidity distribution and directed flow in Au+Au and Cu+Cu collisions at ${ \sqrt{{\boldsymbol s}_{\boldsymbol{ NN}}}}$ = 19.6 GeV using AMPT model. Chinese Physics C, 2025, 49(10): 104101. doi: 10.1088/1674-1137/ade660
[11]	LIANG Jun , LIU Yan-Chun , ZHU Qiao . Thermodynamics of noncommutative geometry inspired black holes based on Maxwell-Boltzmann smeared mass distribution. Chinese Physics C, 2014, 38(2): 025101. doi: 10.1088/1674-1137/38/2/025101
[12]	YANG Hong-Xun (for the BESⅡ collaboration) . Partial wave analysis of J/ψ→ppπ⁰ and measurement of J/ψ→ppη, ppη´. Chinese Physics C, 2009, 33(12): 1331-1335. doi: 10.1088/1674-1137/33/12/048
[13]	YE Wei . Possible Dependence of Dissipation Strength on Angular Momentum. Chinese Physics C, 2006, 30(8): 759-760.
[14]	LIU Chang-Long , LU Yi-Ying , YIN LI . Effects of Additional Vacancy-Like Defects Produced by Ion Impealations on Boron Thermal Diffusion in Silicon. Chinese Physics C, 2005, 29(11): 1107-1111.
[15]	PENG Quan-Ling , SUN Jian , ZHAO Guang-Yuan , SHI Cai-Tu . Principle and Software Design of Helmhotz Coil Measurement System. Chinese Physics C, 2001, 25(9): 920-925.
[16]	Li Yangguo . Antiproton -Nucleus Charge Exchange Reaction and Inelastic Scattering. Chinese Physics C, 1996, 20(11): 1021-1027.
[17]	Yu Hong , Shen Qixing , Zhang Lin . Angular Distribution of Process e⁺e^－→τ⁺τ^－,τ^－→a₁υτ,a₁→ρπ and Characteristics of a₁ Meson. Chinese Physics C, 1994, 18(7): 583-590.
[18]	ZHU Xiang , SHEN Wen-Qing , HU Xiao-Qing , ZHU Yong-Tai , WANG Bing . A SIMPLE MODEL ANALYSIS OF THE INCOMPLETE DIC REACTION. Chinese Physics C, 1990, 14(9): 835-841.
[19]	WU Zhong-Li . ANALYSIS OF THE MOMENTUM DISTRIBUTION WIDTH OF THE PREOJECTILE-LIKE-FRAGMENT FROM HEAVY ION COLLISIONS. Chinese Physics C, 1989, 13(8): 752-754.
[20]	Dai Guangxi , Li Weisheng . Exploration of Optimum Shape in Symmetric Fission. Chinese Physics C, 1988, 12(S4): 399-404.

Access

Get Citation

Dai Guangxi, Qi Yujin, Zheng Jiwen, Liu Ximing, Chen Yuanda, R. Stokstad, J. Pouliot, A. Harmon and D. Digregorio. Fission Measurement on 5.5 to 22 MeV/A ²⁸Si + ¹⁹⁷Au Systems (I) Linear Momentum Transfer and Angular Distribution off Reaction Plane[J]. Chinese Physics C, 1990, 14(S4): 399-406.

RIS(for EndNote,Reference Manager,ProCite)

BibTex

Txt

Milestone

Received: 1989-05-29

Fund

Supported by the National Natural Science Foundation of China.

Article Metric

Article Views(1351)
PDF Downloads(3)
Cited by(0)

Policy on re-use

To reuse of subscription content published by CPC, the users need to request permission from CPC, unless the content was published under an Open Access license which automatically permits that type of reuse.

通讯作者: 陈斌, bchen63@163.com

1.
沈阳化工大学材料科学与工程学院沈阳 110142

Fission Measurement on 5.5 to 22 MeV/A ²⁸Si + ¹⁹⁷Au Systems (I) Linear Momentum Transfer and Angular Distribution off Reaction Plane

1 Institute of Modem Physics, Chinese Academy of Sciences, Lanzhou, Gansu, China;

2 Lawrence Berkeley Laboratory, Berkeley, USA

Received Date: 1989-05-29

Fund Project: Supported by the National Natural Science Foundation of China.

Abstract: The velocities and angular distributions of correlated fission fragments emitted from reaction of ¹⁹⁷Au bombarded by a ²⁸Si beam with energies from 5.5 to 21.7 MeV/A are measured. The results show that when the incident energy is larger than 10 MeV/A, the incomplete fusion-fission (ICF) associated with incomplete linear momentum transfer (LMT) appears. Furthermore, when E_cm > 200 MeV, as a companion of ICF, the sequential fission (SF) with lower LMT than that of ICF, has apparent yields. By comparing the difference of LMT values from ICF and SF, the ratio of SF over total fission cross-section has been obtained. Moreover, the angular distribution off the reaction plane of one fragment and its standard deviation have been obtained. It seems that there is a general linear relationship between the deviation and excitation energy per nucleon in heavier composite systems.

Fission Measurement on 5.5 to 22 MeV/A ²⁸Si + ¹⁹⁷Au Systems (I) Linear Momentum Transfer and Angular Distribution off Reaction Plane

Abstract：

Access

Article Metrics

Metrics

通讯作者: 陈斌, bchen63@163.com

Email This Article

Fission Measurement on 5.5 to 22 MeV/A ²⁸Si + ¹⁹⁷Au Systems (I) Linear Momentum Transfer and Angular Distribution off Reaction Plane

HTML

目录

Fission Measurement on 5.5 to 22 MeV/A 28Si + 197Au Systems (I) Linear Momentum Transfer and Angular Distribution off Reaction Plane

Abstract：

Access

Article Metrics

Metrics

通讯作者: 陈斌, bchen63@163.com

Email This Article

Fission Measurement on 5.5 to 22 MeV/A 28Si + 197Au Systems (I) Linear Momentum Transfer and Angular Distribution off Reaction Plane

HTML

目录

Fission Measurement on 5.5 to 22 MeV/A ²⁸Si + ¹⁹⁷Au Systems (I) Linear Momentum Transfer and Angular Distribution off Reaction Plane

Fission Measurement on 5.5 to 22 MeV/A ²⁸Si + ¹⁹⁷Au Systems (I) Linear Momentum Transfer and Angular Distribution off Reaction Plane