ANGULAR DISTRIBUTIONS OF FISSION FRAGMENTS AND THE SHAPES OF THE SADDLE POINT OF COMPOUND NUCLEI

LIU GOU-XING; WANG ZJO-GOU; YIN SHU-ZHI; HAO BIN-GAN; YUAN SHUANG-GUI; XIA XING-SHUO

Chinese Physics C> 1978, Vol. 2> Issue(3) : 242-248

ANGULAR DISTRIBUTIONS OF FISSION FRAGMENTS AND THE SHAPES OF THE SADDLE POINT OF COMPOUND NUCLEI

Abstract
HTML
Reference
Related

PDF

Abstract：
We have measured the angular distributions of fission fragments for a series of compound nuclei formed in the bombardment of ¹⁶⁹Tm, ¹⁷⁵Lu, ¹⁸¹Ta, ¹⁹⁷Au, ²⁰⁹Bi, ²³²Th and ²³⁸U by 78 MeV ¹²C ions and in the bombardment of natural lead by 96.6, 92.2, 88.1, 79.0 and 75.6 MeV ¹⁴N ions with mica track detectors. All the measured angular distributions can be fitted by the theoretical formula given by Halpern and Strutinski. The effective moments of inertia of the fissioning nuclei at the saddle point are derived from the angular distribution anisotropies. A comparison is made for the shapes of experimental saddle point with the theoretical predictions by the liquid drop model.

References

[1]

I. Halpern and V. M. Strutinski, "Preceedinga of the Second United Nations International Conference on the Peaceful Uses of Atomic Energy”，15, 408.[2] J. R. Huizenga et al., Phys. Rev., 126(1962), 220.[3] R. .F. Reising et al., Phys. Rev., 141(1966), 1161.[4] К. Г. Кyватов и др., я#8706;ер Фцэ, 14 (1971), 79.[5] C. A. Карaмян идр., я#8706;ер Фцэ, 6 (1967), 494.[6] B. M. Cтpyтинский, я#8706;ер Фцэ, 1 (1965), 821.[7] 核物理研究室，高能物理与核物理，1, (1977), 65.[8] R. vandenbosch and J. R. Huizenga "Nuclear Fission", 199.[9] S. Conhen and W. J. Swiatecki, Ann. Phys., 22(I963), 406.

[1]	SONG Yu-Shou , LUO Wei , TANG Li-Guang , HU Bi-Tao . The Application of Fission Fragments Chamber in Direct Measurement of Heavy Λ Hypernucear Lifetime. Chinese Physics C, 2007, 31(8): 755-759.
[2]	WANG Kun , MA Yu-Gang , CAI Xiang-Zhou , CHEN Jin-Gen , FANG De-Qing , GUO Wei , LIU Gui-Hua , MA Chun-Wang , MA Er-Jun , SHEN Wen-Qing , SU Qian-Min , SHI Yu , TIAN We , . Isoscaling of the Fission Fragments in Langevin Equation Simulation. Chinese Physics C, 2006, 30(S2): 277-279.
[3]	WANG JinChuan , ZHAN WenLong , GUO ZhongYan , XI HongFei , LIU Hang , ZHOU JianQun , ZHAO YouXiong . Angular and Z Distributions of the Fragments at Forward and Intermediate Angles in the Reaction of 25MeV/u ⁴⁰Ar+¹¹⁵In,⁵⁸Ni,²⁷Al. Chinese Physics C, 2000, 24(1): 41-48.
[4]	Bao Jingdong . Three-Dimensonal Langevin Approach to Kinetic Energy and Mass Distribution of Fission-Fragments. Chinese Physics C, 1998, 22(11): 1013-1019.
[5]	Liu Guoxin , Chen Keliang , Yu Xian , DaiGuangxi . Fission Angular Distributions for the Incomplete Fusion Reactions. Chinese Physics C, 1997, 21(9): 777-782.
[6]	Liu Guoxing , Cheng Keliang , Yu Xian , Zheng Jiwen , Jin Weiyang , Sun Tongyu , Wu Dingqing , Zhao Lili , Zhang Xiang , Yin Xinmin , Qin Zhi . Fragment Angular Distributions of the 600 MeV ⁴⁰)Ar+¹⁹⁷ Au Reaction. Chinese Physics C, 1995, 19(4): 305-309.
[7]	Liu Fuhu , Tang Xiaowei . Multiplicity and Angular Distribution of Projectile Fragments in Relativistic Nucleus-Nucleus Collisions. Chinese Physics C, 1994, 18(4): 334-339.
[8]	JING Guiru , REN Guoxiao . Angular Distributions of Projectile Fragments Produced in Collisions of 200A GeV ³²S Beam with Cu. Chinese Physics C, 1993, 17(11): 976-978.
[9]	ZHANG Huan-Qiao , LIU Zu-Hua , XU Jin-Cheng , RUAN Ming , QIAN Xing , XU Kan , LV Jun . Fission-Fragment Angular Distributions for the ¹⁶O+²³⁸U Near-and Sub-Barrier Fusion-Fission Reaction. Chinese Physics C, 1992, 16(9): 826-831.
[10]	DAI Guang-Xi , QI Yu-Jin , ZHENG Ji-Wen , LIU Xi-Ming , . FISSION MEASUREMENT ON 5.5 TO 21.7MeV/A ²⁸Si+¹⁹⁷Au SYSTEM (Ⅱ) ANGULAR DISTRIBUTION OF ICF AND SF. Chinese Physics C, 1990, 14(8): 739-744.
[11]	LIU Guo-Xing , ZHENG Ji-Wen , CHEN Ke-Liang , WANG Su-Fang , BAI Xing-Ping , YU Xian . MEASUREMENT OF FISSION-FRAGMENT ANGULAR DISTRIBUTIONS AND EXCITATION FUNCTIONS FOR THE ¹²C+²⁰⁹Bi AND ¹⁴N+Pb REACTIONS. Chinese Physics C, 1990, 14(9): 829-834.
[12]	BAO Jing-Dong , ZHU Yi-Zhong . CALCULATION OF THE KINETIC-ENERGY DISTRIBUTIONS OF FISSION-FRAGMENTS FROM MONTE-CARLO SIMULATION TO THE FOUR-DIMENSIONAL LANGEVIN EQUATION. Chinese Physics C, 1989, 13(11): 1023-1031.
[13]	CHEN Xin-Yi , HU Ji-Min . CALCULATION OF THE EFFECTIVE MOMENT OF INERTIA OF FISSIONING NUCLEI AT SADDLE POINT. Chinese Physics C, 1989, 13(4): 380-383.
[14]	LIU Guo-Xing , CHEN Ke-Liang , ZHENG Ji-Wen , WANG Su-Fang , BAI Xing-Ping , YU Xian , FAN Zhi-Guo . MEASUREMENT OF FISSION FRAGMENT ANGULAR DISTRIBUTION IN HEAVY-IONS INDUCED REACTION. Chinese Physics C, 1989, 13(8): 733-739.
[15]	DAI Guang-Xi , LI Wei-Sheng . EXPLORATION OF OPTIMUM SHAPE IN SYMMETRY FISSION. Chinese Physics C, 1988, 12(5): 669-672.
[16]	LIU Guo-Xing , CHEN Ke-Liang , WANG Su-Fang , CAI Wei . ANGULAR DISTRIBUTIONS OF FISSION FRAGMENTS IN INTERACTIONS OF ¹²C IONS WITH VARIOUS TARGETS. Chinese Physics C, 1988, 12(3): 379-385.
[17]	DAI Guang-Xi , WANG Zheng-Da . THE SHAPE OF FISSION SCISSION POINT. Chinese Physics C, 1985, 9(5): 622-624.
[18]	HE Ze-Jun , LI Pan-Lin , ZHANG Jia-Ju . DIFFUSION MODEL OF HEAVY NUCLEUS FISSION. Chinese Physics C, 1983, 7(5): 611-617.
[19]	LIU GUO-XING , CHEN KE-LIANG , MA HONG-FAN , WANG SU-FANG , CAI WEI . DIRECT DETERMINATION OF THE COMPLETE FUSION CROSS SECTIONS FROM THE FISSION FRAGMENT ANGULAR DISTRIBUTION. Chinese Physics C, 1982, 6(6): 737-742.
[20]	He Ze-jun , Li Pan-lin . TRANSPORT MODEL OF HEAVY NUCLEUS FISSION. Chinese Physics C, 1980, 4(5): 640-648.

Access

Get Citation

LIU GOU-XING, WANG ZJO-GOU, YIN SHU-ZHI, HAO BIN-GAN, YUAN SHUANG-GUI and XIA XING-SHUO. ANGULAR DISTRIBUTIONS OF FISSION FRAGMENTS AND THE SHAPES OF THE SADDLE POINT OF COMPOUND NUCLEI[J]. Chinese Physics C, 1978, 2(3): 242-248.

RIS(for EndNote,Reference Manager,ProCite)

BibTex

Txt

Milestone

Received: 1977-08-15
Revised: 1900-01-01

Article Metric

Article Views(1666)
PDF Downloads(290)
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

ANGULAR DISTRIBUTIONS OF FISSION FRAGMENTS AND THE SHAPES OF THE SADDLE POINT OF COMPOUND NUCLEI

Received Date: 1977-08-15

Accepted Date: 1900-01-01

Available Online: 1978-06-05

Abstract: We have measured the angular distributions of fission fragments for a series of compound nuclei formed in the bombardment of ¹⁶⁹Tm, ¹⁷⁵Lu, ¹⁸¹Ta, ¹⁹⁷Au, ²⁰⁹Bi, ²³²Th and ²³⁸U by 78 MeV ¹²C ions and in the bombardment of natural lead by 96.6, 92.2, 88.1, 79.0 and 75.6 MeV ¹⁴N ions with mica track detectors. All the measured angular distributions can be fitted by the theoretical formula given by Halpern and Strutinski. The effective moments of inertia of the fissioning nuclei at the saddle point are derived from the angular distribution anisotropies. A comparison is made for the shapes of experimental saddle point with the theoretical predictions by the liquid drop model.

HTML

Reference (1)

ANGULAR DISTRIBUTIONS OF FISSION FRAGMENTS AND THE SHAPES OF THE SADDLE POINT OF COMPOUND NUCLEI

Abstract：

References

Access

Article Metrics

Metrics

通讯作者: 陈斌, bchen63@163.com

Email This Article

ANGULAR DISTRIBUTIONS OF FISSION FRAGMENTS AND THE SHAPES OF THE SADDLE POINT OF COMPOUND NUCLEI

HTML

目录