Study of Fragment Angular Excitation Mechanism in Low Energy Fission

  • A four-parameter correlation measurement, including two semiconductors and a liquid scintillator as well as a 60% HPGe detector, was employed to measure the correlations of neutron multiplicity and γ yield with the fission parameters, such as fragment mass number A* and total kinetic energy TKE of fragments. Because it is the first time that the absolute γ yield for the selected fragment is determined, so the angular momentum excitation of fragments can be investigated using the correlations of γ multiplicity with the neutron yield as well as with A* and TKE. The results show that there is the complex correlation between the angular momentum excitation and the fragment deformation. The measured data can not be explained on the basis of the bending and wriggling excitation modes, but it could be understood partly by the assumption that there exists the positive correlation between the angular momentum excitation of fragments and the excitation energy of fission nuclei at the scission.
  • 加载中
  • [1] . Mikhailov N, Quentin P et al. Proceedings of the SecondInt. Conf. on Fission and Properties of Neuteon-Rich Nu-clei. Edited by J. H. Hamilton, W. R. Philips and H. K.Carter, Scotland, UK, June 28-July 3, 1999, 384-3922. Glāssel P, Schmid-Fabian R, Schwalm D. Nucl. Phys., 1972,A502: 315-324c3. Nifenecker H et al. Proceedings of the Third IAEA Sym-posium on the Phys. and Chem. of Fission, Held by IAEA,Rochester, New York, USA, 13-17, Aug. 1973, 2: 1174. HAN Hong-Yin, LI An-Li, CHEN Jin-Hua et al. BeijingInt. Symp. on Fast Neutron Physics, Edited by Sun Zuxunet al. Beijing, China, 9-13 Sep., 1991, 79-845. Knitter H H, Hambsch F J et al. Nucl. Phys., 1992, A536:221-2596. Krupa L, Kniajeva G N, Bogatchev A A et al. Proceed-ings of the Third Int. Conf. on Fission and Properties ofNeuteon-Rich Nuclei. Edited by J. H. Hamilton, A. V. Ra-mayya and H. K. Carter, Florida, USA, 3-9, Nov. 2002,207-2147. Wilhelmy J B, Cheifetz E et al. Phys. Rev., 1989, C5:2041-20608. Zieliinska-Pfabé M, Dietrich K. Phy. Lett., 1974, B49:123-128
  • 加载中

Get Citation
HAN Hong-Yin, XIA Hai-Hong, WANG Tao-Feng, MENG Qian-Hua, ZHU Li-Ping, WANG Li-Ming and HOU Long. Study of Fragment Angular Excitation Mechanism in Low Energy Fission[J]. Chinese Physics C, 2006, 30(S2): 199-201.
HAN Hong-Yin, XIA Hai-Hong, WANG Tao-Feng, MENG Qian-Hua, ZHU Li-Ping, WANG Li-Ming and HOU Long. Study of Fragment Angular Excitation Mechanism in Low Energy Fission[J]. Chinese Physics C, 2006, 30(S2): 199-201. shu
Milestone
Received: 2006-10-18
Revised: 1900-01-01
Article Metric

Article Views(2400)
PDF Downloads(600)
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

  1. 本站搜索
  2. 百度学术搜索
  3. 万方数据库搜索
  4. CNKI搜索

Email This Article

Title:
Email:

Study of Fragment Angular Excitation Mechanism in Low Energy Fission

    Corresponding author: HAN Hong-Yin,
  • China Institute of Atomic Energy, Beijing 102413, China2 Northwest Institute of Nuclear Technology, Xi'an 710024, China

Abstract: A four-parameter correlation measurement, including two semiconductors and a liquid scintillator as well as a 60% HPGe detector, was employed to measure the correlations of neutron multiplicity and γ yield with the fission parameters, such as fragment mass number A* and total kinetic energy TKE of fragments. Because it is the first time that the absolute γ yield for the selected fragment is determined, so the angular momentum excitation of fragments can be investigated using the correlations of γ multiplicity with the neutron yield as well as with A* and TKE. The results show that there is the complex correlation between the angular momentum excitation and the fragment deformation. The measured data can not be explained on the basis of the bending and wriggling excitation modes, but it could be understood partly by the assumption that there exists the positive correlation between the angular momentum excitation of fragments and the excitation energy of fission nuclei at the scission.

    HTML

Reference (1)

目录

/

DownLoad:  Full-Size Img  PowerPoint
Return
Return