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《中国物理C》(英文)编辑部
2024年10月30日

A PROBABLE NEW TYPE OF REACTION MECHANISM —DOUBLE α DIRECT TRANSFER PROCESS

  • It is assumed that 8Be consists of two α-particles which are close to each other in configration space. A spectroscopic density of 8Be-cluster in the residue nuclei is them obtained which is proportional to the square of the preformation probability of α-particle at nuclear surface. Using the improved method of parametrization of EFRDWBA overlap integral[1], We calculate the double diffirential energy spectra and angular distributions of α-particles for the reactions 209Bi(12C, α) 217Fr and extracte the preformation probability of α-particle at the surface of 217Fr nuclei from fitting the experimental data. The agreement within the range of calculation error between the preformation probabilities extracted from transfer reactions and α-decay suggests that the reaction 209Bi(12C, α) 217Fr may be explained as a diuble α direct transfer process.

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  • [1] T. Udagawa, T. Tamura and D. Price, Phys. Rev., C21 (1980), 1891,[2] 徐树威、吴国华、缪容之、韩飞,(待发表).[3] R. Bimbot, D. Gardes, M. F. Rivet, Nucl. Phys.; A189 (1972), 193,[4] 沈文庄、徐树威、王大延、谢元祥、郭忠言、李祖玉, 高能物理与核物理, 1(1977), 71,[5] 郭俊盛、孙锡军、徐晓冀、王傅、刘洪业, 高能物理与核物理, 2 (1978), 143,[6] 徐树威, 冉启慧、马洪范, 2 (1978), 534,[7] 中国科学院近代物理研究所内部资料, 徐树威、吴国华.[8] 谢元祥、范国英等, 中国科学院近代物理研究所科技情报资料汇编, 3 (1979),[9] A. R. Barnet and J. S. Lilley, Phys. Rev., C9 (1974), 2010,[10] 详细情况请参阅文献[2].[11] 中国科学院近代物理研究所内部资料, 缪容之、徐树威.[12] L. Milazzo-colli, G. M. Brage-marcazzan and M. Milazzo, Nuovo Cimcnto, 30A (1975), 632.[13] 中国科学院近代物理研究所内部资料, 韩飞、徐树威.[14] D. Kurath, Phys. Rev., C7 (1973), 1390,[15] U. Facchini and E. Saetta-Menichlla, Encrgia Nucleate, 15 (1968), 54.[16] R. Bonetti and L. Milazzo-colli, Phys. Lett., 49B (1974), 17.
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Get Citation
XU Shu-Wei, WU Guo-Hua, MIAO Rong-Zhi and HAN Fei. A PROBABLE NEW TYPE OF REACTION MECHANISM —DOUBLE α DIRECT TRANSFER PROCESS[J]. Chinese Physics C, 1983, 7(2): 217-222.
XU Shu-Wei, WU Guo-Hua, MIAO Rong-Zhi and HAN Fei. A PROBABLE NEW TYPE OF REACTION MECHANISM —DOUBLE α DIRECT TRANSFER PROCESS[J]. Chinese Physics C, 1983, 7(2): 217-222. shu
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Received: 1900-01-01
Revised: 1900-01-01
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A PROBABLE NEW TYPE OF REACTION MECHANISM —DOUBLE α DIRECT TRANSFER PROCESS

    Corresponding author: XU Shu-Wei,

Abstract: 

It is assumed that 8Be consists of two α-particles which are close to each other in configration space. A spectroscopic density of 8Be-cluster in the residue nuclei is them obtained which is proportional to the square of the preformation probability of α-particle at nuclear surface. Using the improved method of parametrization of EFRDWBA overlap integral[1], We calculate the double diffirential energy spectra and angular distributions of α-particles for the reactions 209Bi(12C, α) 217Fr and extracte the preformation probability of α-particle at the surface of 217Fr nuclei from fitting the experimental data. The agreement within the range of calculation error between the preformation probabilities extracted from transfer reactions and α-decay suggests that the reaction 209Bi(12C, α) 217Fr may be explained as a diuble α direct transfer process.

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