Measurement of the Cross Sections for Ba Isotopes

XU Yan-Bing; YANG Wei-Fan; YUAN Shuang-Gui; XIAO Yong-Hou; PAN Qiang-Yan; LI Ying-Jun

Chinese Physics C> 2002, Vol. 26> Issue(6) : 589-593

Measurement of the Cross Sections for Ba Isotopes

Institute of Modern Physics, The Chinese Academy of Sciences, Lanzhou 730000, China

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Abstract：
Present experiment was performed in order to get more information about intermediate energy heavy ion collisions for the further understanding of that how nuclear reaction mechanisms change between the two extreme types of nuclear behaviors, the nuclear collisions at low and high energy. Ba isotopes were produced by 60 MeV/u ^{18O bombardment of nature uranium via ²³⁸U(¹⁸O,X) reaction, and then separated from the irradiated U targets by using radiochemical procedure. The accumulative sections of Ba isotopes are obtained through the processing and analyzing of time sequence γ ray spectra. As a result, the two peak phenomenon in the distribution of the Ba isotopes is observed. It can be presumed that the occurrence of the double Gaussian distribution is weakly related to the projectile energy, but closely related to the projectile target combination. Present experiment also implied however, that fragmentation reaction induced by intermediate energy heavy ions followed by radiochemical separation is an efficacious method to produce nuclei far from stability, thereby to study their decay properties.}

References

[1]

. Loveland W, Aleklett K, Sihver L et al. Phys.,Rew.C ,1990,41(3):973—9872. Schroder W U, Huizenga J R. Nucl. Phys.,1989,A502:473c 3. Viola V E. Nucl. Phys.,1989,A502:531c 4. HU Ji-Min. Physics of Nuclear Fission, Beijing:Beijing University Press, 1999,133—211(in Chinese)(胡济民.核裂变物理学,北京:北京大学出版社,1999,133—211)5. Tsekhanovich I, Denschlag H O, Davi M et al. Nucl. Phys.,1999,A658:2176. de Saint Simon M, Haan S, Audi G et al. Phys. Rew.C ,1982,26(6):2447—2457 7. Scott D K. Nucl. Phys.,1981,A354:375 8. YU Y W, Lee C H, Moody K J et al. Phys. Rew. C, 1987,36(6):2396—2402 9. McGaughey P L, Loverland W, Morrissey D J et al. Phys. Rew. C, 1982,31(3):896—909

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XU Yan-Bing, YANG Wei-Fan, YUAN Shuang-Gui, XIAO Yong-Hou, PAN Qiang-Yan and LI Ying-Jun. Measurement of the Cross Sections for Ba Isotopes[J]. Chinese Physics C, 2002, 26(6): 589-593.

XU Yan-Bing, YANG Wei-Fan, YUAN Shuang-Gui, XIAO Yong-Hou, PAN Qiang-Yan and LI Ying-Jun. Measurement of the Cross Sections for Ba Isotopes[J]. Chinese Physics C, 2002, 26(6): 589-593. shu

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Received: 2001-07-02
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沈阳化工大学材料科学与工程学院沈阳 110142

Measurement of the Cross Sections for Ba Isotopes

Corresponding author: XU Yan-Bing,

Institute of Modern Physics, The Chinese Academy of Sciences, Lanzhou 730000, China

Received Date: 2001-07-02

Accepted Date: 1900-01-01

Available Online: 2002-06-05

Abstract: Present experiment was performed in order to get more information about intermediate energy heavy ion collisions for the further understanding of that how nuclear reaction mechanisms change between the two extreme types of nuclear behaviors, the nuclear collisions at low and high energy. Ba isotopes were produced by 60 MeV/u ^{18O bombardment of nature uranium via ²³⁸U(¹⁸O,X) reaction, and then separated from the irradiated U targets by using radiochemical procedure. The accumulative sections of Ba isotopes are obtained through the processing and analyzing of time sequence γ ray spectra. As a result, the two peak phenomenon in the distribution of the Ba isotopes is observed. It can be presumed that the occurrence of the double Gaussian distribution is weakly related to the projectile energy, but closely related to the projectile target combination. Present experiment also implied however, that fragmentation reaction induced by intermediate energy heavy ions followed by radiochemical separation is an efficacious method to produce nuclei far from stability, thereby to study their decay properties.}

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Measurement of the Cross Sections for Ba Isotopes

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