Dependence of the cross sections for Ir isotopes on the values of Q<SUB>gg</SUB> in the heavy ion collision

YANG Wei-Fan; ZHAO Zhi-Zheng; YUAN Shuang-Gui; XU Yan-Bing; LU Xi-Ting

doi:10.1088/1674-1137/33/S1/063

Chinese Physics C> 2009, Vol. 33> Issue(S1) : 196-198 DOI: 10.1088/1674-1137/33/S1/063

Dependence of the cross sections for Ir isotopes on the values of Q_gg in the heavy ion collision

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¹⁹⁷Au were irradiated with 47 MeV/u ¹²C ions. Iridium was produced via the multinucleon transfer reactions in bombardments of ¹⁹⁷Au with ¹²C. and was separated radiochemically from Au and the mixture of the reaction products. The γ radioactivities of Ir isotopes were measured by using a HPGe detector. The production cross sections of Ir isotopes were determined from activities of Ir isotopes at the end of bombardment and the other relative data. It has been found that the cross sections for neutron-rich isotopes of iridium show an exponential dependence on the values of Q_gg. Our experimental results also demonstrate lack of correlation between the cross sections and Q_gg in the case of neutron-deficient isotopes of iridium. The fact can be explained from that neutron-rich isotopes of iridium were produced in the deep inelastic transfer reactions.

References

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. Volkov V V. Proc Int Conf on Reactions between complex Nuclei. Nashville, 1974, 2: 3632. Artukh A G, Volkov V V, Gridnev G F. Izvestia Akad Nauk(USSR) Ser. Phys., 1975, 39: 23. Volkov V V. Particles and Nucleus, 1975, 6: 10404. Gatty B, Guerreau B, Lefort X et al. Nucl. Phys. A, 1975,253: 5115. Volkov V V et al. Proc. Conf. on Direct Interactions and Nuclear Reaction Mechanisms, New York-London, 1963,9946. YANG Wei-Fan, ZHAO Zhi-Zheng, LI Zong-Wei et al. J Radioanal Nucl. Chem. Letters, 1996, 214: 439-4467. ZHANG Li, ZHAO Jin-Hua, ZHENG Ji-Wen et al. Phys.Rev. A, 1998, 58: 156

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YANG Wei-Fan, ZHAO Zhi-Zheng, YUAN Shuang-Gui, XU Yan-Bing and LU Xi-Ting. Dependence of the cross sections for Ir isotopes on the values of Q_gg in the heavy ion collision[J]. Chinese Physics C, 2009, 33(S1): 196-198. doi: 10.1088/1674-1137/33/S1/063

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Received: 2008-10-23
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通讯作者: 陈斌, bchen63@163.com

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沈阳化工大学材料科学与工程学院沈阳 110142

Dependence of the cross sections for Ir isotopes on the values of Q_gg in the heavy ion collision

Corresponding author: YANG Wei-Fan,

Received Date: 2008-10-23

Accepted Date: 1900-01-01

Available Online: 2009-01-10

Abstract: ¹⁹⁷Au were irradiated with 47 MeV/u ¹²C ions. Iridium was produced via the multinucleon transfer reactions in bombardments of ¹⁹⁷Au with ¹²C. and was separated radiochemically from Au and the mixture of the reaction products. The γ radioactivities of Ir isotopes were measured by using a HPGe detector. The production cross sections of Ir isotopes were determined from activities of Ir isotopes at the end of bombardment and the other relative data. It has been found that the cross sections for neutron-rich isotopes of iridium show an exponential dependence on the values of Q_gg. Our experimental results also demonstrate lack of correlation between the cross sections and Q_gg in the case of neutron-deficient isotopes of iridium. The fact can be explained from that neutron-rich isotopes of iridium were produced in the deep inelastic transfer reactions.

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Dependence of the cross sections for Ir isotopes on the values of Q_gg in the heavy ion collision

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Dependence of the cross sections for Ir isotopes on the values of Q_gg in the heavy ion collision

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Dependence of the cross sections for Ir isotopes on the values of Qgg in the heavy ion collision

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Dependence of the cross sections for Ir isotopes on the values of Qgg in the heavy ion collision

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Dependence of the cross sections for Ir isotopes on the values of Q_gg in the heavy ion collision

Dependence of the cross sections for Ir isotopes on the values of Q_gg in the heavy ion collision