Chinese Physics C > 2002, Vol. 26 > Issue(1): 69-73

The Experimental Study for Increasing Efficiency of On-Line Isotope Separator

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

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Abstract：
The progress and the on-line experimental results of isotope separator on-line in Lanzhou(ISOLAN) by using the low and the medium energy beams are described. The resolving power of ISOLAN is obtained to be 500\_700 for Xe by using FEBIAD ion source. The off-line overall efficiency is 3.1% for Krypton and 4.5% for Xenon. The on-line overall efficiency is 1.5%—2.0% for ¹⁰⁴In, ¹⁰⁴Ag and ¹⁰⁴Gd,and 5% for ¹⁹⁹Hg. The isotopes of Hg,At and Rn produced in the bombardment of natural lead targets with ¹⁸O beam at 30MeV/u were successfully separated by ISOLAN. The highest energy of 1.234 MeV of γ-ray originated from the decay of ²⁰⁸Hg with a production cross-section of 5μb was observed.

References

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. BURKARD K H et al. N. I. M., 1976, 139: 275—2802. GRUSKE C et al. N. I. M., 1981, 186: 61—693. Kirchner R, Burkard K H, Huller W et al. N. I. M., 1981, 186: 295—3054. HUANG Ye-Cheng, WANG Tong-Qing, TAN Jing-Feng et al. N. I. M., 1990, A290: 293—2965. Nielsen B R. N. I. M., 1981, 186: 457—4616. FAN Hong-Mei, Wang Tong-Qing, Guo Bin et al. Nuclear Techniques, 2001, 24(3): 227—232(in Chinese)(范红梅, 王同庆, 郭斌等. 核技术, 2001, 24(3): 227—232)7. ZHANG Li, Wang Tong-Qing, FAN Hong-Mei et al. Observation of the target like products distribution in the reaction of 600MeV. 18O +Pb(thick target) by using ISOI Proceeding s of 11th National Conferenceon Nuclear Physics, Xiang Fan: China, Wuhan University, 2000, 88(in Chinese)(张立, 王同庆, 范红梅等. 在线同位素分离器上观察600MeV18O +Pb(厚靶)反应类靶产物分布.第十一届全国核物理大会论文集. 襄樊: 武汉大学, 2000, 88)

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FAN Hong-Mei, WANG Tong-Qing, GUO Bin, GUO Ying-Xiang, ZHANG Li and ZHAO Jin-Hua. The Experimental Study for Increasing Efficiency of On-Line Isotope Separator[J]. Chinese Physics C, 2002, 26(1): 69-73.

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Received: 2000-11-14
Revised: 1900-01-01

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1.
沈阳化工大学材料科学与工程学院沈阳 110142

The Experimental Study for Increasing Efficiency of On-Line Isotope Separator

Corresponding author:FAN Hong-Mei,

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

Received Date:2000-11-14
Accepted Date:1900-01-01
Available Online:2002-01-05

Abstract:The progress and the on-line experimental results of isotope separator on-line in Lanzhou(ISOLAN) by using the low and the medium energy beams are described. The resolving power of ISOLAN is obtained to be 500\_700 for Xe by using FEBIAD ion source. The off-line overall efficiency is 3.1% for Krypton and 4.5% for Xenon. The on-line overall efficiency is 1.5%—2.0% for¹⁰⁴In,¹⁰⁴Ag and¹⁰⁴Gd,and 5% for¹⁹⁹Hg. The isotopes of Hg,At and Rn produced in the bombardment of natural lead targets with¹⁸O beam at 30MeV/u were successfully separated by ISOLAN. The highest energy of 1.234 MeV of γ-ray originated from the decay of²⁰⁸Hg with a production cross-section of 5μb was observed.