Chinese Physics C > 2012, Vol. 36 > Issue(7): 670-674 DOI: 10.1088/1674-1137/36/7/018

Measurement and analysis of the²³⁸U(n, 2n) reactionrate in depleted uranium/polyethylene shells

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In order to check the conceptual design of the subcritical blanket in a fusion-fission hybrid reactor, a depleted uranium/polyethylene simulation device with alternate shells has been established. The measurement of the ²³⁸U(n, 2n) reaction rate was carried out using an activation technique, by measuring the 208 keVγ rays emitted from ²³⁷U. The self-absorption of depleted uranium foils with different thicknesses was experimentally corrected. The distribution of the ²³⁸U(n, 2n) reaction rate at 90° to the incident D ⁺beam was obtained, with uncertainty between 5.3% and 6.0%. The experiment was analyzed using MCNP5 code with the ENDF/BVI library, and the calculated results are all about 5% higher than the measured results.

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YAN Xiao-Song, LIU Rong, LU Xin-Xin, JIANG Li, WEN Zhong-Wei and HAN Zi-Jie. Measurement and analysis of the ²³⁸U(n, 2n) reactionrate in depleted uranium/polyethylene shells[J]. Chinese Physics C, 2012, 36(7): 670-674. doi: 10.1088/1674-1137/36/7/018

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Received: 2011-09-09
Revised: 1900-01-01

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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

Measurement and analysis of the²³⁸U(n, 2n) reactionrate in depleted uranium/polyethylene shells

Corresponding author:YAN Xiao-Song,

Received Date:2011-09-09
Accepted Date:1900-01-01
Available Online:2012-07-05

Abstract:In order to check the conceptual design of the subcritical blanket in a fusion-fission hybrid reactor, a depleted uranium/polyethylene simulation device with alternate shells has been established. The measurement of the²³⁸U(n, 2n) reaction rate was carried out using an activation technique, by measuring the 208 keVγ rays emitted from²³⁷U. The self-absorption of depleted uranium foils with different thicknesses was experimentally corrected. The distribution of the²³⁸U(n, 2n) reaction rate at 90° to the incident D⁺beam was obtained, with uncertainty between 5.3% and 6.0%. The experiment was analyzed using MCNP5 code with the ENDF/BVI library, and the calculated results are all about 5% higher than the measured results.

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Measurement and analysis of the²³⁸U(n, 2n) reactionrate in depleted uranium/polyethylene shells

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Measurement and analysis of the²³⁸U(n, 2n) reactionrate in depleted uranium/polyethylene shells

Corresponding author:YAN Xiao-Song,

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Measurement and analysis of the238U(n, 2n) reactionrate in depleted uranium/polyethylene shells

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Measurement and analysis of the238U(n, 2n) reactionrate in depleted uranium/polyethylene shells

Corresponding author:YAN Xiao-Song,

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Measurement and analysis of the²³⁸U(n, 2n) reactionrate in depleted uranium/polyethylene shells

Measurement and analysis of the²³⁸U(n, 2n) reactionrate in depleted uranium/polyethylene shells