Analysis of activation characteristics of aluminum alloy irradiated by 14 MeV neutrons

Li Yu; Zhang Xiaomin; Cheng Shenghan; Yang Yang; Chen Zhilin; Peng Taiping

doi:10.11884/HPLPB201931.180222

Volume 31 Issue 2

Feb. 2019

Turn off MathJax

Article Contents

Article Navigation > High Power Laser and Particle Beams > 2019 > 31(2): 026001

Li Yu, Zhang Xiaomin, Cheng Shenghan, et al. Analysis of activation characteristics of aluminum alloy irradiated by 14 MeV neutrons[J]. High Power Laser and Particle Beams, 2019, 31: 026001. doi: 10.11884/HPLPB201931.180222

Citation:

Li Yu, Zhang Xiaomin, Cheng Shenghan, et al. Analysis of activation characteristics of aluminum alloy irradiated by 14 MeV neutrons[J]. High Power Laser and Particle Beams, 2019, 31: 026001. doi: 10.11884/HPLPB201931.180222

Citation:

PDF( 2136 KB)

Analysis of activation characteristics of aluminum alloy irradiated by 14 MeV neutrons

doi: 10.11884/HPLPB201931.180222

1.
Institute of Nuclear Physics and Chemistry, CAEP, Mianyang 621900, China
2.
Navy 91049 Unite, Qingdao 266000, China

Received Date: 2018-08-17
Rev Recd Date: 2019-01-30
Publish Date: 2019-02-15

Abstract

Abstract

Aluminum alloy, as a kind of important structural materials used in laser-driven Inertial Confinement Fusion (ICF) facilities, will be exposed to high-energy neutrons with high yields. The activation level of aluminum alloys should be taken into account when selecting the materials used in ICF facilities during design. Specific activities and dose rates for three different aluminum alloys after irradiation by 14 MeV neutrons were calculated and compared using the FISPACT inventory code. The results show that both specific activity and dose rate decrease 3 magnitudes in one week after irradiation. It is found that aluminum contributes to more than 90% of the total activity (dose rate) in the first week while Manganese and zinc in aluminum alloys are dominant in longer cooling times. The main residual nuclides are ²⁴Na, ⁵⁴Mn and ⁶⁵Zn.For safety considerations, it is better to choose aluminum alloys with lower Mn and Zn contents.
- fusion neutron,
- aluminum alloy,
- activation,
- activity,
- dose,
- radiation protection

FullText(HTML)

References(9)

References

[1]	Moses E I. The National Ignition Facility and the National Ignition Campaign[J]. IEEE Trans Plasma Science, 2010, 38(4): 684-689. doi: 10.1109/TPS.2010.2042466
[2]	Brereton S. Overview of the National Ignition Facility[J]. Health Physics, 2013, 104(6): 544-556. doi: 10.1097/HP.0b013e31828cf5cd
[3]	Foley R J, Karpenko V P, Adams C H, et al. Design of the target area for the National Ignition Facility[C] //The 2nd Annual International Conference on Solid State Lasers for Application to ICF, 1996.
[4]	Latkowski J F, Tobin M T, Singh M S. Neutronics and shielding analysis of the National Ignition Facility[C] //The 11th Topical Meeting on the Technology of Fusion Energy. 1994.
[5]	Sitaraman S, Brereton S, Dauffy L, et al. Post-shot radiation environment following low-yield shots inside the National Ignition Facility[R]. LLNL-CONF-461492, 2010.
[6]	GB/T 3190—2008, 变形铝及铝合金化学成分[S]. GB/T 3190-2008. Wrought aluminum and aluminum alloy-chemical components
[7]	Forrest R A. FISPACT-2007: user manual[R]. Report UKAEA FUS 534, 2007.
[8]	Forrest R A, Kopecky J. The activation system EASY-2007[J]. Journal of Nuclear Materials, 2009, 386-388: 878-881. doi: 10.1016/j.jnucmat.2008.12.194
[9]	Sidell J. EXTRA: A digital computer program for the solution of stiff sets of ordinary initial value, first order differential equations[R]. AEEW-R-799, 1976.