Guangyuan Luan
Current Organizations / Institutes
The organizations/institutes from the scholar's latest article
Research Subjects
Guangyuan Luan has a total of 44 co-authors. Here are the top co-authors by number of shared publications:
Jie Ren
3 shared publications- Hong-Yi Wu
Peking University
2 shared publications Jie Bao
Key Laboratory of Nuclear Data, China Institute of Atomic Energy, Beijing 102413, China
2 shared publications- Changlin Lan
School of Nuclear Science and Technology, Lanzhou University, Lanzhou, China
1 shared publication - Guangxu Zhou
Key Laboratory of Nuclear Data, China Institute of Atomic Energy, Beijing 102413, China
1 shared publication Han Yi
Institute of High Energy Physics, Chinese Academy of Sciences (CAS), Beijing 100049, China
1 shared publication
Latest Publications
- 1 July 2025
- Published by IOP Publishing in Journal of Instrumentation
- Vol. 20 (07) , P07039
Study of the time-tagged fast neutron tomography
Fast neutron imaging is a powerful tool for inspecting large and dense objects. However, strong background interference of scattered neutrons and gamma rays from dominative elastic and inelastic scattering reactions significantly reduces the signal-to-noise ratio (SNR) and degrade the quality of the obtained images. To address this challenge, a movable time-tagged D-T neutron computerized tomography (CT) system was developed at the China Institute of Atomic Energy (CIAE). A cone-beam geometry neutron detector array was constructed to measure neutrons in coincidence with associated alpha particles from the 3H(d, n)4He reaction to determine their direction and time-of-flight (TOF). Thus, background events can be effectively suppressed. The three-dimensional structure of test objects can be reconstructed by a cone beam CT reconstruction algorithm with selected experimental transmission neutron events. The time resolution is 0.805 ns determined by TOF measurement. The spatial resolution is 0.885 mm determined by Edge Spread Function measurement. The deviation between actual and reconstructed sizes of a set of steel rings with diameters in 5–15 cm is less than 1 mm.
- 1 July 2025
- Published by IOP Publishing in Journal of Instrumentation
- Vol. 20 (07) , P07039
Study of the time-tagged fast neutron tomography
Fast neutron imaging is a powerful tool for inspecting large and dense objects. However, strong background interference of scattered neutrons and gamma rays from dominative elastic and inelastic scattering reactions significantly reduces the signal-to-noise ratio (SNR) and degrade the quality of the obtained images. To address this challenge, a movable time-tagged D-T neutron computerized tomography (CT) system was developed at the China Institute of Atomic Energy (CIAE). A cone-beam geometry neutron detector array was constructed to measure neutrons in coincidence with associated alpha particles from the 3H(d, n)4He reaction to determine their direction and time-of-flight (TOF). Thus, background events can be effectively suppressed. The three-dimensional structure of test objects can be reconstructed by a cone beam CT reconstruction algorithm with selected experimental transmission neutron events. The time resolution is 0.805 ns determined by TOF measurement. The spatial resolution is 0.885 mm determined by Edge Spread Function measurement. The deviation between actual and reconstructed sizes of a set of steel rings with diameters in 5–15 cm is less than 1 mm.
- 13 February 2023
- Published by American Physical Society (APS) in Physical Review C
- Vol. 107 (2) , 024606
Measurement of the cross section from 4 keV to 100 MeV using the white neutron source at the CSNS Back-n facilityThe neutron-induced fission cross section of was measured relative to at the back-streaming white neutron beam line (Back-n) of the China Spallation Neutron Source (CSNS). A multicell fast fission ionization chamber was used to perform the measurement. The reliability of the measurement was verified by the high consistency of 's resonances between the measurement and the evaluation data. The fission cross sections from to are obtained with 1.7–5.8 % uncertainty when unfolding uncertainties are excluded. The total uncertainties including the unfolding errors, which reflect the effect of the double-bunch unfolding method, are 2.6–15 % from to .- 13 February 2023
- Published by American Physical Society (APS) in Physical Review C
- Vol. 107 (2) , 024606
Measurement of the cross section from 4 keV to 100 MeV using the white neutron source at the CSNS Back-n facilityThe neutron-induced fission cross section of was measured relative to at the back-streaming white neutron beam line (Back-n) of the China Spallation Neutron Source (CSNS). A multicell fast fission ionization chamber was used to perform the measurement. The reliability of the measurement was verified by the high consistency of 's resonances between the measurement and the evaluation data. The fission cross sections from to are obtained with 1.7–5.8 % uncertainty when unfolding uncertainties are excluded. The total uncertainties including the unfolding errors, which reflect the effect of the double-bunch unfolding method, are 2.6–15 % from to .