Experimental Activities in China
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1 Experimental Activities in China Yu Hongwei China Nuclear Data Center China Institute of Atomic Energy
2 The following nuclear data measurement laboratories are included in china Nuclear Data Network: China Institute of Atomic Energy(CIAE) Peking University Sichuan University, Lanzhou University and etc.
3 China Institute of Atomic Energy The Secondary Neutron Double-differential Cross Sections Measurement The neutron emission double-differential cross sections(ddxs) for V and Be at MeV neutrons, for Be, 6,7 Li and 0 Fe at 8.17 MeV neutrons, were measured using normal and abnormal fast neutron time-of-flight(tof) spectrometers on HI-13 Tandem Accelerator in China Institute of Atomic Energy(CIAE).
4 Comparison of elastic differential cross sections at 10.26MeV and 8.17MeV for Be with evaluations and other measurements
5 For beryllium
6 DDX for 6 Li at 8.17 MeV Neutrons measured in CIAE
7 Comparison of DDX for 6 Li at 8.17 MeV Neutrons measured in CIAE with evaluations and calculation
8 Comparison of elastic differential cross sections at 8.17MeV for 0 Fe with evaluations and other measurements
9 Comparison of DDX for Vanadium at MeV Neutrons measured in CIAE and PTB
10 Comparison of DDX for Vanadium at MeV Neutrons measured in CIAE and PTB
11 China Institute of Atomic Energy Measurement of the cross section of D(d,γ) 4 He reaction at 300keV For the very small yields of high energy γ-rays and the serious background of neutrons and cosmic rays, a big NaI-Plastic anti-compton spectrometer has been employed and the method of the time of flight (TOF) has been used. The branching ratios of D(d,γ) 4 He and D(d,p)T : Γγ/Γp=(1.064±0.266) 10-7 thick Γγ/Γp=(1.104±0.276) 10-7 thin The cross sections are 2.47 nb for the thick target and 4.36 nb for thin the target.
12 China Institute of Atomic Energy Measurement of the thermal neuotron cross sections of the reaction of 126 Sn(n, γ) 127g Sn, 127m Sn A carrier-free radiochemical separation procedure of 126 Sn from high level liquid waste (HLLW) is based on the separation using the strong alkali anion exchanger resin and the precipitation of PbS. Monitors : 197 Au and 55 Mn Irradiated in 101 reactor in CIAE. HPGeγdetector. The thermal neutron cross sections 126 Sn(n, γ) 127g Sn: σ g =0.200±0.039b 126 Sn(n, γ) 127m Sn: σ m =0.387±0.101b The total reaction cross section of the reaction 126 Sn(n, γ) 127 Sn is 0.587±0.140b.
13 Peking University Differential cross sections and angle integrated cross sections for the 6 Li(n,t) 4 He reaction at En=1.54 and 2.25 MeV were measured by using the gridded ionization chamber method. Mono-energetic neutrons were produced through the T(p,n) 3 He reaction. The experiment was performed at the 4.5MV Van de Graaff of Peking University. Neutron flux was determined by the 238 U(n,f) reaction. Present results were compared with the existing data
14 Differential cross section for the Differential cross section for the 6 Li(n,t) 4 He Reaction at En=1.54 MeV China Institute of Atomic Energy 55 dσ/dω (mb/sr) Present work Exfor11076(54) Exfor MeV(74) Exfor MeV(74) cosθ c
15 Differential cross section for the 6 Li(n,t) 4 He Reaction at En=2.25 MeV China Institute of Atomic Energy Present work Exfor21843 *13.7(82) Exfor MeV(75) Exfor MeV(75) Exfor40455 (60) dσ/dω (mb/sr) cosθ c
16 Cross Section (mb) 400 Bartle(79) Clements(72) 350 Gabbard(59) Murrary(59) 300 Ribe(56) Our W ork in Our W ork in 2002 Present work 200 ENDF/B-VI JENDL En (MeV) The result of 6 Li(n,t) 4 He cross section compared with existing data
17 Lanzhou University The following cross sections was measured at neutron energy from 13.5 to 14.6MeV at Lanzhou University by using the activation method : 150 Nd(n,2n) 149 Nd, 148 Nd(n,2n) 147 Nd, 142 Nd(n,2n) 141 Nd, 160 Gd(n,2n) 159 Gd, 141 Pr(n,p) 141 Ce, 139 La(n,p) 139 Ba, 158 Gd(n,p) 158 Eu, 146 Nd(n,p) 146 Pr
18 Sichuan University The cross sections for the 115 In(n, γ) 116 In, 116m In(n, γ) 117 In and 71 Ga(n,γ) 72 Ga reaction were measured in neutron energy range from 30 to 1500 kev in the past years. No new measurement in 2004.
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Experimental Activities in China (June 2008 YU Hongwei China Nuclear Data Center, China Institute of Atomic Energy The facilities were used for the nuclear data measurements and studies including the China
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