ENTRY 32802 20210201 32003280200000001
SUBENT 32802001 20210201 32003280200100001
BIB 16 57 3280200100002
TITLE Measurement of the 238U(n,g)239U reaction cross 3280200100003
sections in the energy range of 2.0-5.0 MeV by using 3280200100004
a neutron activation technique 3280200100005
AUTHOR (Zhiling Yuan,Su Shen,Xiaobing Luo) 3280200100006
INSTITUTE (3CPRSIU) 3280200100007
REFERENCE (J,JRN,324,277,2020) 3280200100008
#doi:10.1007/s10967-020-07046-3 3280200100009
FACILITY (VDGT,3CPRSIU) 3 MV tandem accelerator 3280200100010
INC-SOURCE (P-T) The mono-energetic neutrons were generated by 3280200100011
the T(p,n)3He reaction with a proton beam energy of 3280200100012
5.2 MeV. The tritium-titanium (T-Ti) target has a 3280200100013
thickness of 1.833 mg/cm2. The atom ratio of T to Ti 3280200100014
in the target is 1.84. 3280200100015
SAMPLE Four disc-shaped samples were made of U3O8 powder 3280200100016
with a purity of higher than 99.95%. The thickness of 3280200100017
the four samples was 0.972, 0.780, 0.831 and 0.841 3280200100018
g/cm2, respectively. These U3O8 samples were 3280200100019
sandwiched between two thin Au foils. The sandwichs 3280200100020
of Au-U3O8-Au were wrapped with 0.3 mm thick cadmium. 3280200100021
DETECTOR (HPGE) A low-background coaxial high-purity germanium 3280200100022
detector (GEM30P4-76, ORTEC). The detector has a 3280200100023
relative efficiency of 30%, and an energy resolution 3280200100024
of 1.85 keV FWHM at 1.33 MeV and 850 eV FWHM at 122 3280200100025
keV. The calibration of energy and efficiency was 3280200100026
done by the standard point sources 137Cs and 152Eu. 3280200100027
METHOD (ACTIV) The first three samples were mounted at 4 cm 3280200100028
from the T-Ti target and at 0, 60 and 90 deg angles 3280200100029
relative to the direction of the proton beam and 3280200100030
center of the T-Ti target. The last one was mounted 3280200100031
at 673 cm and 90 deg angle. These samples were 3280200100032
irradiated for 5.3 h and cooled for 3.0 h. 3280200100033
MONITOR (79-AU-197(N,G)79-AU-198,,SIG) 3280200100034
Xiaobing Luo (2021-3-3): 3280200100035
The values were obtained by averaging the data of 3280200100036
ENDF/B-VIII.0 3280200100037
DECAY-MON (79-AU-198-G,2.69D,DG,411.80,0.9562) 3280200100038
MONIT-REF (,,3,ENDF/B-VIII.0,7925,2018) 3280200100039
CORRECTION The total correction factor mainly includes the 3280200100040
neutron flux fluctuation factor, the multiple 3280200100041
scattering neutron factor, the self-shielding 3280200100042
correction factor, the gamma-ray self-absorption 3280200100043
correction factor, the time factor for the gamma-ray 3280200100044
measuring and the geometry correction factor. 3280200100045
ERR-ANALYS (ERR-T) Total uncertainty 3280200100046
(ERR-1) The full-energy peak area of the gamma-ray 3280200100047
for U 3280200100048
(ERR-2) The full-energy peak area of the gamma-ray 3280200100049
for AU 3280200100050
(ERR-3) Gamma-ray intensity for U 3280200100051
(ERR-4) The irradiation, cooling and measuring time 3280200100052
for U 3280200100053
(ERR-5) The irradiation, cooling and measuring time 3280200100054
for AU 3280200100055
(ERR-6) The the efficiency ratio 3280200100056
(MONIT-ERR) The cross section of the monitor reaction 3280200100057
STATUS (TABLE) Table 5 of J.Rad.Nucl.Chem.324,277,2020 3280200100058
HISTORY (20210201C) Compiled by Liu Lile (CNDC) 3280200100059
ENDBIB 57 0 3280200100060
COMMON 3 3 3280200100061
ERR-3 ERR-5 ERR-6 3280200100062
PER-CENT PER-CENT PER-CENT 3280200100063
0.551 0.007 0.565 3280200100064
ENDCOMMON 3 0 3280200100065
ENDSUBENT 64 0 3280200199999
SUBENT 32802002 20210201 32003280200200001
BIB 3 6 3280200200002
REACTION (92-U-238(N,G)92-U-239,,SIG) 3280200200003
DECAY-DATA (92-U-239,23.45MIN,DG,43.53,0.0440, 3280200200004
DG,74.66,0.5320) 3280200200005
COMMENT The MONIT-ERR of 2.04 MeV was provided by author 3280200200006
Xiaobing Luo (2021-3-3), it is different from the 3280200200007
value of artilce (1.828) 3280200200008
ENDBIB 6 0 3280200200009
NOCOMMON 0 0 3280200200010
DATA 9 3 3280200200011
EN EN-ERR DATA ERR-T ERR-1 ERR-2 3280200200012
ERR-4 MONIT MONIT-ERR 3280200200013
MEV MEV MB MB PER-CENT PER-CENT 3280200200014
PER-CENT MB PER-CENT 3280200200015
4.38 0.05 5.21 0.22 1.315 0.8933280200200016
0.114 10.19 3.897 3280200200017
3.02 0.49 15.20 0.39 0.769 1.0233280200200018
0.105 24.44 2.042 3280200200019
2.04 0.26 38.87 0.99 1.203 1.0023280200200020
0.092 52.61 1.369 3280200200021
ENDDATA 10 0 3280200200022
ENDSUBENT 21 0 3280200299999
ENDENTRY 2 0 3280299999999