ENTRY 32783 20191010 31923278300000001
SUBENT 32783001 20191010 31923278300100001
BIB 12 45 3278300100002
TITLE Measurement of the cross sections of the 25Mg(n,a)22Ne 3278300100003
reaction in the 4-6 MeV region 3278300100004
AUTHOR (Yu.M.Gledenov,M.V.Sedysheva,G.Khuukhenkhuu, 3278300100005
Huaiyong Bai,Haoyu Jiang,Yi Lu,Zengqi Cui, 3278300100006
Jinxiang Chen,Guohui Zhang) 3278300100007
INSTITUTE (4ZZZDUB,3MGLNUM,3CPRBJG) 3278300100008
REFERENCE (J,PR/C,98,034605,2018) 3278300100009
#doi:10.1103/PhysRevC.98.034605 3278300100010
FACILITY (VDG,3CPRBJG) 4.5 MV Van de Graaff Accelerator 3278300100011
INC-SOURCE (D-D) The neutrons were generated using deuteron beam 3278300100012
to bombard a deuterium gas target in pressure 0.30 3278300100013
MPa, the intensity of the deuteron beam was about 2.5 3278300100014
uA and the length of the target gas cell was 2.0 cm. 3278300100015
The deuterium gas target was separated from the 3278300100016
vacuum tube of the accelerator by a molybdenum 3278300100017
membrane 5.0 um in thickness. The gas target was 3278300100018
cooled by a compressed air jet. 3278300100019
DETECTOR (IOCH) A twin-gridded ionization chamber was used as 3278300100020
the charged particle detector. The distances from 3278300100021
cathode to grid and anode to grid were 6.1 and 1.5 3278300100022
cm, respectively. The working gas Kr+CO2(2.7%) 3278300100023
pressures were 0.052 MPa for 4.0-5.0 MeV region and 3278300100024
0.068 MPa for 5.5-6.0 MeV region, respectively. 3278300100025
(BF3) A BF3 long counter located at 0 degree with 3278300100026
respect to the deuteron beam axis was used to 3278300100027
monitor the relative neutron fluence. The outer 3278300100028
radius of the BF3 long counter was 27 mm and its 3278300100029
length was 300 mm. The BF3 long counter was 3278300100030
surrounded by a moderator with radius of 350 mm and 3278300100031
length of 400 mm, and a cadmium plate 0.5 mm in 3278300100032
thickness was mounted at the front face of the 3278300100033
counter. The distance between the front face of the 3278300100034
BF3 long counter and the center of the gas target was 3278300100035
about 3.0 m. 3278300100036
SAMPLE (12-MG-25,ENR=0.986) The material of the 25Mg sample 3278300100037
is 25MgO. The sample radius was 22.0 mm. The 25Mg 3278300100038
nucleus number of forward and backward direction were 3278300100039
1.623 x E20 (+-5%) and 1.580 x E20 (+- 5%), 3278300100040
respectively. The tantalum backing layers with 0.1 mm 3278300100041
thick were faced with each other. 3278300100042
MONITOR (92-U-238(N,F),,SIG) 3278300100043
Neutron Cross-section Standards (2006) www-nds.iaea.org3278300100044
PART-DET (A) 3278300100045
STATUS (TABLE) TABLE II of Phys.Rev.C,98,034605,2018. 3278300100046
HISTORY (20191010C) Compiled by WANG Jimin (CNDC). 3278300100047
ENDBIB 45 0 3278300100048
NOCOMMON 0 0 3278300100049
ENDSUBENT 48 0 3278300199999
SUBENT 32783002 20191010 31923278300200001
BIB 2 16 3278300200002
REACTION (12-MG-25(N,A)10-NE-22,,SIG) 3278300200003
ERR-ANALYS (ERR-T) The total uncertainty, 7.4-20.8%. 3278300200004
(ERR-1) The number of the 238U nuclei 0.5% 3278300200005
(ERR-2,3.5,3.6) The number of the 25Mg nuclei 3278300200006
(ERR-3,2.3,5.8) The ratio of the count of the BF3 3278300200007
long counter during the measurement of the 238U 3278300200008
sample over that during the measurement of the 3278300200009
25MgO samples. 3278300200010
(ERR-4,5.9,12.9,U) The detected counts of alpha events.3278300200011
(ERR-5,0.5,0.6,U) The detected counts of fission 3278300200012
events. 3278300200013
(ERR-6,1.0,1.1) The detection efficiency of fission 3278300200014
events. 3278300200015
(ERR-7,0.5,14.7) The detection efficiency of alpha 3278300200016
events. 3278300200017
(MONIT-ERR,0.7,0.9) 238U(n,f) cross sections. 3278300200018
ENDBIB 16 0 3278300200019
COMMON 1 3 3278300200020
ERR-1 3278300200021
PER-CENT 3278300200022
0.5 3278300200023
ENDCOMMON 3 0 3278300200024
DATA 4 5 3278300200025
EN EN-RSL-HW DATA ERR-T 3278300200026
MEV MEV MB MB 3278300200027
4.0 0.2 22.32 3.03 3278300200028
4.5 0.2 26.71 2.62 3278300200029
5.0 0.1 29.31 6.09 3278300200030
5.5 0.1 37.47 2.79 3278300200031
6.0 0.1 39.46 3.18 3278300200032
ENDDATA 7 0 3278300200033
ENDSUBENT 32 0 3278300299999
SUBENT 32783003 20191010 31923278300300001
BIB 2 16 3278300300002
REACTION (12-MG-25(N,A)10-NE-22,PAR,SIG) 3278300300003
ERR-ANALYS (ERR-T) The total uncertainty, 7.1-17.8%. 3278300300004
(ERR-1) The number of the 238U nuclei 0.5% 3278300300005
(ERR-2,3.5,3.6) The number of the 25Mg nuclei 3278300300006
(ERR-3,2.3,5.8) The ratio of the count of the BF3 3278300300007
long counter during the measurement of the 238U 3278300300008
sample over that during the measurement of the 3278300300009
25MgO samples. 3278300300010
(ERR-4,5.5,9.5,U) The detected counts of alpha events. 3278300300011
(ERR-5,0.5,0.6,U) The detected counts of fission 3278300300012
events. 3278300300013
(ERR-6,1.0,1.1) The detection efficiency of fission 3278300300014
events. 3278300300015
(ERR-7,0.5,14.7) The detection efficiency of alpha 3278300300016
events. 3278300300017
(MONIT-ERR,0.7,0.9) 238U(n,f) cross sections. 3278300300018
ENDBIB 16 0 3278300300019
COMMON 2 3 3278300300020
E-LVL ERR-1 3278300300021
KEV PER-CENT 3278300300022
0.0 0.5 3278300300023
ENDCOMMON 3 0 3278300300024
DATA 4 5 3278300300025
EN EN-RSL-HW DATA ERR-T 3278300300026
MEV MEV MB MB 3278300300027
4.0 0.2 5.82 0.86 3278300300028
4.5 0.2 9.37 1.06 3278300300029
5.0 0.1 12.35 2.19 3278300300030
5.5 0.1 10.53 0.75 3278300300031
6.0 0.1 13.78 1.24 3278300300032
ENDDATA 7 0 3278300300033
ENDSUBENT 32 0 3278300399999
ENDENTRY 3 0 3278399999999