SUBENT 22837001 20130113 22342283700100001
BIB 18 104 2283700100002
TITLE .Measurements of activation cross sections of (n,p) 2283700100003
and (n,alpha) reactions with d-D neutrons in 2283700100004
the energy range 2.1 - 3.1 MeV 2283700100005
AUTHOR (T.Shimizu,H.Sakane,M.Shibata,K.Kawade, T.Nishitani) 2283700100006
INSTITUTE (2JPNNAG) Shimizu, Sakane, Shibata, Kawade, 2283700100007
Dept. of Energy Engineering and Science. 2283700100008
(2JPNJAE) Nishitani, Dept.of Fusion Engineering 2283700100009
REFERENCE (J,ANE,31,975,2004) Main reference, data are given 2283700100010
REL-REF (R,,R.B.Firestone+,B,FIRESTONE,,1996) Decay constants 2283700100011
from the book of R.B.Firestone and V.S.Shirley,1996,2283700100012
Table of Isotopes,8th Edition, John Wiley & Sons,NY 2283700100013
METHOD (ACTIV) 2283700100014
(STTA) Stack-target irradiation 2283700100015
FACILITY (FNS,2JPNJAE) 2283700100016
DETECTOR (HPGE) High-purity well-type germanium detector. 2283700100017
A 22% HPGe detector was also used as a standard 2283700100018
detector, its efficiency curve has been deter- 2283700100019
mined with sourced of 241Am, 133Ba, 60Co, 24Na 2283700100020
and 152Eu standard gamma sources 2283700100021
INC-SOURCE (D-D) Ti-D target bombarded with d+ beam of 350 keV 2283700100022
d+ ion current is 1-2 milli-amperes (most probable 2283700100023
1.2 mA) 2283700100024
INC-SPECT .Angles of irradiation positions with respect to the 2283700100025
incident d+ beam were 0, 45, 70, 95, 120, 155 degrees 2283700100026
which covered neutron energies between 2.1 and 2283700100027
3.1 MeV. Ratio of the 64Zn(n,p) reaction sigma to 2283700100028
that of 115In(n,n') determines well the neutron mean 2283700100029
energy. The typical neutron fluence rate was 5.E+6 2283700100030
to 1.E+8 n/cm2/sec. Maximum energy spread EN-RSL was 2283700100031
300 keV. 2283700100032
.14-MeV neutrons are present due to the admixture of 2283700100033
tritium in Ti-D target, part of 14-MeV neutron was 2283700100034
1.E-3 to 1.E-4 relative to the D-D neutrons 2283700100035
MONITOR ((MONIT)49-IN-115(N,INL)49-IN-115-M,,SIG) 2283700100036
MONIT-REF (,K.Kobayashi+,R,JAERI-1344,2002) JENDL 2283700100037
dosimetry file-99 (DF99) 2283700100038
DECAY-MON (49-IN-115-M,4.486HR,DG,336.240,0.459) 2283700100039
CORRECTION Corrections were made 2283700100040
-for the fractional contribution of the low-energy 2283700100041
neutrons, near 1% 2283700100042
-for the fluctuations of neutron fluence rate during 2283700100043
irradiation - 3% 2283700100044
-for counting loss owing to the summing effect of the 2283700100045
true coincidence and random coincidence - 2% 2283700100046
-for deviation of detection efficiency owing to sample 2283700100047
thickness - 3% 2283700100048
-for self-absorption of Gamma-rays in sample - 2283700100049
negligible 2283700100050
-for the interfering reactions - negligible 2283700100051
-for D-T 14-MeV neutrons from tritium contamination in 2283700100052
the target. In some cases comparable with the 2283700100053
measured cross section 2283700100054
SAMPLE Zinc and indium samples were used as standards. 2283700100055
115In sample is metallic of natural isotopic content 2283700100056
- 95.71% of 115In - weight 150 milligram, thickness 2283700100057
0.2 mm, chemical purity 99.9%, 2283700100058
64Zn sample is metallic of natural isotopic content 2283700100059
- 48.6 % of 64Zn - weight 350 milligram, thickness 2283700100060
0.5 mm, chemical purity 99.99% 2283700100061
Samples were separated isotopes or naturally abundant 2283700100062
materials. Metallic samples in the foil form were 2283700100063
10*10 mm squares 0.2 mm thick. 2283700100064
Samples in powder form were wrapped with the thin car-2283700100065
tridge paper and they were typically 1-2 mm thick, 2283700100066
weight 50-90 mg 2283700100067
Details are given in the proper subents 2283700100068
ERR-ANALYS (ERR-T) Total error, quadratic sum of the experimental2283700100069
(systematic error ERR-SYS) and error of the nuclear 2283700100070
data ERR-1 2283700100071
.ERR-SYS - Total systematic error equal to the sum of 2283700100072
all experimental errors 2283700100073
(ERR-S,2.,40.) Error of counting statistics 2283700100074
(ERR-1) Error of the nuclear data including standard 2283700100075
sigma 115In(n,n') error, Gamma-ray emission 2283700100076
probability error and half-life error 2283700100077
(ERR-2,,0.6) Error from the low-energy neutrons 2283700100078
(ERR-3,1.5,50.) Error from 14-MeV neutrons 2283700100079
(ERR-5,,0.4) Error from fluctuations of neutron fluence2283700100080
(ERR-6,1.5,3.) Error of detector efficiency for 2283700100081
gamma-ray energy between 80 and 300 keV is 3.% 2283700100082
Error of detector efficiency for gamma-ray energy 2283700100083
more than 300 keV is 1.5% 2283700100084
(ERR-8,1.2,10.) Error of detector efficiency 2283700100085
calibration 2283700100086
(ERR-10,,0.6) Error of the true coincidence sum 2283700100087
(ERR-11) Error of the sample weight 2283700100088
(ERR-12,,0.6) Error of sample thickness 2283700100089
(ERR-13,,0.2) Error of the self-absorpt. of gamma-rays 2283700100090
(ERR-15) Error of the Gamma-ray peak evaluation 2283700100091
(ERR-HL) Half-life error 2283700100092
(ERR-EDD) Error of gamma energy 2283700100093
(ERR-IDD) Error of gamma emission probability 2283700100094
(MONIT-ERR) error of the standard cross section 2283700100095
115In(n,n')115In-M 2283700100096
(EN-ERR) Center of energy distribution error arising 2283700100097
from the ambiguity of d+ beam position in the 2283700100098
accelerating tube and inherent error of Zn/In method 2283700100099
STATUS (TABLE) .From table 5 of ANE,31,975 2283700100100
(APRVD) Shimizu, 2005-02-15 2283700100101
HISTORY (20040729C) JOS 2283700100102
(20050218U) SM. Approved by Shimizu, 2005-02-15 2283700100103
(20130113A) SD: DECAY-MON was corrected; MONITOR 2283700100104
reaction Zn-64(n,p)Cu-64 was deleted (not for 2283700100105
neutron flux determination). 2283700100106
ENDBIB 104 0 2283700100107
COMMON 5 3 2283700100108
EN-ERR ERR-11 ERR-15 MONIT-ERR EN-RSL 2283700100109
KEV PER-CENT PER-CENT PER-CENT KEV 2283700100110
50. 0.1 0.5 3. 300. 2283700100111
ENDCOMMON 3 0 2283700100112
ENDSUBENT 111 0 2283700199999
SUBENT 22837013 20040729 00002283701300001
BIB 3 5 2283701300002
REACTION (35-BR-79(N,P)34-SE-79-M,,SIG) 2283701300003
DECAY-DATA (34-SE-79-M,3.91MIN,DG,95.73,0.095) 2283701300004
SAMPLE .Potassium bromide K-Br powder, weight 82 mg, thicknes2283701300005
1.70 mm, chemical purity 99.9%, natural isotopic 2283701300006
abundance - Br-79 content 50.697 2283701300007
ENDBIB 5 0 2283701300008
COMMON 9 6 2283701300009
ERR-1 ERR-HL ERR-EDD ERR-IDD ERR-HL AERR-EDD A2283701300010
ERR-IDD AERR-HL BERR-IDD B 2283701300011
PER-CENT MIN KEV NO-DIM HR KEV 2283701300012
NO-DIM HR NO-DIM 2283701300013
4.5 0.05 0.03 0.003 0.004 0.012 2283701300014
0.001 0.002 0.014 2283701300015
ENDCOMMON 6 0 2283701300016
DATA 4 1 2283701300017
EN DATA ERR-T MONIT A 2283701300018
MEV MB MB MB 2283701300019
3.09 0.48 0.06 339.11 2283701300020
ENDDATA 3 0 2283701300021
ENDSUBENT 20 0 2283701399999