ENTRY 22989 20130523 22362298900000001
SUBENT 22989001 20130523 22362298900100001
BIB 14 33 2298900100002
TITLE Measurement of thermal neutron cross section and 2298900100003
resonance integral for the 170Er(n,g)171Er reaction 2298900100004
by using a 55Mn monitor 2298900100005
AUTHOR (H.Yucel, M.G.Budak, M.Karadag) 2298900100006
INSTITUTE (2TUKTUK) Turkish Atomic Energy Authority (TAEK), 2298900100007
Tandogan-Ankara 2298900100008
(2TUKGZU) 2298900100009
REFERENCE (J,PR/C,76,034610,2007) 2298900100010
INC-SOURCE (AM-BE) 241Am-Be source 2298900100011
INC-SPECT thermal flux=(1.5+/-0.2)E+04 neutrons/cm2/s, 2298900100012
epithermal flux=(1.4+/-0.1)E+03 neutrons/cm2/s, 2298900100013
epithermal spectrum shape factor alpha=0.083+/-0.016 2298900100014
REL-REF (N,,H.Yucel+,J,ANE,31,681,2004) 2298900100015
Description on Am-Be neutron irradiator and 2298900100016
determination of epithermal spectrum shape factor 2298900100017
SAMPLE Cd filter: Cylinder box with 1 mm thick, 10 mm diam., 2298900100018
20 mm height. 2298900100019
MnO2 and Er2O3 powders (analytical grade) filled in 2298900100020
polystyrene tubes with 1 mm wall thick and 2298900100021
6.5 mm internal diam. 2298900100022
Five samples for Cd-covered irradiation, and five 2298900100023
samples for bare irradiation. 2298900100024
METHOD (ACTIV) Irradiated for 3 to 5 half-lives, cooling time 2298900100025
chosen to minimize dead time losses and eliminate the 2298900100026
possible contribution of 843.8 keV gamma-ray from 27Mg2298900100027
(9.45 min) to the 846.7 keV peak of 56Mn 2298900100028
(GSPEC) Counted for 15 to 45 hrs (171Er), for 2.5 to 2298900100029
10 hrs (56Mn) 2298900100030
ANALYSIS Westcott factor g=1 assumed for both Er and Mn 2298900100031
DECAY-DATA (68-ER-171,7.516HR,DG,308.291,0.64) 2298900100032
DECAY-MON (25-MN-56,2.5789HR,DG,846.754,0.989) 2298900100033
STATUS (APRVD) Haluk Yucel (2013-05-24) 2298900100034
HISTORY (20130523C) On 2298900100035
ENDBIB 33 0 2298900100036
NOCOMMON 0 0 2298900100037
ENDSUBENT 36 0 2298900199999
SUBENT 22989002 20130523 22362298900200001
BIB 4 19 2298900200002
REACTION (68-ER-170(N,G)68-ER-171,,SIG) 2298900200003
MONITOR (25-MN-55(N,G)25-MN-56,,SIG) 2298900200004
ERR-ANALYS (ERR-T) Total uncertainty (5.4% for Er, 4.2% for Mn) 2298900200005
(ERR-1) Counting statistics for Er (0.83%) 2298900200006
(ERR-2) Counting statistics for Mn (0.39%) 2298900200007
(ERR-3) Detection efficiency for Er (2.5%) 2298900200008
(ERR-4) Detection efficiency for Mn (2.8%) 2298900200009
(ERR-5) Sample mass for Er (0.01%) 2298900200010
(ERR-6) Sample mass for Mn (0.01%) 2298900200011
(ERR-7) Half-life for Er (0.03%) 2298900200012
(ERR-8) Half-life for Mn (0.004%) 2298900200013
(ERR-9) Isotopic abundance for Er (0.24%) 2298900200014
(ERR-10) Gamma-ray intensity for Er (4.7%) 2298900200015
(ERR-11) Gamma-ray intensity for Mn (3.0%) 2298900200016
(ERR-12) Thermal neutron self-shielding for Er (0.5%) 2298900200017
(ERR-13) Thermal neutron self-shielding for Mn (0.1%) 2298900200018
(ERR-14) Cadmium transmission factor for Er (0.1%) 2298900200019
(MONIT-ERR) 55Mn(n,g) thermal cross section (0.75%) 2298900200020
STATUS (TABLE) Table V of Phys.Rev.C76(2007)034610 2298900200021
ENDBIB 19 0 2298900200022
COMMON 14 9 2298900200023
ERR-1 ERR-2 ERR-3 ERR-4 ERR-5 ERR-6 2298900200024
ERR-7 ERR-8 ERR-9 ERR-10 ERR-11 ERR-12 2298900200025
ERR-13 ERR-14 2298900200026
PER-CENT PER-CENT PER-CENT PER-CENT PER-CENT PER-CENT 2298900200027
PER-CENT PER-CENT PER-CENT PER-CENT PER-CENT PER-CENT 2298900200028
PER-CENT PER-CENT 2298900200029
0.83 0.39 2.5 2.8 0.01 0.01 2298900200030
0.03 0.004 0.24 4.7 3.0 0.5 2298900200031
0.1 0.1 2298900200032
ENDCOMMON 9 0 2298900200033
DATA 5 1 2298900200034
EN DATA ERR-T MONIT MONIT-ERR 2298900200035
EV B B B B 2298900200036
0.0253 8.00 0.56 13.3 0.1 2298900200037
ENDDATA 3 0 2298900200038
ENDSUBENT 37 0 2298900299999
SUBENT 22989003 20130523 22362298900300001
BIB 4 21 2298900300002
REACTION (68-ER-170(N,G)68-ER-171,,RI) 2298900300003
MONITOR (25-MN-55(N,G)25-MN-56,,RI) 2298900300004
ERR-ANALYS Sensitivities to uncertainty in the resonance integral 2298900300005
are also available in the article. The partial 2298900300006
uncertainty in the resonance integral for each 2298900300007
source of uncertainty is listed below: 2298900300008
(ERR-T) Total uncertainty (8.8%)2298900300009
(ERR-1) alpha-shape parameter (1.2%)2298900300010
(ERR-2) Cd cut-off energy (0.45%)2298900300011
(ERR-3) Cd ratio for Mn (1.8%)2298900300012
(ERR-4) Cd ratio for Er (2.9%)2298900300013
(ERR-5) Thermal self-shielding factor for Mn (0.10%)2298900300014
(ERR-6) Thermal self-shielding factor for Er (0.50%)2298900300015
(ERR-7) Epithermal self-shielding factor for Mn(0.20%)2298900300016
(ERR-8) Epithermal self-shielding factor for Er(2.30%)2298900300017
(ERR-9) 55Mn(n,g) thermal cross section (1.2%)2298900300018
(ERR-10) 170Er(n,g) thermal cross section (6.9%)2298900300019
(ERR-11) Effective resonance energy for Mn (0.44%)2298900300020
(ERR-12) Effective resonance energy for Er (0.16%)2298900300021
(MONIT-ERR) 55Mn(n,g) resonance integral (3.3%)2298900300022
STATUS (TABLE) Table V of Phys.Rev.C76(2007)034610 2298900300023
ENDBIB 21 0 2298900300024
COMMON 12 6 2298900300025
ERR-1 ERR-2 ERR-3 ERR-4 ERR-5 ERR-6 2298900300026
ERR-7 ERR-8 ERR-9 ERR-10 ERR-11 ERR-12 2298900300027
PER-CENT PER-CENT PER-CENT PER-CENT PER-CENT PER-CENT 2298900300028
PER-CENT PER-CENT PER-CENT PER-CENT PER-CENT PER-CENT 2298900300029
1.2 0.45 1.8 2.9 0.10 0.50 2298900300030
0.20 2.30 1.2 6.9 0.44 0.16 2298900300031
ENDCOMMON 6 0 2298900300032
DATA 5 1 2298900300033
EN-MIN DATA ERR-T MONIT MONIT-ERR 2298900300034
EV B B B B 2298900300035
0.55 44.5 4.0 14.0 0.3 2298900300036
ENDDATA 3 0 2298900300037
ENDSUBENT 36 0 2298900399999
ENDENTRY 3 0 2298999999999