ENTRY 22090 20150819 22432209000000001 SUBENT 22090001 20150819 22432209000100001 BIB 18 62 2209000100002 REFERENCE (C,88MITO,,295,1988) 2209000100003 TITLE Measurement of the cross section for Al-27(n,2n)Al-26 2209000100004 (t1/2=7.16x10**05yr) reaction with activation 2209000100005 technique around 14 MeV. 2209000100006 AUTHOR (S.Iwasaki,J.R.Dumais,K.Sugiyama) 2209000100007 INSTITUTE (2JPNTOH) 2209000100008 FACILITY (NGEN,1USALRL).Rotating Target Neutron Source II 2209000100009 (RTNS-II) at Lawrence Livermore National Laboratory. 2209000100010 Facility was supported by both the USA (Department of 2209000100011 Energy) and Japan (Ministry of Education, Culture and 2209000100012 Science). 2209000100013 REL-REF (I,,D.W.Heikkinen,J,NIM/B,40-41,1162,1989) - facility 2209000100014 description 2209000100015 INC-SOURCE (D-T) A Ti-T target mounted on a 50 cm diameter 2209000100016 rotating target water cooled copper disc. Irradiations2209000100017 were performed for several months. 2209000100018 METHOD (ACTIV) Activation techniques. The measurements were 2209000100019 performed after about one year of cooling time. 2209000100020 DETECTOR (GELI) A 70 cm3 Ge(Li) detector was used for the 2209000100021 activity measurements in Cyclotron Radio Center 2209000100022 (Tohoki Univ.). The samples were placed at a distance 2209000100023 of 20 mm from the detector. The measurement times were 2209000100024 about 75 to 120 hours. The iron dosimetry foils were 2209000100025 measured in the same detector system. 2209000100026 (HPGE) The zirconium-niobium foils were measured at 2209000100027 RTNS-II using a 80 cm3 high purity germanium detector 2209000100028 in 2 or 3 days after taking out the foils. 2209000100029 MONITOR (26-FE-54(N,P)25-MN-54,,SIG) 2209000100030 MONIT-REF (,,3,ENDF/B-V,,1978) 2209000100031 DECAY-MON (25-MN-54,312.2D) 2209000100032 SAMPLE .Aluminium disc samples of 2 cm diameter and 0.5 cm 2209000100033 thickness were machined from high purity metal ingot. 2209000100034 21 Samples were divided into 7 groups by three discs 2209000100035 and fixed at a distance of 12 cm from the source, 2209000100036 covering angles from 25 to 85 degrees with respect to 2209000100037 the incident deuteron beam. 21 iron dosimetry foils 2209000100038 were put on the surface of each sample disc to 2209000100039 evaluate the neutron fluence. In addition, 7 sets of 2209000100040 zirconium-niobium foils were attached in front of each2209000100041 sample set to measure the average energies of the in- 2209000100042 cident 14 MeV neutrons. 2209000100043 .The average neutron fluence was about 5.0E+16 n/cm2. 2209000100044 CORRECTION .Data were corrected for fluctuations during irradi- 2209000100045 ation, background from scattered neutrons, sum-coin- 2209000100046 cidence loss effects, gamma-ray self-absorption, 2209000100047 finite solid angle in the gamma-ray measurements and 2209000100048 for the effect of large variation of the energy width 2209000100049 of the source neutrons with the emission angle. 2209000100050 ERR-ANALYS (ERR-T) The main error sources are: 2209000100051 (ERR-S,1.3,3.2) Statistical errors of peak areas 2209000100052 (ERR-1) Uncertainty in Ge(Li) efficiency calibration 2209000100053 (ERR-2) Uncertainty in cross section of 2209000100054 dosimetry reaction 2209000100055 (ERR-3) uncertainties in the corrections 2209000100056 COMMENT .Hitherto, the measurement has finished for 14 samples.2209000100057 STATUS (TABLE) Data taken from Tbl.1 of 88MITO,,295 2209000100058 HISTORY (19881127C) N.O. 2209000100059 (19890530U) IF. Page added to the main reference 2209000100060 (20150819A) SD:Updated to new date formats,lower case. 2209000100061 Corrections according last EXFOR rules and Dict. 2209000100062 Small correction in REACTION code in Subent 2. 2209000100063 ERR-ANALYS updated. REL-REF added. 2209000100064 ENDBIB 62 0 2209000100065 COMMON 3 3 2209000100066 ERR-1 ERR-2 ERR-3 2209000100067 PER-CENT PER-CENT PER-CENT 2209000100068 2.5 5.0 5.0 2209000100069 ENDCOMMON 3 0 2209000100070 ENDSUBENT 69 0 2209000199999 SUBENT 22090002 20150819 22432209000200001 BIB 3 4 2209000200002 REACTION (13-AL-27(N,2N)13-AL-26-G,,SIG) 2209000200003 DECAY-DATA (13-AL-26-G,7.16E+05YR,DG,1809.) 2209000200004 HISTORY (20150819A) SD: SF4-Al-26 -> Al-26-g in REACTION code. 2209000200005 DATA-ERR -> ERR-T. 2209000200006 ENDBIB 4 0 2209000200007 NOCOMMON 0 0 2209000200008 DATA 4 7 2209000200009 EN EN-RSL DATA ERR-T 2209000200010 MEV MEV MB MB 2209000200011 14.08 0.04 11.6 1.3 2209000200012 14.16 0.05 14.3 1.6 2209000200013 14.32 0.07 21.4 2.4 2209000200014 14.37 0.07 27.8 3.0 2209000200015 14.47 0.08 32.0 3.5 2209000200016 14.56 0.10 36.1 3.9 2209000200017 14.68 0.11 40.6 4.4 2209000200018 ENDDATA 9 0 2209000200019 ENDSUBENT 18 0 2209000299999 ENDENTRY 2 0 2209099999999