ENTRY 20419 20130501 22362041900000001 SUBENT 20419001 20130501 22362041900100001 BIB 16 72 2041900100002 TITLE Au197(n,g)Au198 cross-section measurements between 0.2 2041900100003 and 3.0 MeV 2041900100004 AUTHOR (A.Paulsen, R.Widera, H.Liskien) 2041900100005 INSTITUTE (2ZZZGEL) 2041900100006 REFERENCE (J,AKE,26,80,1975) 2041900100007 ((P,INDC(EUR)-9,22,1976)=(P,NEANDC(E)-172,(3),22,1976))2041900100008 No data given 2041900100009 ((P,INDC(EUR)-8,26,1975)=(P,NEANDC(E)-162,(3),26,1975))2041900100010 No data given 2041900100011 ((P,INDC(EUR)-7,207,1974)=(P,NEANDC(E)-161,207,1974)) 2041900100012 Abstract only 2041900100013 ((P,INDC(EUR)-5,75,1973)=(P,EANDC(E)-157,(1),75,1973)) 2041900100014 No data given 2041900100015 FACILITY (VDG,2ZZZGEL) 2041900100016 INC-SOURCE (P-LI7) En = 200 and 300 keV 2041900100017 (P-T) En > 0.3 MeV 2041900100018 SAMPLE Au sheets of 38 mm diam. and 0.5 mm thick mounted at 2041900100019 about 74 mm from the neutron source. 2041900100020 METHOD (ACTIV) Irradiation lasted typically 7 hrs. 2041900100021 MONITOR (1-H-1(N,EL)1-H-1,,SIG) 2041900100022 1200 Torr CH4 for En>0.5 MeV and 580 Torr H2+20 Torr 2041900100023 CH4 for En < 500 keV. 2041900100024 DETECTOR (HPGE) Photopeak efficiency calibration based on 4-pi 2041900100025 beta-gamma coincidence. 2041900100026 DECAY-DATA (79-AU-198-G,2.67D,DG,412.) 2041900100027 Measurement assumes that all neutron capture events 2041900100028 populate the ground state. 2041900100029 Measurements for 2.5 half-lives indicate a population 2041900100030 of 0.2+/-0.3% for the metastable state at 812 keV. 2041900100031 CORRECTION Corrected for 2041900100032 -Neutron attenuation in sample (1.5%)2041900100033 -Sample/neutron detector solid angle difference (6.0%)2041900100034 -Sample/calibration source absorption difference(0.3%)2041900100035 -Difference depth activity distribution of 2041900100036 calibration source (0.3%)2041900100037 -Difference radial activity distribution of 2041900100038 calibration source (0.5%)2041900100039 -Thermal neutrons (2.5%)2041900100040 -Neutron inscattering (2.0%)2041900100041 -Chemical purity (0.01%)2041900100042 -Neutron survival factor (3.0%)2041900100043 -Neutron flux variations in time (0.05%)2041900100044 ERR-ANALYS (ERR-T) Total uncertainty 2041900100045 (ERR-SYS) Systematic component including 2041900100046 -Efficiency of activity detector (1.5%)2041900100047 -Neutron fluence at recoil detector distance (2.8%)2041900100048 -Neutron attenuation in sample (0.3%)2041900100049 -Effective sample distance (1.0%)2041900100050 -Sample/neutron detector solid angle difference (0.5%)2041900100051 -Number of sample atoms (0.1%)2041900100052 -Decay constant (0.1%)2041900100053 -Sample/calibration source absorption difference(0.1%)2041900100054 -Difference depth activity distribution of 2041900100055 calibration source (0.1%)2041900100056 -Difference radial activity distribution of 2041900100057 calibration source (0.2%)2041900100058 -Thermal neutrons (2.5%)2041900100059 -Neutron inscattering (0.3%)2041900100060 -Chemical purity (0.01%)2041900100061 -Neutron survival factor (0.1%)2041900100062 -Neutron flux variations in time (0.02%)2041900100063 (ERR-S) Random component including 2041900100064 -Statistics of activity determination (0.5%)2041900100065 -Neutron fluence at recoil detector distance (1.0%)2041900100066 -Effective sample distance (0.3%)2041900100067 COMMENT At any neutron energy four or five determinations made.2041900100068 STATUS (TABLE) Table 2 of Atomkernenergie 26(1975)80 2041900100069 HISTORY (19750729C) 2041900100070 (19750925E) 2041900100071 (19801108A) STANDARD and ERR-ANALYS changed. 2041900100072 (19801204E) 2041900100073 (20130501A) On. BIB updated 2041900100074 ENDBIB 72 0 2041900100075 COMMON 2 3 2041900100076 ERR-S ERR-SYS 2041900100077 PER-CENT PER-CENT 2041900100078 1.2 4.2 2041900100079 ENDCOMMON 3 0 2041900100080 ENDSUBENT 79 0 2041900199999 SUBENT 20419002 20130501 22362041900200001 BIB 4 8 2041900200002 REACTION (79-AU-197(N,G)79-AU-198-G,,SIG) 2041900200003 DETECTOR (PROPC) Neutron flux below 2.5 MeV 2041900200004 STATUS (COREL,20419003) flux from proton recoil telescope 2041900200005 HISTORY (19750729C) 2041900200006 (19750925E) 2041900200007 (19801108A) REACTION re-coded 2041900200008 (19801204E) 2041900200009 (20130501A) On. Counter telescope data moved to 003 2041900200010 ENDBIB 8 0 2041900200011 NOCOMMON 0 0 2041900200012 DATA 5 14 2041900200013 EN EN-ERR DATA ERR-T ERR-S 2041900200014 KEV KEV MB MB MB 2041900200015 200. 1.7 271.1 11.6 2.2 2041900200016 300. 2.4 207.5 9.3 3.3 2041900200017 400. 3.2 179.7 8.0 2.8 2041900200018 500. 3.8 152.2 6.6 1.8 2041900200019 625. 4.7 123.9 5.4 1.6 2041900200020 737. 5.5 109.2 4.6 0.6 2041900200021 875. 6.4 91.8 4.2 1.5 2041900200022 985. 7.2 92.7 4.0 0.7 2041900200023 1232. 9.0 82.5 3.5 0.7 2041900200024 1500. 10.9 76.0 3.2 0.5 2041900200025 1750. 12.6 67.5 3.2 1.4 2041900200026 2000. 14.0 56.3 2.4 0.4 2041900200027 2250. 15.8 43.8 1.9 0.3 2041900200028 2500. 17.5 36.0 1.6 0.6 2041900200029 ENDDATA 16 0 2041900200030 ENDSUBENT 29 0 2041900299999 SUBENT 20419003 20130501 22362041900300001 BIB 4 4 2041900300002 REACTION (79-AU-197(N,G)79-AU-198-G,,SIG) 2041900300003 DETECTOR (TELES) Neutron flux between 2 and 3 MeV 2041900300004 STATUS (COREL,20419002) flux from proton proportional counter 2041900300005 HISTORY (20130501C) On 2041900300006 ENDBIB 4 0 2041900300007 NOCOMMON 0 0 2041900300008 DATA 5 5 2041900300009 EN EN-ERR DATA ERR-T ERR-S 2041900300010 KEV KEV MB MB MB 2041900300011 2000. 14.0 55.8 2.4 0.3 2041900300012 2250. 15.8 42.9 2.0 0.8 2041900300013 2500. 17.5 36.0 1.5 0.1 2041900300014 2750. 19.3 29.5 1.3 0.3 2041900300015 3000. 21.0 25.0 1.1 0.2 2041900300016 ENDDATA 7 0 2041900300017 ENDSUBENT 16 0 2041900399999 ENDENTRY 3 0 2041999999999