ENTRY 21829 20110227 22262182900000001 SUBENT 21829001 20110227 22262182900100001 BIB 12 49 2182900100002 INSTITUTE (2JPNJAE) Experimental site. K.S.,H.G. 2182900100003 (2JPNKTO) S.Y.,K.K.,I.K. 2182900100004 REFERENCE (J,NST,19,(10),775,198210) 2182900100005 AUTHOR (K.Sakurai,H.Gotoh,S.Yamamoto,K.Kobayashi,I.Kimura) 2182900100006 TITLE -Cross section measurement for Hg-199(n,n')Hg-199-m 2182900100007 reaction from 0.78 to 6.3 MeV. 2182900100008 FACILITY (VDG,2JPNJAE) 5.5 MV Van de Graaff 2182900100009 INC-SOURCE (D-D) A deuterium target supplied by the 2182900100010 Radiochemical Centre was used. By cooling the target 2182900100011 with a jet of air, no appreciable decrease in neutron 2182900100012 yield was observed for 20 hr with a beam current up 2182900100013 to about 2 micro-A in a 20 mm2 spot. 2182900100014 (P-LI7) A Li target was prepared by the vacuum 2182900100015 evaporation method of natural lithium fluoride LiF 2182900100016 onto a Ti backing foil. The thickness, of the lithium 2182900100017 fluoride layer is about 500 mu-g/cm2 which corresponds2182900100018 to an energy loss of about 60 keV for 2 MeV protons. 2182900100019 SAMPLE .Mercury sulphate powder pressed into discs of 2182900100020 20 milli-m diameter and about 3 milli-m thick, 2182900100021 weighed to 1.0 milli-g. 2182900100022 .Samples sandwiched by indium foils of the same 2182900100023 diameter and of 0.5 milli-m thickness. 2182900100024 METHOD (ACTIV) Activation techniques. 2182900100025 DETECTOR (HPGE) A high purity germanium detector of diameter 2182900100026 42.5 milli-m and length 59.9 milli-m used to measure 2182900100027 gamma activity. 2182900100028 (TELES,SIBAR,CSICR) A proton recoil telescope 2182900100029 consisting of a polythene radiator in front of a 2182900100030 proton detector: 2182900100031 * above 5 MeV neutron energy a silicon surface 2182900100032 barrier detector 2182900100033 * below 5 MeV a CsI(Tl) detector. 2182900100034 PART-DET (DG) Decay gammas 2182900100035 (N) neutrons 2182900100036 CORRECTION .Self absorption of the gamma rays in the Hg sample 2182900100037 were calculated by a monte carlo method. The self 2182900100038 absorption in the indium foils was less than 1%. 2182900100039 HISTORY (19830315C) A.P.T. 2182900100040 (19830322E) 2182900100041 (19830610A) BN. Subent 002 rewritten 2182900100042 DECAY-DATA added in Subent 003 2182900100043 (19830801E) 2182900100044 (19840106U) A.P.T. Japan code changed to JPN 2182900100045 (19840106E) 2182900100046 (20110227A) SD:Updated to new date formats,lower case. 2182900100047 corrected according to last EXFOR rules and Dict. 2182900100048 Author's name corrected: K.Sakuri => K.Sakurai 2182900100049 ERR-ANALYS moved to subent 002 and partial 2182900100050 uncertainties added to COMMON 2182900100051 ENDBIB 49 0 2182900100052 NOCOMMON 0 0 2182900100053 ENDSUBENT 52 0 2182900199999 SUBENT 21829002 20110227 22262182900200001 BIB 11 60 2182900200002 REACTION 1(80-HG-199(N,INL)80-HG-199-M,,SIG) 2182900200003 2(80-HG-199(N,INL)80-HG-199-M,,SIG) 2182900200004 3(80-HG-199(N,INL)80-HG-199-M,,SIG) 2182900200005 4(80-HG-199(N,INL)80-HG-199-M,,SIG) 2182900200006 DECAY-DATA1(80-HG-199-M,42.6MIN,DG,158.,0.523) 2182900200007 2(80-HG-199-M,42.6MIN,DG,374.,0.123) 2182900200008 3(80-HG-199-M,42.6MIN,DG,158.,0.459) 2182900200009 4(80-HG-199-M,42.6MIN,DG,374.,0.123) 2182900200010 .data taken from Lederer+, 'Table of Isotopes', 2182900200011 7th edition (1978) 2182900200012 REL-REF (R,,D.M.Lederer+,B,LEDERER-7,,1978) 2182900200013 MONITOR 1(49-IN-115(N,INL)49-IN-115-M,,SIG) 2182900200014 2(49-IN-115(N,INL)49-IN-115-M,,SIG) 2182900200015 3.recoil protons 2182900200016 4.recoil protons 2182900200017 MONIT-REF (,,3,ENDF/B-V,6436,1979) .data were taken from the 2182900200018 ENDF/B-V Dosimetry file 2182900200019 DECAY-MON 1(49-IN-115-M,4.486HR,DG,336.,0.459) 2182900200020 2(49-IN-115-M,4.486HR,DG,336.,0.459) 2182900200021 COMMENT .The different values obtained for the cross 2182900200022 section agree within error limits except at 2182900200023 0.78 MeV neutron energy. In this case the 2182900200024 measurements normalised by the indium monitor 2182900200025 are more reliable, since an insufficient 2182900200026 number of recoil protons were counted. 2182900200027 FLAG (1.) D-D neutron source used. 2182900200028 (2.) P-Li7 neutron source used. 2182900200029 ERR-ANALYS (ERR-T) Total error 2182900200030 (ERR-1) Ge detector efficiency 3% 2182900200031 (DATA-ERR2) others 2% 2182900200032 For experiments with In-115(n,n')In-115-m monitor: 2182900200033 1(MONIT-ERR) In-115(n,n')In-115-m cross section 10% 2182900200034 (ENDF/B-V covariance file) 2182900200035 (ERR-S,2.1,14.3) counting statistics for 2.1 - 14.3% 2182900200036 Hg-199-m decay gammas. 2182900200037 (DATA-ERR1,0.6,6.2) Counting statistics for 0.6 - 6.2%2182900200038 In-115-m decay gammas 2182900200039 2(MONIT-ERR) In-115(n,n')In-115-m cross section 10% 2182900200040 (ENDF/B-V covariance file) 2182900200041 (ERR-S,2.1,14.3) counting statistics for 2.1 - 14.3% 2182900200042 Hg-199-m decay gammas. 2182900200043 (DATA-ERR1,0.6,6.2) Counting statistics for 0.6 - 6.2%2182900200044 In-115-m decay gammas 2182900200045 For experiments with proton recoil monitor: 2182900200046 3(ERR-S,1.5,4.3) counting statistics for 1.5 - 4.2182900200047 Hg-199-m decay gammas 2182900200048 (DATA-ERR1,2.0,4.8) statistics of proton 2182900200049 counting 2.0 - 4.8% 2182900200050 4(ERR-S,1.5,4.3) counting statistics for 1.5 - 4.2182900200051 Hg-199-m decay gammas 2182900200052 (DATA-ERR1,2.0,4.8) statistics of proton 2182900200053 counting 2.0 - 4.8% 2182900200054 STATUS (TABLE) Table 1 of NST,19,775,1982 2182900200055 HISTORY (19830315C) A.P.T. 2182900200056 (19830322E) 2182900200057 (19830610A) BN. REACTION keyword changed 2182900200058 MONITOR,DECAY-MON and DECAY-DATA added. 2182900200059 (19830801E) 2182900200060 (20110227A) SD: partial uncertainties added to COMMON 2182900200061 REL-REF and MONIT-REF added 2182900200062 ENDBIB 60 0 2182900200063 COMMON 4 3 2182900200064 ERR-1 DATA-ERR2 MONIT-ERR 1MONIT-ERR 2 2182900200065 PER-CENT PER-CENT PER-CENT PER-CENT 2182900200066 3. 2. 10. 10. 2182900200067 ENDCOMMON 3 0 2182900200068 DATA 12 10 2182900200069 EN +EN-ERR -EN-ERR DATA 1ERR-T 1DATA 22182900200070 ERR-T 2DATA 3ERR-T 3DATA 4ERR-T 4FLAG 2182900200071 MEV MEV MEV MB MB MB 2182900200072 MB MB MB MB MB NO-DIM 2182900200073 7.8400E-01 3.1000E-02 3.1000E-02 3.3800E+01 3.7000E+00 3.1000E+012182900200074 3.6000E+00 5.9900E+01 4.2000E+00 5.2300E+01 4.2000E+00 2.0000E+002182900200075 9.9400E-01 3.9000E-02 3.9000E-02 2182900200076 7.7700E+01 4.9000E+00 7.3000E+01 5.2000E+00 2.0000E+002182900200077 1.2000E+00 4.0000E-02 4.0000E-02 9.6300E+01 1.0600E+01 9.0900E+012182900200078 1.0000E+01 1.0500E+02 6.0000E+00 9.9600E+01 5.6000E+00 2.0000E+002182900200079 1.7900E+00 1.4700E-01 9.7000E-02 2.0100E+02 2.6000E+01 2.0600E+022182900200080 3.1000E+01 1.0000E+002182900200081 1.8200E+00 5.0000E-02 5.0000E-02 2.4200E+02 2.7000E+01 2.2500E+022182900200082 2.4000E+01 2.7000E+02 1.4000E+01 2.5000E+02 1.4000E+01 2.0000E+002182900200083 2.2700E+00 2.9500E-01 2.3100E-01 3.2700E+02 5.1000E+01 2182900200084 1.0000E+002182900200085 3.0700E+00 4.1000E-01 3.6100E-01 4.1300E+02 6.1000E+01 4.8900E+022182900200086 9.2000E+01 1.0000E+002182900200087 3.2500E+00 3.6000E-01 3.2400E-01 4.1200E+02 5.3000E+01 4.0300E+022182900200088 6.6000E+01 1.0000E+002182900200089 4.9200E+00 9.5000E-02 9.5000E-02 6.5000E+02 7.2000E+01 6.0000E+022182900200090 7.0000E+01 6.6200E+02 3.6000E+01 6.1100E+02 3.9000E+01 1.0000E+002182900200091 6.2700E+00 6.5000E-02 6.5000E-02 6.5300E+02 7.2000E+01 6.8600E+022182900200092 8.0000E+01 1.0000E+002182900200093 ENDDATA 24 0 2182900200094 ENDSUBENT 93 0 2182900299999 SUBENT 21829003 20110227 22262182900300001 BIB 7 25 2182900300002 REACTION (80-HG-199(N,INL)80-HG-199-M,,SIG,,FIS,DERIV) 2182900300003 derived from pointwise data integration 2182900300004 INC-SPECT A Watt-type fission spectrum. 2182900300005 ANALYSIS .The pointwise data in Subent 2 (excluding 2182900300006 those at 0.78 MeV neutron energy normalised by 2182900300007 the proton recoil monitor) together with 2182900300008 data from A.K.Hankla+, Nuclear Physics 2182900300009 vol. 180 page 157 (1972) were fitted using 2182900300010 an empirical formula due to Cross and Ing 2182900300011 Nucl.Sci.Eng. Vol.58 Page 377 (1975). 2182900300012 the fitted formula is - 2182900300013 sigma = 0.082 - 0.067/(1.+(E/2.32)**2.66) + 2182900300014 0.588/(1.+(E/11.4)**10) 2182900300015 the spectrum averaged cross section was 2182900300016 calculated using 2182900300017 REL-REF (R,,W.G.Cross+,J,NSE,58,377,1975) 2182900300018 DECAY-DATA (80-HG-199-M,42.6MIN) 2182900300019 STATUS (DEP,21829002) 2182900300020 (TABLE) Table 3 of NST,19,775,1982 2182900300021 HISTORY (19830315C) A.P.T. 2182900300022 (19830322E) 2182900300023 (19830610A) BN. DECAY-DATA added. 2182900300024 (19830801E) 2182900300025 (20110301A) SD: SF9=DEIV added in REACTION code; 2182900300026 REL-REF added. 2182900300027 ENDBIB 25 0 2182900300028 NOCOMMON 0 0 2182900300029 DATA 2 1 2182900300030 EN-DUMMY DATA 2182900300031 MEV MB 2182900300032 1.5000E+00 2.3830E+02 2182900300033 ENDDATA 3 0 2182900300034 ENDSUBENT 33 0 2182900399999 ENDENTRY 3 0 2182999999999