ENTRY 22987 20100713 22222298700000001 SUBENT 22987001 20100713 22222298700100001 BIB 18 132 2298700100002 TITLE Elastic scattering of 96 MeV neutrons from iron, 2298700100003 yttrium and lead. 2298700100004 AUTHOR (A.Oehrn, J.Blomgren, P.Andersson, A.Atac,C.Gustavsson,2298700100005 J.Klug, P.Mermod, S.Pomp, P.Wolniewicz, M.Oesterlund, 2298700100006 L.Nilsson,B.Bergenwall,K.Elmgren, N.Olsson, U.Tippawan,2298700100007 S.Dangtip, P.Phansuke, P.Nadel-Turonski, O.Jonsson, 2298700100008 A.V.Prokofiev, P.-U.Renberg, V.Blideanu, C.Le Brun, 2298700100009 J.F.Lecolley, F.R.Lecolley, M.Louvel, N.Marie-Noury, 2298700100010 C.Schweitzer, Ph.Eudes, F.Haddad, C.Lebrun, E.Bauge, 2298700100011 J.P.Delaroch, M.Girod, X.Ledoux, K.Amos,S.Karataglidis,2298700100012 R.Crespo, W.Haider, C.Johansson, A.J.Koning) 2298700100013 INSTITUTE (2SWDUPP) A.Oehrn (=A.Hildebrand), J.Blomgren, 2298700100014 P.Andersson, A.Atac, C.Gustavsson, J.Klug, P.Mermod, 2298700100015 S.Pomp,P.Wolniewicz,M.Oesterlund,L.Nilsson, 2298700100016 B.Bergenwall, U.Tippawan. 2298700100017 (2SWDFOI) K.Elmgren,N.Olsson-Swedish Defence Res.Agency2298700100018 (3TAICHM) S.Dangtip, P.Phansuke, U.Tippawan. 2298700100019 (1USAGWU) P.Nadel-Turonski . 2298700100020 (2FR CAE) V.Blideanu, C.Le Brun, J.F.Lecolley, 2298700100021 F.R.Lecolley, M.Louvel, N.Marie-Noury,C.Schweitzer. 2298700100022 (2FR NTE) Ph.Eudes, F.Haddad, C.Lebrun. 2298700100023 (2FR BRC) E.Bauge, J.P.Delaroch, M.Girod, X.Ledoux . 2298700100024 (3AULAML) K.Amos . 2298700100025 (3SAFSAF) S.Karataglidis 2298700100026 - Rhodes University, Grahamstown. 2298700100027 (2PRTPRT) R.Crespo -Instituto Superior Tecnico,Lisboa.2298700100028 (3INDMUA) W.Haider . 2298700100029 REFERENCE (J,PR/C,77,024605,2008) Main reference. 2298700100030 (C,2007NICE,2,1023,200704) Graphs of preliminary data 2298700100031 for iron and yttrium. 2298700100032 A,2007NICE,25(#372),200704- Abstract. 2298700100033 (T,Oehrn,2008) Exp. details, data analysis. 2298700100034 (C,2004SANTA,1,853,2004) First author - Angelica 2298700100035 Hildebrand (now her family name is Oehrn). 2298700100036 Graphs only for C-12, Pb-208, Y-89 (prelim.) 2298700100037 REL-REF (I,,J.Klug+,J,NIM/A,489,282,2002) Details of neutron 2298700100038 beam facility and SCANDAL setup at Swedberg Lab., 2298700100039 Uppsala, Sweden. 2298700100040 (R,,R.C.Byrd+,J,NIM/A,274,494,1989) Exp.neutron spectra2298700100041 for Li-7(p,n) reaction, used in data analysis. 2298700100042 (N,,B.Holmqvist+,J,AF,34,481,1967) Monte Carlo code, 2298700100043 later updates by N.Olsson. 2298700100044 http://mcnp-gree.lanl.gov/index.html - L.S.Waters+, 2298700100045 MCNPX Users' Manual, version 2.1.5. LANL, 14 Nov.1999.2298700100046 FACILITY (CYCLO,2SWDUPP) 2298700100047 SCANDAL - Scattered Neutron Detection Assembly. 2298700100048 INC-SOURCE (P-LI7) Li-7(p,n)reaction. Li-7 isotopically enriched 2298700100049 to 99.98%. 2298700100050 System of three collimators defined a 9cm diameter 2298700100051 neutron beam at scattering target, typical neutron 2298700100052 yield was 2.5E+6 1/sec over whole beam area. 2298700100053 INC-SPECT Neutron energy was monitoring by TFBC and by 2298700100054 integrated proton beam current from proton beam dump. 2298700100055 Resulting neutron spectrum consisted of 96+-0.5 MeV 2298700100056 peak and low-energy tail which was suppressed by 2298700100057 time-of-flight techniques. 2298700100058 Charge particles in neutron beam < 1%. 2298700100059 METHOD (REC) Detection of neutrons was based on conversion to 2298700100060 protons and detection of recoil protons. 2298700100061 Background was defined by removing the scattered 2298700100062 cylinder from setup. 2298700100063 (EDE) Protons were separated from other charged 2298700100064 particles by deltaE - E technique. 2298700100065 (TOF) To reject events from low-energy tail of neutron 2298700100066 spectrum, time-of-flight cut was used. 2298700100067 DETECTOR (SCIN) Each of two arms (for 10-50 deg and 30-70 deg) 2298700100068 has 2mm hick veto scintillator for fast charged 2298700100069 particle rejection, 2298700100070 10 mm thick neutron-proton converter scintillator, 2298700100071 2mm thick deltaE plastic scintillator (also as part of 2298700100072 trigger), 2298700100073 (CSICR) array of 12 CsI detectors for energy 2298700100074 determination of recoil protons, 2298700100075 two trigger scintillators, 2298700100076 (DRFTC) two drift chambers. 2298700100077 (TFBC) Fission counter TFBC for number of neutrons in 2298700100078 beam. TFBC uncertainty more 10 %. 2298700100079 Total energy resolution of individual CsI crystals is2298700100080 different, on average 3.7 MeV (FWHM). 2298700100081 Dead time in data acquisition system was about 2298700100082 for iron - 14%, for yttrium - 6%, for lead - 4%, 2298700100083 for background - 2%. 2298700100084 Total drift chamber efficiency was measured to be 2298700100085 0.75 +- 0.10. 2298700100086 Total proton detection efficiency 0.64 +- 0.10. 2298700100087 SAMPLE C-H2 sample serves for calibration purposes. 2298700100088 Four scattering targets were used: 2298700100089 Iron cylinder- 91.8% Fe-56, 5.8% Fe-54, 2.1% Fe-57, 2298700100090 0.3% Fe-58, 5 cm high, 5 cm diameter, 777g mass, 2298700100091 Yttrium cylinder- 5.2cm high, 5cm diameter, 456g mass,2298700100092 Radiogenic lead cylinder- 88% Pb-208, 11% Pb-206, 2298700100093 1% Pb-207, 6.3 cm high,2.9 cm diameter, 444 g mass, 2298700100094 Carbon cylinder - 5 cm high, 5 cm diameter, 178g mass 2298700100095 (to provide data for normalization). 2298700100096 ANALYSIS (SHAPE) Background data were subtracted from signal 2298700100097 spectra after normalization to the same neutron 2298700100098 fluence and taking dead time into consideration. 2298700100099 Spectra were fitted by Gaussians to ground state peak 2298700100100 and lowest excited state. For Fe-56 Gaussians was 2298700100101 fitted to excited state at 4.5 MeV, for Y-89 - to 2298700100102 states at 4.0, 7.0, 9.0 MeV. 2298700100103 For large angles ground state yield was extracted by 2298700100104 integration with limits determined visually. 2298700100105 MONITOR (6-C-12(N,EL)6-C-12,,DA) -for Fe and Y. 2298700100106 MONIT-REF (22847002,J.Klug,J,PR/C,68,064605,2003) 2298700100107 CORRECTION For low-energy continuum originating from Li-7(p,n) 2298700100108 reaction - typically around 3%, always < 6%. 2298700100109 For background and dead time. 2298700100110 For neutron attenuation and multiple scattering by 2298700100111 Monte Carlo code for Fe and Y, by MCNPX code and data 2298700100112 of ENDF/B for Pb. 2298700100113 ERR-ANALYS (ERR-T) Total error includes statistical, background 2298700100114 subtraction error, error due to correction for multiple2298700100115 scattering. 2298700100116 (ERR-S) Relative statistical errors(before corrections)2298700100117 (ERR-1) Error due to angle uncertainty 2298700100118 (ERR-3) Error due to correction for contribution from 2298700100119 low-energy continuum of Li-7(p,n) reaction - 0.6 %, 2298700100120 assuming relative uncertainty of 10 % in correction. 2298700100121 Position of target and drift chambers are known 2298700100122 slightly better than 1 mm, resulting in angular 2298700100123 uncertainty of about 1 deg. 2298700100124 Imperfect calibration can produce conversion position 2298700100125 errors up to about 0.5 mm, which corresponds to about 2298700100126 0.5 deg shift of presumed angle; this uncertainty was 2298700100127 randomly distributed among data points. 2298700100128 ADD-RES (THEO) Phenomenological and microscopic optical model 2298700100129 predictions. Study of deviation from Wick's limit. 2298700100130 HISTORY (20080609C) M.M. 2298700100131 (20090909A) M.M. Reference C,2004SANTA was added. 2298700100132 Two authors names were added. 2298700100133 (20100713U) M.M. Monitor was moved starting in 12 col. 2298700100134 ENDBIB 132 0 2298700100135 COMMON 5 3 2298700100136 EN EN-ERR EN-RSL-FW ERR-3 ANG-RSL 2298700100137 MEV MEV MEV PER-CENT ADEG 2298700100138 96. 0.5 1.2 0.6 1. 2298700100139 ENDCOMMON 3 0 2298700100140 ENDSUBENT 139 0 2298700199999 SUBENT 22987002 20080609 22002298700200001 BIB 3 3 2298700200002 REACTION (26-FE-56(N,EL)26-FE-56,,DA) 2298700200003 ERR-ANALYS (ERR-2) Uncertainty of normalization 5% for Y and Fe. 2298700200004 STATUS (TABLE) Data from Table II of main reference. 2298700200005 ENDBIB 3 0 2298700200006 COMMON 1 3 2298700200007 ERR-2 2298700200008 PER-CENT 2298700200009 5. 2298700200010 ENDCOMMON 3 0 2298700200011 DATA 5 36 2298700200012 ANG-CM DATA-CM ERR-T ERR-S ERR-1 2298700200013 ADEG MB/SR MB/SR PER-CENT MB/SR 2298700200014 9.5 4734. 16. 0.3 522. 2298700200015 11.1 3461. 16. 0.4 436. 2298700200016 12.9 2207. 11. 0.5 304. 2298700200017 14.7 1167. 8.7 0.7 208. 2298700200018 17.1 420.4 4.3 0.8 89. 2298700200019 18.5 275.9 4.8 1.2 42. 2298700200020 21.0 130.8 3.1 1.2 5.0 2298700200021 22.6 121.3 3.3 1.4 2.0 2298700200022 24.8 112.8 3.3 1.8 0.5 2298700200023 25.3 143.6 3.2 1.5 1.0 2298700200024 25.9 105.3 2.8 1.9 1.5 2298700200025 26.7 108.0 2.6 1.8 2.5 2298700200026 28.4 110.5 2.6 1.9 9.0 2298700200027 29.2 80.9 1.7 1.8 5.5 2298700200028 29.6 84.2 2.1 2.1 5.5 2298700200029 30.8 68.1 1.9 2.3 2.5 2298700200030 32.2 47.9 1.7 2.8 4.5 2298700200031 33.6 40.2 1.6 2.9 3.0 2298700200032 33.6 36.9 1.5 3.0 3.0 2298700200033 35.2 21.0 1.1 3.6 5.0 2298700200034 37.3 15.7 0.8 2.7 1.0 2298700200035 37.6 13.4 1.0 3.9 0.8 2298700200036 39.2 14.1 1.0 4.2 0.8 2298700200037 41.5 10.3 0.6 3.7 0.1 2298700200038 42.3 7.8 0.7 6.2 0.3 2298700200039 43.5 6.4 0.6 7.1 0.3 2298700200040 46.0 10.7 0.5 4.3 0.3 2298700200041 47.0 4.9 0.4 7.5 0.4 2298700200042 50.2 4.9 0.4 6.4 0.3 2298700200043 51.0 3.7 0.4 7.2 0.2 2298700200044 54.4 1.3 0.3 8.6 0.1 2298700200045 54.6 2.3 0.4 8.1 0.1 2298700200046 58.6 1.0 0.3 16. 0.04 2298700200047 62.6 0.65 0.22 31. 0.05 2298700200048 66.6 1.0 0.2 16. 0.04 2298700200049 70.6 0.48 0.13 21. 0.01 2298700200050 ENDDATA 38 0 2298700200051 ENDSUBENT 50 0 2298700299999 SUBENT 22987003 20080609 22002298700300001 BIB 3 3 2298700300002 REACTION (39-Y-89(N,EL)39-Y-89,,DA) 2298700300003 ERR-ANALYS (ERR-2) Uncertainty of normalization 5% for Y and Fe. 2298700300004 STATUS (TABLE) Data from Table III of main reference. 2298700300005 ENDBIB 3 0 2298700300006 COMMON 1 3 2298700300007 ERR-2 2298700300008 PER-CENT 2298700300009 5. 2298700300010 ENDCOMMON 3 0 2298700300011 DATA 5 32 2298700300012 ANG-CM DATA-CM ERR-T ERR-S ERR-1 2298700300013 ADEG MB/SR MB/SR PER-CENT MB/SR 2298700300014 9.5 5632. 65. 0.7 960. 2298700300015 10.8 3478. 45. 0.8 750. 2298700300016 13.0 1663. 33. 1.2 393. 2298700300017 14.4 539.2 16. 1.8 204. 2298700300018 17.1 208.2 8.9 2.7 34. 2298700300019 18.5 227.5 11.4 3.1 5.5 2298700300020 21.0 238.6 10.5 2.8 8.0 2298700300021 22.6 272.3 12.9 3.0 5.0 2298700300022 24.8 200.3 12.5 3.9 23. 2298700300023 25.3 174.1 9.8 3.5 50. 2298700300024 26.1 149.4 9.7 4.1 17. 2298700300025 26.7 118.4 8.0 4.2 17. 2298700300026 28.4 91.0 7.7 5.3 17.5 2298700300027 29.2 54.0 5.0 5.7 9.0 2298700300028 29.8 50.6 5.7 7.1 4.0 2298700300029 30.8 48.8 5.0 6.4 2.0 2298700300030 33.0 26.9 2.7 6.3 0.8 2298700300031 34.5 29.6 2.7 5.7 0.1 2298700300032 37.2 24.3 2.8 7.1 1.0 2298700300033 38.4 22.0 2.3 6.6 1.0 2298700300034 41.5 12.0 8.9 1.7 1.3 2298700300035 42.8 5.9 1.2 12.6 1.0 2298700300036 46.0 6.9 1.2 10.7 0.3 2298700300037 47.1 5.5 1.2 13.4 0.3 2298700300038 50.2 4.7 1.3 16.5 0.2 2298700300039 51.0 6.0 1.4 14.6 0.2 2298700300040 54.4 4.2 1.1 15.7 0.2 2298700300041 54.6 3.8 1.2 19.6 0.2 2298700300042 58.6 1.5 0.6 25. 0.1 2298700300043 62.6 1.3 0.5 0.3 0.02 2298700300044 66.6 1.4 0.7 31.5 0.03 2298700300045 70.6 0.7 0.4 36.3 0.04 2298700300046 ENDDATA 34 0 2298700300047 ENDSUBENT 46 0 2298700399999 SUBENT 22987004 20080609 22002298700400001 BIB 2 3 2298700400002 REACTION (82-PB-208(N,EL)82-PB-208,,DA) 2298700400003 STATUS (TABLE) Data from Table IV of main reference. 2298700400004 (COREL,22847003) 2298700400005 ENDBIB 3 0 2298700400006 NOCOMMON 0 0 2298700400007 DATA 5 30 2298700400008 ANG-CM DATA-CM ERR-T ERR-S ERR-1 2298700400009 ADEG MB/SR MB/SR PER-CENT MB/SR 2298700400010 9.8 4396. 47. 1.0 1783. 2298700400011 10.8 1792. 28. 1.3 869. 2298700400012 13.0 961. 28. 1.9 89. 2298700400013 14.4 623. 18. 2.1 88. 2298700400014 17.2 640. 15. 2.1 34. 2298700400015 18.5 787. 16. 2.0 89. 2298700400016 21.0 287. 10. 3.1 82. 2298700400017 22.5 282. 13. 3.7 39. 2298700400018 24.8 171. 12. 5.0 4.0 2298700400019 25.3 119. 8.3 5.3 9.8 2298700400020 25.9 132. 12. 5.0 7.3 2298700400021 26.7 103. 7.1 5.8 4.5 2298700400022 29.5 128.6 5.3 3.6 11.4 2298700400023 30.0 109.6 4.1 3.5 12.6 2298700400024 33.4 52.1 3.4 5.3 10.7 2298700400025 34.4 34.4 2.7 6.0 4.7 2298700400026 37.6 29.6 2.4 6.8 1.0 2298700400027 38.7 26.3 2.2 7.4 0.2 2298700400028 41.9 18.7 2.0 9.3 3.1 2298700400029 43.2 18.3 1.9 8.9 2.8 2298700400030 46.3 7.6 1.3 12. 0.2 2298700400031 47.2 8.6 1.3 12. 0.1 2298700400032 50.3 5.9 1.0 15. 0.4 2298700400033 51.0 8.8 1.3 13. 0.6 2298700400034 54.6 3.4 0.9 22. 0.5 2298700400035 54.9 3.5 0.7 18. 0.6 2298700400036 59.3 2.0 0.7 26. 0.1 2298700400037 63.6 1.0 0.5 43. 0.2 2298700400038 67.2 0.5 0.4 66. 0.1 2298700400039 71.2 0.7 0.5 52. 0.1 2298700400040 ENDDATA 32 0 2298700400041 ENDSUBENT 40 0 2298700499999 SUBENT 22987005 20080609 22002298700500001 BIB 5 9 2298700500002 REACTION (26-FE-56(N,EL)26-FE-56,,DA,,,DERIV) 2298700500003 ANALYSIS Extrapolations using various models were used. 2298700500004 ERR-ANALYS (DATA-ERR) Contains contributions from normalization 2298700500005 and standard deviation of the calculated average value2298700500006 of extrapolated cross section at 0. deg. 2298700500007 MISC-COL (MISC1) Ratio of data to Wick's limit. 2298700500008 (MISC2) Error of MISC1. 2298700500009 STATUS (TABLE) Data from Table V of main reference. 2298700500010 (DEP,22987002) 2298700500011 ENDBIB 9 0 2298700500012 NOCOMMON 0 0 2298700500013 DATA 5 1 2298700500014 ANG-CM DATA-CM DATA-ERR MISC1 MISC2 2298700500015 ADEG B/SR B/SR NO-DIM NO-DIM 2298700500016 0. 12.0 1.3 1.14 0.12 2298700500017 ENDDATA 3 0 2298700500018 ENDSUBENT 17 0 2298700599999 SUBENT 22987006 20080609 22002298700600001 BIB 5 9 2298700600002 REACTION (39-Y-89(N,EL)39-Y-89,,DA) 2298700600003 ANALYSIS Extrapolations using various models were used. 2298700600004 ERR-ANALYS (DATA-ERR) Contains contributions from normalization 2298700600005 and standard deviation of the calculated average value2298700600006 of extrapolated cross section at 0. deg. 2298700600007 MISC-COL (MISC1) Ratio of data to Wick's limit. 2298700600008 (MISC2) Error of MISC1. 2298700600009 STATUS (TABLE) Data from Table V of main reference. 2298700600010 (DEP,22987003) 2298700600011 ENDBIB 9 0 2298700600012 NOCOMMON 0 0 2298700600013 DATA 5 1 2298700600014 ANG-CM DATA-CM DATA-ERR MISC1 MISC2 2298700600015 ADEG B/SR B/SR NO-DIM NO-DIM 2298700600016 0. 22.7 2.2 1.09 0.10 2298700600017 ENDDATA 3 0 2298700600018 ENDSUBENT 17 0 2298700699999 SUBENT 22987007 20080609 22002298700700001 BIB 5 9 2298700700002 REACTION (82-PB-208(N,EL)82-PB-208,,DA) 2298700700003 ANALYSIS Extrapolations using various models were used. 2298700700004 ERR-ANALYS (DATA-ERR) Contains contributions from normalization 2298700700005 and standard deviation of the calculated average value2298700700006 of extrapolated cross section at 0. deg. 2298700700007 MISC-COL (MISC1) Ratio of data to Wick's limit. 2298700700008 (MISC2) Error of MISC1. 2298700700009 STATUS (TABLE) Data from Table V of main reference. 2298700700010 (DEP,22987004) 2298700700011 ENDBIB 9 0 2298700700012 NOCOMMON 0 0 2298700700013 DATA 5 1 2298700700014 ANG-CM DATA-CM DATA-ERR MISC1 MISC2 2298700700015 ADEG B/SR B/SR NO-DIM NO-DIM 2298700700016 0. 60. 14. 0.95 0.22 2298700700017 ENDDATA 3 0 2298700700018 ENDSUBENT 17 0 2298700799999 SUBENT 22987008 20080609 22002298700800001 BIB 5 9 2298700800002 REACTION (6-C-12(N,EL)6-C-12,,DA,,,DERIV) 2298700800003 ANALYSIS Extrapolations using various models were used. 2298700800004 ERR-ANALYS (DATA-ERR) Contains contributions from normalization 2298700800005 and standard deviation of the calculated average value2298700800006 of extrapolated cross section at 0. deg. 2298700800007 MISC-COL (MISC1) Ratio of data to Wick's limit. 2298700800008 (MISC2) Error of MISC1. 2298700800009 STATUS (TABLE) Data from Table V of main reference. 2298700800010 (DEP,22847002) Derived from data of REL-REF J.Klug+. 2298700800011 ENDBIB 9 0 2298700800012 NOCOMMON 0 0 2298700800013 DATA 5 1 2298700800014 ANG-CM DATA-CM DATA-ERR MISC1 MISC2 2298700800015 ADEG B/SR B/SR NO-DIM NO-DIM 2298700800016 0. 1.3 0.13 1.70 0.17 2298700800017 ENDDATA 3 0 2298700800018 ENDSUBENT 17 0 2298700899999 SUBENT 22987009 20080609 22002298700900001 BIB 6 10 2298700900002 REACTION (8-O-16(N,EL)8-O-16,,DA,,,DERIV) 2298700900003 ANALYSIS Extrapolations using various models were used. 2298700900004 ERR-ANALYS (DATA-ERR) Contains contributions from normalization 2298700900005 and standard deviation of the calculated average value2298700900006 of extrapolated cross section at 0. deg. 2298700900007 MISC-COL (MISC1) Ratio of data to Wick's limit. 2298700900008 (MISC2) Error of MISC1. 2298700900009 REL-REF (A,,P.Mermod+,J,PR/C,74,054002,2006) 2298700900010 STATUS (TABLE) Data from Table V of main reference. 2298700900011 (DEP,23030005)Derived from data of REL-REF P.Mermod+. 2298700900012 ENDBIB 10 0 2298700900013 NOCOMMON 0 0 2298700900014 DATA 5 1 2298700900015 ANG-CM DATA-CM DATA-ERR MISC1 MISC2 2298700900016 ADEG B/SR B/SR NO-DIM NO-DIM 2298700900017 0. 2.0 0.2 1.54 0.15 2298700900018 ENDDATA 3 0 2298700900019 ENDSUBENT 18 0 2298700999999 ENDENTRY 9 0 2298799999999