ENTRY 30363 20090104 31343036300000001 SUBENT 30363001 20090104 31343036300100001 BIB 15 64 3036300100002 INSTITUTE (3CHFSHI) 3036300100003 REFERENCE (J,NSE,63,268,197707) Final publication. 3036300100004 (C,76LOWELL,1385,197607) Less(3) data points. 3036300100005 AUTHOR (M.W.Wu,J.C.Chou) 3036300100006 TITLE Measurement of the Ni-58(n,p)Co-58 cross section with 3036300100007 H(n,n)p as a standard. 3036300100008 EXP-YEAR (1976) 3036300100009 FACILITY (VDG) 7 MV Van de Graaff accelerator. 3036300100010 INC-SOURCE (P-LI7) Li-7(p,n)Be-7 reaction, using metallic lithium 3036300100011 target of 500 micr-gram/cm2 on tantalum backing. 3036300100012 SAMPLE Natural nickel metal with purity of 99.99%. 3036300100013 2.54 cm in diameter. Thicknesses of nickel vary 3036300100014 between 0.4839 and 0.4925 cm for various energies of 3036300100015 bombarding neutrons. 3036300100016 METHOD (ACTIV) The post irradiation gammas after decay of 3036300100017 Co-58 were measured. 3036300100018 .Incident neutron fluxes were measured with a proton 3036300100019 recoil telescope. 3036300100020 DETECTOR (GELI) About 40 cm3 laboratory fabricated Ge(Li) 3036300100021 detector. Calibration was carried out with gamma-gamma3036300100022 coincidence method using the Ge(Li) to detect 0.51 MeV 3036300100023 gammas and a NaI(Tl) to detect the 0.81 MeV gamma(Co58)3036300100024 .For the determination of absolute neutron flux, the 3036300100025 proton recoil telescope, which was similar as the one 3036300100026 by Kaeppelar+Froehner,IAEA Proc.Conf.on Nucl.Data for 3036300100027 Reactor,vol.I, 221, Helsinki,(1970), was designed. 3036300100028 (SIBAR) A 500 micron n-type silicon surface barrier 3036300100029 detector was used to detect the scattered protons 3036300100030 from the radiator. 3036300100031 (SCIN) .For neutron monitoring, a long counter and a 3036300100032 shielded NE213 liquid scintillation detector with 3036300100033 (n,gamma) discrimination were used. 3036300100034 MONITOR (1-H-1(N,EL)1-H-1,,SIG) 3036300100035 from Gammel's semi-empirical formula,''Fast 3036300100036 Neutron Physics'',Interscience publ.,Inc.,New York,19633036300100037 part II,chapt.V.T. 3036300100038 2 radiators prepared by evaporating stearic acid 3036300100039 C(18)-H(36)-O(2) onto a 0.2 mm stainless-steel plate. 3036300100040 And the thicknesses of radiators were 2760 micr-g/cm2 3036300100041 and 4512 micr-g/cm2. 3036300100042 PART-DET (DG,AR) 3036300100043 HISTORY (19761122C) KO. 3036300100044 (19770825A) KO.-Addition of 3 more data 3036300100045 points,correction of c.s. at 2.8MeV and relevant 3036300100046 amendment of BIB-sect. after final pub. of 3036300100047 Nucl.Sci.Eng.,63(1977)268.- 3036300100048 (20090115A) BIB section updated 3036300100049 CORRECTION The fraction of activations by one single elastic 3036300100050 neutron scattering was corrected by a Monte-Carlo 3036300100051 program. 3036300100052 ERR-ANALYS (ERR-T) Total errors (3 to 5%) are given. 3036300100053 The major sources of errors on cross section 3036300100054 determination are, (error in %): 3036300100055 (DATA-ERR) Counting statistics in recoil protons 1. 3036300100056 (ERR-S) Counting statistics in gamma measurements 1.2 3036300100057 (ERR-1) Sample distance 2. 3036300100058 (ERR-2) Gamma detector efficiency 2. 3036300100059 (ERR-3) Geometry of telescope 2. 3036300100060 (ERR-4) Thickness of radiator 1. 3036300100061 (ERR-5) Total n-p scattering cross section 0.5 3036300100062 (ERR-6) Neutron angular distribution 1. 3036300100063 (ERR-7) Neutron yield 1. 3036300100064 (ERR-8) Multiple scattering correction 1. 3036300100065 Total root-mean square error 4 to 5% 3036300100066 ENDBIB 64 0 3036300100067 COMMON 10 6 3036300100068 DATA-ERR ERR-S ERR-1 ERR-2 ERR-3 ERR-4 3036300100069 ERR-5 ERR-6 ERR-7 ERR-8 3036300100070 PER-CENT PER-CENT PER-CENT PER-CENT PER-CENT PER-CENT 3036300100071 PER-CENT PER-CENT PER-CENT PER-CENT 3036300100072 1. 1.2 2. 2. 2. 1. 3036300100073 0.5 1. 1. 1. 3036300100074 ENDCOMMON 6 0 3036300100075 ENDSUBENT 74 0 3036300199999 SUBENT 30363002 20090104 31343036300200001 BIB 4 10 3036300200002 REACTION (28-NI-58(N,P)27-CO-58,,SIG) 3036300200003 DECAY-DATA (27-CO-58,,DG,810.,,AR,511.) 3036300200004 STATUS (TABLE) Data taken from table II of Nucl.Sci.Eng., 3036300200005 63(1977)268. Compiler's note === 3036300200006 Previously published data in Table 5 of contributed 3036300200007 paper( not abstract) to 1976 Int.Conf.on the Inter- 3036300200008 actions of Neutrons with Nuclei,Lowell,Massachusetts, 3036300200009 presented less(3) data points and the cross-section 3036300200010 at 2.80 MeV was given as 154+-8 mb.=== 3036300200011 HISTORY (19770825A) KO.-Data replaced by new publication.- 3036300200012 ENDBIB 10 0 3036300200013 NOCOMMON 0 0 3036300200014 DATA 4 12 3036300200015 EN EN-RSL DATA ERR-T 3036300200016 MEV MEV MB MB 3036300200017 2.8000E+00 3.0000E-02 1.4900E+02 8.0000E+00 3036300200018 2.9900E+00 3.0000E-02 2.1400E+02 1.1000E+01 3036300200019 3.1600E+00 3.0000E-02 2.0700E+02 1.0000E+01 3036300200020 3.2000E+00 3.0000E-02 2.0100E+02 1.0000E+01 3036300200021 3.4000E+00 4.0000E-02 2.1300E+02 1.1000E+01 3036300200022 3.4900E+00 4.0000E-02 2.5700E+02 1.3000E+01 3036300200023 3.6000E+00 4.0000E-02 2.9500E+02 1.5000E+01 3036300200024 3.7200E+00 2.0000E-02 2.9800E+02 1.5000E+01 3036300200025 3.8000E+00 4.0000E-02 2.9400E+02 1.5000E+01 3036300200026 4.2000E+00 4.0000E-02 3.7300E+02 1.8000E+01 3036300200027 4.4000E+00 4.0000E-02 3.9400E+02 2.0000E+01 3036300200028 4.8000E+00 4.0000E-02 4.2000E+02 2.1000E+01 3036300200029 ENDDATA 14 0 3036300200030 ENDSUBENT 29 0 3036300299999 ENDENTRY 2 0 3036399999999