ENTRY G0002 20060729 G014G000200000001 SUBENT G0002001 20060729 G014G000200100001 BIB 12 35 G000200100002 TITLE Photofission and photoneutron cross section for Np-237 G000200100003 in the energy region near threshold G000200100004 AUTHOR (Marilia T.F.Cesar Khouri) G000200100005 INSTITUTE (3BZLIPE) G000200100006 REFERENCE (W,CESAR KHOURI,19830524) final report to the IAEA on G000200100007 the research contract NDT-18,sent to the IAEA of G000200100008 May 10, 1983 G000200100009 SAMPLE Neptunium oxide on six titanium disks of 40 mm in G000200100010 diameter and 300 mu thickness. The neptunium mass was G000200100011 measured by alpha spectrometry using a Si(Li) detector G000200100012 MONITOR gamma radiation intensities incident on the sample G000200100013 were measured by 3*3 inch NaI(Tl) crystal G000200100014 FACILITY (REAC) 2 MW pool type research reactor G000200100015 INC-SPECT discret gamma-rays were produced by thermal neutron G000200100016 capture in the following targets G000200100017 target E,MeV flux,gammas/cm**2/sec G000200100018 S-32 5.43 (5.1+-0.5)*10**5 G000200100019 Dy-162 5.58 (2.4+-0.2)*10**5 G000200100020 Ti-48 6.73 (6.1+-0.6)*10**5 G000200100021 Mn-55 7.23 (5.7+-0.6)*10**5 G000200100022 Pb-207 7.38 (1.9+-0.2)*10**5 G000200100023 Fe-56 7.64 (6.3+-0.6)*10**5 G000200100024 Al-27 7.72 (5.8+-0.6)*10**5 G000200100025 Zn-64 7.88 (2.4+-0.2)*10**5 G000200100026 Cu-63 7.91 (4.6+-0.4)*10**5 G000200100027 Ni-58 9.00 (3.3+-0.3)*10**5 G000200100028 Cr-52 9.72 (2.7+-0.3)*10**5 G000200100029 N-14 10.83 (2.8+-0.3)*10**5 G000200100030 CORRECTION corrections were introduced for secondary lines G000200100031 contributions G000200100032 ERR-ANALYS (DATA-ERR) total error G000200100033 STATUS (PRELM) data were taken from final report to the iaea G000200100034 on the research contract NDT-18 G000200100035 HISTORY (19830630C) by VP. G000200100036 (20060728A) BIB section updated G000200100037 ENDBIB 35 0 G000200100038 NOCOMMON 0 0 G000200100039 ENDSUBENT 38 0 G000200199999 SUBENT G0002002 20060729 G014G000200200001 BIB 2 7 G000200200002 REACTION (93-NP-237(G,X)0-NN-1,,SIG) the total emission of G000200200003 neutrons presenting the sum of sig(g,n) and G000200200004 nu av. times sig(g,fiss) G000200200005 DETECTOR (LONGC) polythen cube, 60 cm on a side, containing G000200200006 60 He-3 proportional counter tubes in four concentric G000200200007 rings of 6.4, 10.8, 14.6 and 17.8 cm of radius. the G000200200008 efficiency determined with a cf-252 source was 0.43 G000200200009 ENDBIB 7 0 G000200200010 NOCOMMON 0 0 G000200200011 DATA 3 12 G000200200012 EN DATA DATA-ERR G000200200013 MEV MB MB G000200200014 5.43 3.0 1.7 G000200200015 5.58 12.9 2.2 G000200200016 6.73 100.2 16.6 G000200200017 7.23 39.5 10.4 G000200200018 7.38 78.5 9.4 G000200200019 7.64 70.4 11.1 G000200200020 7.72 97.1 12.2 G000200200021 7.88 133.4 25.4 G000200200022 7.91 156.5 20.0 G000200200023 9.00 166.2 28.9 G000200200024 9.72 261.5 68.8 G000200200025 10.83 910.6 212.2 G000200200026 ENDDATA 14 0 G000200200027 ENDSUBENT 26 0 G000200299999 SUBENT G0002003 20060729 G014G000200300001 BIB 2 5 G000200300002 REACTION (93-NP-237(G,F),,SIG) G000200300003 DETECTOR (TRD) makrofol kg solid state track detector, 8 mu G000200300004 thickness as fission fragment detector. Total G000200300005 efficiency of the method was 0.37 and was determined G000200300006 using a Cf-252 calibrated source G000200300007 ENDBIB 5 0 G000200300008 NOCOMMON 0 0 G000200300009 DATA 3 12 G000200300010 EN DATA DATA-ERR G000200300011 MEV MB MB G000200300012 5.43 5.6 1.0 G000200300013 5.58 8.1 1.2 G000200300014 6.73 32.3 5.1 G000200300015 7.23 10.4 2.7 G000200300016 7.38 22.5 2.5 G000200300017 7.64 19.8 3.0 G000200300018 7.72 27.8 3.5 G000200300019 7.88 36.4 6.3 G000200300020 7.91 43.0 5.1 G000200300021 9.00 41.0 7.7 G000200300022 9.72 62.8 16.4 G000200300023 10.83 205.0 33.1 G000200300024 ENDDATA 14 0 G000200300025 ENDSUBENT 24 0 G000200399999 SUBENT G0002004 20060729 G014G000200400001 BIB 3 8 G000200400002 REACTION (93-NP-237(G,N)93-NP-236,,SIG) G000200400003 ANALYSIS data of photoneutron cross section sig(g,n) given G000200400004 in this subentry were obtained using experimental G000200400005 results for sig(g,nem) (subentry 2) and sig(g,fiss) G000200400006 (subentry 3) and nu-bar values given by Caldwell,J.T. G000200400007 and Dowdy,E.J.,Nucl.Sci.Eng. 56 (1975) 179, namely G000200400008 nu-bar=0.4027+0.2505*egamma G000200400009 STATUS (DEP,G0002002) see explanation under analysis G000200400010 ENDBIB 8 0 G000200400011 NOCOMMON 0 0 G000200400012 DATA 3 10 G000200400013 EN DATA DATA-ERR G000200400014 MEV MB MB G000200400015 6.73 32.7 7.2 G000200400016 7.23 16.4 4.0 G000200400017 7.38 27.8 6.4 G000200400018 7.64 23.9 4.5 G000200400019 7.72 32.1 6.1 G000200400020 7.88 46.9 10.8 G000200400021 7.91 53.9 10.9 G000200400022 9.00 57.3 9.8 G000200400023 9.72 88.1 16.2 G000200400024 10.83 272.2 171.9 G000200400025 ENDDATA 12 0 G000200400026 ENDSUBENT 25 0 G000200499999 ENDENTRY 4 0 G000299999999