ENTRY G4088 20200108 G044G408800000001 SUBENT G4088001 20200108 G044G408800100001 BIB 17 51 G408800100002 TITLE Population cross-section of 179m2Hf from the G408800100003 reactions on hafnium and tantalum targets G408800100004 AUTHOR (V.A.Zheltonozhsky, A.N.Savrasov) G408800100005 INSTITUTE (4UKRIJD) G408800100006 REFERENCE (J,NIM/B,438,20,2019) G408800100007 #doi:10.1016/j.nimb.2018.10.007 G408800100008 REL-REF (O,32249001,V.Zheltonozhsky+,J,NIM/B,438,20,2019) G408800100009 Data for the 178Hf(n,gamma)179m2Hf reaction G408800100010 FACILITY (LINAC,4UKRKFT) The 40 MeV electron linac (LUE-40) G408800100011 INC-SOURCE (BRST) The bremsstrahlung was generated by impinging G408800100012 the electron beam on the solid tantalum and aluminum G408800100013 beam dumps. G408800100014 SAMPLE A stack of the natHf-natTa-natLu sample was made. The G408800100015 samples were wrapped with 0.040 mm thick aluminum G408800100016 foil with purity higher than 99.99% and put in the G408800100017 aluminum cylinder with diameter of 1.5 cm and height G408800100018 of 2 cm. G408800100019 The size of the natLu metal foil was 1x0.7x0.007 cm, G408800100020 weight 0.05 g. G408800100021 METHOD (ACTIV) Induced gamma-activity was measured. G408800100022 DETECTOR (HPGE) HPGe-detector which have the energy resolution G408800100023 of 1.8-2 keV at the 1332.5 keV peak of 60Co. G408800100024 MONITOR (71-LU-175(G,N)71-LU-174-G,,SIG) G408800100025 (71-LU-175(G,2N)71-LU-173,,SIG) G408800100026 ANALYSIS The 175Lu(gamma,n)174Lu-G and 175Lu(gamma,2n) 173Lu G408800100027 reactions cross-sections were calculated with the G408800100028 step of 1 MeV by using the TALYS-1.6 and EMPIRE-3.2 G408800100029 codes and checked on agreement with the experimental G408800100030 data from L0015019 and L0015020 in the energy regions G408800100031 (7.800-13.0)MeV and (14.06-19.3) MeV, respectively. G408800100032 ERR-ANALYS (DATA-ERR) The overall uncertainty is the quadratic G408800100033 sum of both random and systematic errors. The random G408800100034 errors are due to uncertainties in sample mass and G408800100035 counting statistics. The systematic errors are due to G408800100036 uncertainties in the simulated bremsstrahlung G408800100037 spectrum due to the use of GEANT4 code, the G408800100038 experimental photon or neutron fluxes due to the use G408800100039 of the 175Lu(g,n) 174gLu, 175Lu(g,2n)173Lu or G408800100040 180Hf(n,g)181Hf monitor reactions cross-sections, G408800100041 detection efficiency and the decay intensities. The G408800100042 overall uncertainty is found to be 6.4-7.9%. G408800100043 DECAY-DATA (72-HF-179-M2,25.1D,DG,362.6,0.396, G408800100044 DG,409.7,0.214, G408800100045 DG,453.6,0.676) G408800100046 (71-LU-174-G,3.31YR,DG,76.5,0.059) G408800100047 (71-LU-173,1.37YR,DG,285.4,0.0061) G408800100048 ADD-RES (COMP)Measured isomeric ratios were compared with G408800100049 values of model calculation TALYS-1.6 and EMPIRE-3.2 G408800100050 codes. G408800100051 STATUS (TABLE) From Tab.1 in Nucl.Instr.Meth.B,438,20,2019 G408800100052 HISTORY (20200108C)UkrNDC G408800100053 ENDBIB 51 0 G408800100054 COMMON 1 3 G408800100055 EN-MAX G408800100056 MEV G408800100057 37. G408800100058 ENDCOMMON 3 0 G408800100059 ENDSUBENT 58 0 G408800199999 SUBENT G4088002 20200108 G044G408800200001 BIB 3 4 G408800200002 REACTION (72-HF-180(G,N)72-HF-179-M2,,SIG,,BRA) G408800200003 SAMPLE The size of the natHf metal foil was 0.3x0.6x0.24 cm, G408800200004 weight 0.57 g. G408800200005 MISC-COL (MISC) Integral cross-section G408800200006 ENDBIB 4 0 G408800200007 NOCOMMON 0 0 G408800200008 DATA 4 1 G408800200009 DATA DATA-ERR MISC MISC-ERR G408800200010 MB MB MB*MEV MB*MEV G408800200011 1.6 0.1 14.6E-03 1.0E-03 G408800200012 ENDDATA 3 0 G408800200013 ENDSUBENT 12 0 G408800299999 SUBENT G4088003 20200108 G044G408800300001 BIB 3 4 G408800300002 REACTION (73-TA-181(G,X)72-HF-179-M2,,SIG,,BRA) G408800300003 SAMPLE The size of the natTa metal foil was 1.4x1.5x0.02 cm, G408800300004 weight 0.72 g. G408800300005 MISC-COL (MISC) Integral cross-section G408800300006 ENDBIB 4 0 G408800300007 NOCOMMON 0 0 G408800300008 DATA 4 1 G408800300009 DATA DATA-ERR MISC MISC-ERR G408800300010 MB MB MB*MEV MB*MEV G408800300011 1.8 0.1 17.1E-03 1.1E-03 G408800300012 ENDDATA 3 0 G408800300013 ENDSUBENT 12 0 G408800399999 ENDENTRY 3 0 G408899999999