ENTRY 23133 20110719 22282313300000001 SUBENT 23133001 20110719 22282313300100001 BIB 13 51 2313300100002 TITLE Total neutron cross section for Ta-181. 2313300100003 AUTHOR (A.Matic,R.Beyer,E.Birgersson, A.Ferrari, E.Grosse, 2313300100004 R.Hannaske, A.Junghans, T.Koegler, R.Massarczyk, 2313300100005 M.Mosconi, R.Nolte,K.-D.Schilling, R.Schwengner, 2313300100006 A.Wagner) 2313300100007 INSTITUTE (2GERZFK) A.Matic,R.Beyer,E.Birgersson, A.Ferrari, 2313300100008 E.Grosse, R.Hannaske, A.Junghans, T.Koegler, 2313300100009 R.Massarczyk, K.-D.Schilling, R.Schwengner, A.Wagner. 2313300100010 (2GERDRE) R.Hannaske,T.Koegler,R.Massarczyk. 2313300100011 (2GERPTB) M.Mosconi, R.Nolte. 2313300100012 REFERENCE (J,EPJ/CS,8,07006,2010) 2313300100013 #doi:10.1051/epjconf/20100807006 2313300100014 REL-REF (I,,J.Klug+,J,NIM/A,577,641,2007) nELBE setup details. 2313300100015 (I,,R.Beyer+,J,NIM/A,575,449,2007) 2313300100016 Proton-recoil plastic detector, data acquisition system2313300100017 details. 2313300100018 METHOD (TOF) Flight path 6 m. Time resolution (FWHM) < 700 ps.2313300100019 energy resolution is between 0.2% and 2% in a neutron 2313300100020 energy range between 0.2MeV and 10MeV. 2313300100021 (TRN) Transmission. 2313300100022 FACILITY (LINAC,2GERZFK) Superconducting Electron Linac. 2313300100023 INC-SOURCE (BRST) Electrons are accelerated up to 40MeV using 2313300100024 Electron Linac for beams with high Brilliance and low 2313300100025 Emittance ELBE. 2313300100026 Bremsstrahlung radiation is induced by impinging 2313300100027 a high intensity electron beam on a liquid lead loop. 2313300100028 (PHOTO) Fast neutrons are generated via the (gamma,n) 2313300100029 reactions. Electron bunch < 10 ps. Neutrons are 2313300100030 isotropically emitted from the radiator (about 1 cm**3)2313300100031 and guided by a conical collimator of entrance diameter2313300100032 2 cm, length 2.4 m, and exit diameter is 3 cm. 2313300100033 INC-SPECT Clearly separated gamma-flash and white neutron 2313300100034 spectra. 2313300100035 Neutrons make only 0.6% of total events for the no 2313300100036 target measurement, 0.6% of total events for the Al-27 2313300100037 measurement and 3.2% of total events for the Ta-181 2313300100038 measurement. 2313300100039 DETECTOR (SCIN) Fast plastic - scintillation material EJ200, 2313300100040 large area stripes of 1000 x 42 x 11 mm3, readout by 2313300100041 two Hamamatsu2 R2059-01 2-inch photomultiplier tubes. 2313300100042 (BAF2) nELBE setup consists of the plastic detectors 2313300100043 for neutron detection and BaF2 detectors for emitted 2313300100044 gamma-rays detection. 2313300100045 SAMPLE 2.55 cm thick Ta-181 (99.988%) absorber and 4.00 cm 2313300100046 thick Al-27 (100%) absorber. 2313300100047 Runs changing samples, with and without samples, every 2313300100048 hour. 2313300100049 CORRECTION For conversion dead-time. 2313300100050 HISTORY (20110719C) M.M. 2313300100051 Request of data was sent to A.Matic - a.matic@fzd.de 2313300100052 19 -07-2011. 2313300100053 ENDBIB 51 0 2313300100054 NOCOMMON 0 0 2313300100055 ENDSUBENT 54 0 2313300199999 SUBENT 23133002 20110719 22282313300200001 BIB 4 10 2313300200002 REACTION (13-AL-27(N,TOT),,SIG) 2313300200003 EXP-YEAR (2008) Feb.2008. 2313300200004 REL-REF (N,22331004,G.Rohr,C,94GATLIN,1,215,1994) 2313300200005 (N,10004002,R.B.Schwartz+,R,NBS-MONO-138,197401) - 2313300200006 National Bureau of Standards, Washington DC, US, 2313300200007 Monograph number 138. 2313300200008 Data of G.Rohr and R.B.Schwartz+ were rebind to the 2313300200009 present experiment energy resolution and used for 2313300200010 comparison. 2313300200011 STATUS Data are on Fig.3 of J,EPJ/CS,8,07006,2010. 2313300200012 ENDBIB 10 0 2313300200013 NOCOMMON 0 0 2313300200014 NODATA 0 0 2313300200015 ENDSUBENT 14 0 2313300299999 SUBENT 23133003 20110719 22282313300300001 BIB 5 10 2313300300002 REACTION (73-TA-181(N,TOT),,SIG) 2313300300003 EXP-YEAR (2008) Feb.2008. 2313300300004 ANALYSIS Al-27 data were used for Ta-181 data calibration. 2313300300005 REL-REF (A,10047077,D.G.Foster Jr+,J,PR/C,3,576,1971) 2313300300006 Excellent agreement. 2313300300007 (D,12159002,R.C.Martin+,J,BAP,12,106,1967) 2313300300008 Systematically 1.6 % lower than R.C.Martin+ data. 2313300300009 (N,,W.P.Poenitz+,J,NSE,78,333,1981) Data with low 2313300300010 energy resolution. 2313300300011 STATUS Data are on Fig.4 of J,EPJ/CS,8,07006,2010. 2313300300012 ENDBIB 10 0 2313300300013 NOCOMMON 0 0 2313300300014 NODATA 0 0 2313300300015 ENDSUBENT 14 0 2313300399999 ENDENTRY 3 0 2313399999999