ENTRY 23088 20200805 22902308800000001 SUBENT 23088001 20200805 22902308800100001 BIB 12 61 2308800100002 TITLE Neutron capture cross section measurement on 243Am 2308800100003 with a 4pi-Ge spectrometer 2308800100004 AUTHOR (J.Hori, M.Oshima, H.Harada, K.Furutaka, M.Koizumi, 2308800100005 F.Kitatani, Y.Toh, S.Nakamura, A.Kimura, M.Igashira, 2308800100006 M.Mizumoto, T.Ohsaki, T.Katabuchi, J.Goto) 2308800100007 INSTITUTE (2JPNKTO) Research Reactor Institute, Kyoto University,2308800100008 Osaka, Japan. Hori. Correspondence author, 2308800100009 e-mail: hori@rri.kyoto-u.ac.jp 2308800100010 (2JPNJAE) Nuclear Science and Engineering Directorate, 2308800100011 Japan Atomic Energy Agency, Tokai-mura, Japan. Oshima,2308800100012 Harada, Furutaka, Koizumi, Kitatani, Toh, Nakamura, 2308800100013 Kimura. 2308800100014 (2JPNTIT) Research Laboratory for Nuclear Reactor, 2308800100015 Tokyo Institute of Technology, Tokyo, Japan. Igashira,2308800100016 Mizumoto, Ohsaki, Katabuchi. 2308800100017 (2JPNNII) Radioisotope Center, Niigata University, 2308800100018 Niigata, Japan. Goto 2308800100019 REFERENCE (S,JAEA-C-2009-004,123,200904) Main reference, Table 2308800100020 for Res-Int, graph for cross section 2308800100021 FACILITY (LINAC,2JPNKTO) 46-MeV linear accelerator of KURRI. 2308800100022 Pulsed electron beam energy 30 MeV, current 30 micro-2308800100023 amperes, pulse width 100 ns, repetition rate 100Hz 2308800100024 INC-SOURCE (PHOTO) Fast neutrons were produced from the water- 2308800100025 cooled photo-neutron target assembly, 5 cm in diam. 2308800100026 and 6 cm long, which was composed of 12 sheets of 2308800100027 tantalum plates with total thickness of 29 mm. 2308800100028 The target was surrounded with a water moderator. 2308800100029 METHOD (TOF) The flight path used in the experiment is in 2308800100030 direction of 90-degree to the LINAC electron beam. 2308800100031 (SITA) Intermittent capture sample, dummy sample and 2308800100032 lead sample irradiation 2308800100033 (PHD) Pulse height discrimination 2308800100034 DETECTOR (HPGE) 4pi Ge spectrometer surrounded with large 2308800100035 Bi4Ge3O12 (BGO) detectors for anti-Compton suppres- 2308800100036 sion was employed. 2308800100037 (PROPC) BF3 proportional counter was set at the exit 2308800100038 of the first flight tube used as a neutron intensity 2308800100039 monitor 2308800100040 To decrease the background, a 10 mm thick lead was 2308800100041 set on the surface of each detector 2308800100042 SAMPLE The sample of 243Am was 128 mg of americium oxide 2308800100043 Am-O2 powder packed in an aluminum disk container 30 2308800100044 mm in diameter and 0.5 mm thick walls. The thickness 2308800100045 of sample 8.92E-5 atoms/b, sample radioactivity 2308800100046 835 MBq. 2308800100047 The dummy sample of identical Al case without the 2308800100048 americium oxide powder was used for the background 2308800100049 measurements. The identical Al case with Pb was also 2308800100050 used for determination of background level due to 2308800100051 neutrons scattered by the capture sample. 2308800100052 The enriched 10B sample, purity 93 %, was used for 2308800100053 the measurement of the incident neutron flux/spectrum 2308800100054 on the sample. The 10B sample was encapsulated in a 2308800100055 cylinder thin-walled (0.2 mm) aluminum container 25 2308800100056 mm in diameter, with a sample material thickness 2308800100057 5.68E-2 atoms/b. 2308800100058 MONITOR (5-B-10(N,A)3-LI-7,,SIG) For neutron flux and spectrum 2308800100059 determination 2308800100060 CORRECTION Corrections are made for background and for dead time2308800100061 HISTORY (20100301C) S.M. 2308800100062 (20200805U) SD: Correction in Subents 003, 004. 2308800100063 ENDBIB 61 0 2308800100064 NOCOMMON 0 0 2308800100065 ENDSUBENT 64 0 2308800199999 SUBENT 23088002 20100301 22202308800200001 BIB 2 2 2308800200002 REACTION (95-AM-243(N,G)95-AM-244,,SIG) 2308800200003 STATUS (UNOBT) Request for data sent 2010-02-03 to J.Hori 2308800200004 ENDBIB 2 0 2308800200005 COMMON 2 3 2308800200006 EN-MIN EN-MAX 2308800200007 EV EV 2308800200008 0.01 400. 2308800200009 ENDCOMMON 3 0 2308800200010 NODATA 0 0 2308800200011 ENDSUBENT 10 0 2308800299999 SUBENT 23088003 20200805 22902308800300001 BIB 4 6 2308800300002 REACTION ((95-AM-243(N,G)95-AM-244,,RI)// 2308800300003 (95-AM-243(N,G)95-AM-244,,SIG)) 2308800300004 ERR-ANALYS (DATA-ERR) No information about source of uncertainty 2308800300005 STATUS (TABLE) Table 1 of JAEA-C-2009-004 2308800300006 (DEP,23088002) 2308800300007 HISTORY (20200805U) SD: ERR-ANALYS added.MONIT(/REF) deleted. 2308800300008 ENDBIB 6 0 2308800300009 COMMON 1 3 2308800300010 EN-DN 2308800300011 EV 2308800300012 0.0253 2308800300013 ENDCOMMON 3 0 2308800300014 DATA 3 1 2308800300015 EN-MIN-NM DATA DATA-ERR 2308800300016 EV NO-DIM NO-DIM 2308800300017 0.5 25.7 1.5 2308800300018 ENDDATA 3 0 2308800300019 ENDSUBENT 18 0 2308800399999 SUBENT 23088004 20200805 22902308800400001 BIB 5 7 2308800400002 REACTION (95-AM-243(N,G)95-AM-244,,RI) 2308800400003 MONITOR (95-AM-243(N,G)95-AM-244,,SIG) 2308800400004 ERR-ANALYS (DATA-ERR) No information about source of uncertainty 2308800400005 STATUS (TABLE) Table 1 of JAEA-C-2009-004 2308800400006 (DEP,23088003) 2308800400007 HISTORY (20200805U) SD: ASSUMED -> MONITOR; ASSUM -> MONIT. 2308800400008 ERR-ANALYS added. 2308800400009 ENDBIB 7 0 2308800400010 NOCOMMON 0 0 2308800400011 DATA 4 1 2308800400012 EN-MIN DATA DATA-ERR MONIT 2308800400013 EV B B B 2308800400014 0.5 1969. 111. 76.6 2308800400015 ENDDATA 3 0 2308800400016 ENDSUBENT 15 0 2308800499999 ENDENTRY 4 0 2308899999999