ENTRY            23215   20131221                             22392321500000001 
SUBENT        23215001   20131221                             22392321500100001 
BIB                 10         49                                 2321500100002 
TITLE       Measurement of Fission Cross-Sections with Lead       2321500100003 
           Slowing-down Spectrometer using Digital Signal         2321500100004 
           Processing.                                            2321500100005 
AUTHOR     (W.Takahashi, T.Oishi, M.Nakhostin, T.Yamauchi,M.Baba, 2321500100006 
           J.Hori, H.Yuki, T.Ohtsuki)                             2321500100007 
REFERENCE  (S,JAEA-C-2006-009,106,2006)                           2321500100008 
INSTITUTE  (2JPNTOH) W.Takahashi, T.Oishi, M.Nakhostin,T.Yamauchi,2321500100009 
           M.Baba, H.Yuki, T.Ohtsuki.                             2321500100010 
           (2JPNKTO)  J.Hori.                                     2321500100011 
FACILITY   (LINAC,2JPNKTO) Kyoto University lead slowing-down     2321500100012 
           spectrometer driven by an electron linac (KULS) at     2321500100013 
           KURRI. KULS is a cube of 1.5x1.5x1.5 m3, composed of   2321500100014 
           lead blocks (10x10x20 cm3, purity 99.9%), set on a     2321500100015 
           steel platform cart in the linac target room. All      2321500100016 
           surfaces of KULS are covered with Cd sheets of 0.5 mm  2321500100017 
           thick to shield from low energy neutrons.              2321500100018 
           The energy calibration of KULS was done by :           2321500100019 
           - BF3 counter for the neutron transmission measurement 2321500100020 
           through a resonance filters indium or cobalt,          2321500100021 
           - Ar gas counter for the capture gamma-ray measurement 2321500100022 
           with a resonance filter of Au, Cu or Al.               2321500100023 
           Pulse width of electron beam was generally 33 ns (FWHM)2321500100024 
           and the frequency was 100 Hz as the optimum value.     2321500100025 
           The beam current on the target was around 10.5 to 12.4 2321500100026 
           microA.                                                2321500100027 
INC-SOURCE (PHOTO) Pulsed fast neutrons are produced by a         2321500100028 
           photoneutron target of tantalum (8 cm diameter,6 cm    2321500100029 
           effective thickness) in cylindrical Ti case, which is  2321500100030 
           air-cooled with compressed air.                        2321500100031 
DETECTOR   (IOCH) Back-to-back (BTB, backsides of MA and 235U     2321500100032 
           deposits face each other) type double fission          2321500100033 
           ionization chamber with two parallel plate electrodes  2321500100034 
           was employed for the detection of fission events; made 2321500100035 
           of Al, 2 mm thick, 40 mm diameter, 43 mm length.       2321500100036 
           Distance between the electrode and the deposit is 8 mm.2321500100037 
           Ar + CO(2) gas is flowed through the BTB chamber.      2321500100038 
SAMPLE     Number of atoms for sample deposits was determined     2321500100039 
           through low-geometry alpha-counting:                   2321500100040 
           U-235  - 10 microg, (2.80+-0.10)E+16                   2321500100041 
           Np-237 -            (1.99+-0.02)E+17                   2321500100042 
           U-235  - 5 microg,  (1.51+-0.03)E+16                   2321500100043 
           Am-241 -            (1.73+-0.02)E+16                   2321500100044 
METHOD     (SLODT,PHD) The pulse height data and the slowing-down 2321500100045 
           time data were acquired by processing the waveform     2321500100046 
           data. The fission fragment pulses were discriminated   2321500100047 
           from the alpha-particles pulses by the pulse height.   2321500100048 
HISTORY    (20131221C) M.M.                                       2321500100049 
            Request for the data was sent 07.02.2014 to author    2321500100050 
            W.Takahashi.                                          2321500100051 
ENDBIB              49          0                                 2321500100052 
NOCOMMON             0          0                                 2321500100053 
ENDSUBENT           52          0                                 2321500199999 
SUBENT        23215002   20131221                             22392321500200001 
BIB                  3          5                                 2321500200002 
REACTION   (93-NP-237(N,F),,SIG,,SDT)                             2321500200003 
REL-REF    (A,22423002,T.Iwasaki+,J,NST,36,(2),127,1999)          2321500200004 
           (A,22731002,A.Yamanaka+,J,NST,30,863,1993)             2321500200005 
STATUS     (UNOBT)                                                2321500200006 
           Data are on Fig.4 of S,JAEA-C-2006-009,106,2006 .      2321500200007 
ENDBIB               5          0                                 2321500200008 
NOCOMMON             0          0                                 2321500200009 
NODATA               0          0                                 2321500200010 
ENDSUBENT            9          0                                 2321500299999 
SUBENT        23215003   20131221                             22392321500300001 
BIB                  3          4                                 2321500300002 
REACTION   (95-AM-241(N,F),,SIG,,SDT)                             2321500300003 
REL-REF    (A,22479002,S.Yamamoto,J,NSE,126,(2),201,1997)         2321500300004 
STATUS     (UNOBT)                                                2321500300005 
           Data are on Fig.5 of S,JAEA-C-2006-009,106,2006 .      2321500300006 
ENDBIB               4          0                                 2321500300007 
NOCOMMON             0          0                                 2321500300008 
NODATA               0          0                                 2321500300009 
ENDSUBENT            8          0                                 2321500399999 
ENDENTRY             3          0                                 2321599999999