ENTRY            23255   20150610                             22442325500000001 
SUBENT        23255001   20150610                             22442325500100001 
BIB                 13         70                                 2325500100002 
REFERENCE  (J,NP/A,936,6,2015)                                    2325500100003 
           #doi:10.1016/j.nuclphysa.2015.01.003                   2325500100004 
AUTHOR     (N.Dzysiuk, I.Kadenko, V.Gressier, A.J.Koning)         2325500100005 
TITLE      Cross section measurement of the 159Tb(n,gamma)Tb160   2325500100006 
           nuclear reaction.                                      2325500100007 
INSTITUTE  (2FR FR)  V.Gressier .                                 2325500100008 
            Institute for Radiation Protection and Nuclear Safety,2325500100009 
            Cadarache, France.                                    2325500100010 
           (4UKRUKR) Int. Nucl. Safety Center of Ukraine, Kyiv.   2325500100011 
                     N.Dzysiuk, I.Kadenko.                        2325500100012 
           (2SWDUPP) N.Dzysiuk .                                  2325500100013 
           (2NEDNRG,3ZZZIAE) A.J.Koning .                         2325500100014 
REL-REF    (I,,V.Lacoste,J,RM,45,1250,2010)                       2325500100015 
            Details of long counter.                              2325500100016 
FACILITY   (ACCEL,2FR FR)  AMANDE facility (IRSN, Cadarache) based2325500100017 
           on HVEE 2 MV Tandetron accelerator system.             2325500100018 
INC-SOURCE (D-D)  Thin deuterated target composed of a Ti layer   2325500100019 
           saturated by deuterium 825microg/cm2 thick attached to 2325500100020 
           a 0.5mm thick silver backing.                          2325500100021 
             Characteristics of the deuteron beams:               2325500100022 
           Neutron energy.MeV             3.7   4.3    5.4    7.  2325500100023 
           Deuteron beam current,MicroA   5.    8.     13.    2.5 2325500100024 
           Deuteron beam energy,keV       765.  1234.  2174.  32782325500100025 
           Mean energy uncertainty,keV    0.8   1.     1.5    2.  2325500100026 
           FWHM of peak, %                8.6   4.8    2.5    9.2 2325500100027 
INC-SPECT   Mono-energetic neutrons.                              2325500100028 
           PLC measurements were performed at 5 m and 0deg from   2325500100029 
           the target both with and without a shadow cone to      2325500100030 
           measure the fluence of the direct neutrons. The neutron2325500100031 
           fluence was monitored both by integrating the deuteron 2325500100032 
           charge deposited on the target and by means of two De  2325500100033 
           Pangher long counters placed at a distance of 6 m from 2325500100034 
           the target.                                            2325500100035 
           The fluence at the calibration position was determined 2325500100036 
           with an uncertainty of 2% to 3%.                       2325500100037 
SAMPLE     Metal of natural composition.                          2325500100038 
           Two terbium samples :                                  2325500100039 
            - 30mm diameter disk, 5mm of thickness, total mass    2325500100040 
           28.9g;                                                 2325500100041 
           - parallelepiped shape, 5x8x10 mm,total mass of 3.3g   2325500100042 
METHOD     (ACTIV) Terbium samples were irradiated under 0deg     2325500100043 
           angle with respect to the incoming deuteron beam.      2325500100044 
           The sample-to-target distance was varied from 3.3cm to 2325500100045 
           20.3cm leading to neutron fluence rates between        2325500100046 
           6.E+4 and 3.E+6 /cm2/s .                               2325500100047 
           Volumetric inhomogeneity (i.e. the maximum variation)  2325500100048 
           in the terbium disk sample was of 39%, 44% and 53% in  2325500100049 
           fluence and of 54keV, 86keV and 133keV in energy,      2325500100050 
           respectively at 3.7MeV, 4.3MeV, and 5.4MeV.            2325500100051 
           The irradiations in the 7MeV neutron field were        2325500100052 
           performed at three distances:                          2325500100053 
           Distance to the target,cm    15.3  3.3   10.3          2325500100054 
           Volumetric inhomogeneity,%   14.   93.   22.           2325500100055 
           Neutron energy error,kev     27.   413.  48.           2325500100056 
           Counting times between 15 minutes and 17 hours at      2325500100057 
           1.5cm source-detector distance.                        2325500100058 
DETECTOR   (LONGC) Long counters for reference fluence            2325500100059 
           verification.                                          2325500100060 
           (HPGE) HPGe detector GC1212, CANBERRA for gamma-ray    2325500100061 
           spectroscopy of samples immediately after irradiation. 2325500100062 
           The extra-range germanium detector GX4019, CANBERRA at 2325500100063 
           KINR ( Ukraine) after 5 days .                         2325500100064 
           The energy resolution was found to be 1.9keV for 1332  2325500100065 
           keV gamma-rays from 60Co ; 0.8keV for 122keV from 57Co.2325500100066 
           The efficiency calibration of the detector was         2325500100067 
           performed by 60Co, 137Cs, 152Eu, 241Am sources.        2325500100068 
CORRECTION  For self-shielding; self-shielding factor 1.02-1.05.  2325500100069 
            For contribution of low-energy scattered neutrons;    2325500100070 
            Fractional contribution(FC) 0.30-0.91 .               2325500100071 
HISTORY    (20150610C) M.M.                                       2325500100072 
ENDBIB              70          0                                 2325500100073 
NOCOMMON             0          0                                 2325500100074 
ENDSUBENT           73          0                                 2325500199999 
SUBENT        23255002   20150610                             22442325500200001 
BIB                  7         28                                 2325500200002 
REACTION   (65-TB-159(N,G)65-TB-160,,SIG)                         2325500200003 
DECAY-DATA (65-TB-160,72.3D,DG,298.58,0.255,DG,966.17,0.252)      2325500200004 
ANALYSIS   The cross sections were calculated by the isotopic     2325500200005 
           abundance, the number of nuclei in sample, the decay   2325500200006 
           constant, the detector efficiency, the gamma yield,    2325500200007 
           the neutron flux, the times of irradiation, cooling,   2325500200008 
           measurement, the peak area, the self-shielding factor, 2325500200009 
           the fractional contribution of the low-energy scattered2325500200010 
           neutrons - see Eq.(2) of J,NP/A,936,6,2015.            2325500200011 
ERR-ANALYS (ERR-T) Total uncertainty combined from individual     2325500200012 
           uncertainties in quadrature - 7.1 - 38 % .             2325500200013 
           Sources of uncertainties:                              2325500200014 
           (ERR-S,3.,5.5) Counting rate (3-5.5)%                  2325500200015 
           (ERR-1) Efficiency calibration                         2325500200016 
           (ERR-2,0.22,0.78) Self-absorption of gamma-ray         2325500200017 
           (ERR-3,,0.1) Constants (mass) <0.1%                    2325500200018 
           (ERR-4,2.3,6.) Neutron flux (2.3-6)%                   2325500200019 
           (ERR-5,0.2,0.7) Gamma intensity (0.2-0.7)              2325500200020 
           Also self-shielding factor and fractional contribution.2325500200021 
           Errors of weighting the sample or monitor one are      2325500200022 
           negligible as well (<0.05%).                           2325500200023 
REL-REF    (R,,R.B.Firestone+,B,FIRESTONE,,1996)                  2325500200024 
             Ref.for HL of Tb-160                                 2325500200025 
           (A,12832014,W.P.Poenitz,S,ANL-83-4,239,1982)           2325500200026 
           (A,30031024,G.Peto+,J,JNE,21,797,1967)                 2325500200027 
ADD-RES    (COMP) Measured data are compared and agree with       2325500200028 
           TALYS-1.2 calculation .                                2325500200029 
STATUS     (TABLE) Table 3 of J,NP/A,936,6,2015.                  2325500200030 
ENDBIB              28          0                                 2325500200031 
COMMON               1          3                                 2325500200032 
ERR-1                                                             2325500200033 
PER-CENT                                                          2325500200034 
 3.                                                               2325500200035 
ENDCOMMON            3          0                                 2325500200036 
DATA                 4          4                                 2325500200037 
EN         EN-ERR     DATA       ERR-T                            2325500200038 
MEV        MEV        MB         MB                               2325500200039 
3.6700     0.0008      30.8       2.2                             2325500200040 
4.2800     0.0010      21.78      1.80                            2325500200041 
5.3900     0.0015      6.13       0.55                            2325500200042 
6.850      0.002       2.14       0.83                            2325500200043 
ENDDATA              6          0                                 2325500200044 
ENDSUBENT           43          0                                 2325500299999 
ENDENTRY             2          0                                 2325599999999