ENTRY 32241 20161013 31763224100000001 SUBENT 32241001 20161013 31763224100100001 BIB 11 48 3224100100002 TITLE Prompt gamma-rays from fast neutron capture in nat Ni 3224100100003 AUTHOR (I.M.Kadenko, V.A.Plujko, B.M.Bondar, O.M.Gorbachenko, 3224100100004 B.Yu.Leshchenko, K.M.Solodovnyk) 3224100100005 INSTITUTE (4UKRKGU) 3224100100006 (4UKRUKR)All-Ukrainian Center for Radiosurgery of the 3224100100007 Clinical Hospital Feofania, Kyiv and National Technical3224100100008 University of Ukraine Kyiv Polytechnic Institute, Kyiv 3224100100009 REFERENCE (J,YFE,17,(2),122,2016) 3224100100010 FACILITY (NGEN,4UKRKGU)Neutron pulse generator (NPG-200), 3224100100011 designed and manufactured at Nuclear Physics Department3224100100012 of Taras Shevchenko National University of Kyiv, was 3224100100013 used as a neutron source. 3224100100014 INC-SOURCE (D-T) Reaction 3H(d,n)4He in Ti-T target was used to 3224100100015 generate fast neutrons. Deuterons are accelerated up 3224100100016 to 130 keV energy by low-voltage accelerator with 3224100100017 klystron bunching of the beam. Pulse generation 3224100100018 frequency was equal to 7.25 MHz, average neutron 3224100100019 intensity 10E7/s in 4PI. 3224100100020 SAMPLE The nat Ni sample has the ring torus shape with the 3224100100021 main radius R=10.0 cm and minor radius r = 1.5 cm. 3224100100022 DETECTOR (NAICR) The emitted prompt gamma-rays are traversed 3224100100023 the flight path and detected by the NaI(Tl) 3224100100024 scintillator cylindrical detector of sizes: diameter 3224100100025 150 mm, height 100 mm. The flight path equals 1.76 m 3224100100026 to ensure reliable separation of prompt gamma-rays from3224100100027 neutron and gamma-ray background. For reducing 3224100100028 influence of cosmic rays, the NaI(Tl) detector was 3224100100029 surrounded by Geiger counters working in 3224100100030 anti-coincidence mode with spectrometer signals. The 3224100100031 NaI(Tl) detector and Geiger counters were placed in a 3224100100032 special composed shielding with concrete and lead 3224100100033 bricks. 3224100100034 (SCIN) The neutron beam monitoring is performed by 3224100100035 the use of additional plastic scintillator detector 3224100100036 with sizes: diameter 30 mm, height 40 mm. This 3224100100037 detector was placed at a distance 3.36 m from Ti-T 3224100100038 target. The angle between the deuteron beam and the 3224100100039 detector is 140 degrees (the neutron beam has the 3224100100040 energy 13.5 MeV in this direction). 3224100100041 ADD-RES (COMP) The experimental results were compared with 3224100100042 theoretical calculations performed using EMPIRE 3.2 3224100100043 and TALYS 1.6 codes for statistical models of 3224100100044 compound and precompound decays. The impact of 3224100100045 different expressions for photon strength function 3224100100046 and nuclear level density on the calculation results 3224100100047 for nat Ni was considered. 3224100100048 STATUS (TABLE) Data were received from B.M.Bondar 20161012. 3224100100049 HISTORY (20161013C) UKRNDC 3224100100050 ENDBIB 48 0 3224100100051 NOCOMMON 0 0 3224100100052 ENDSUBENT 51 0 3224100199999 SUBENT 32241002 20161013 31763224100200001 BIB 2 5 3224100200002 REACTION (28-NI-0(N,X)0-G-0,,DA/DE,,4PI) 3224100200003 ERR-ANALYS (ERR-S)Uncertainties of the cross section were 3224100200004 estimated in assumption that the amplitude spectrum is 3224100200005 followed by Gauss distributions due to the large number3224100200006 of external independent factors. 3224100200007 ENDBIB 5 0 3224100200008 COMMON 3 3 3224100200009 EN EN-RSL ANG 3224100200010 MEV MEV ADEG 3224100200011 14.1 0.2 90. 3224100200012 ENDCOMMON 3 0 3224100200013 DATA 3 50 3224100200014 E DATA ERR-S 3224100200015 MEV MB/MEV MB/MEV 3224100200016 2.14 300.853 36.102 3224100200017 2.5 347.987 41.758 3224100200018 2.85 294.873 35.385 3224100200019 3.12 265.889 31.907 3224100200020 3.45 249.924 29.991 3224100200021 3.82 239.853 28.782 3224100200022 4.2 230.188 27.623 3224100200023 4.5 158.545 19.025 3224100200024 4.77 199.132 23.896 3224100200025 5.07 149.021 22.353 3224100200026 5.45 128.926 28.364 3224100200027 5.72 92.535 20.358 3224100200028 6.02 102.677 22.589 3224100200029 6.46 98.545 21.68 3224100200030 6.75 87.037 19.148 3224100200031 7.13 75.3 7.154 3224100200032 7.54 61.217 5.816 3224100200033 7.92 49.767 4.728 3224100200034 8.22 38.811 3.687 3224100200035 8.55 27.857 2.646 3224100200036 8.76 19.583 1.86 3224100200037 9.01 12.936 3.881 3224100200038 9.25 7.238 2.172 3224100200039 9.55 5.195 1.559 3224100200040 9.82 3.652 1.096 3224100200041 10.2 2.363 0.709 3224100200042 10.47 1.561 0.468 3224100200043 10.66 0.911 0.273 3224100200044 10.82 0.565 0.17 3224100200045 11.01 0.358 0.116 3224100200046 11.23 0.218 0.077 3224100200047 11.5 0.141 0.049 3224100200048 11.91 0.117 0.034 3224100200049 12.42 0.129 0.056 3224100200050 12.8 0.127 0.065 3224100200051 13.37 0.137 0.056 3224100200052 13.97 0.142 0.064 3224100200053 14.46 0.15 0.07 3224100200054 14.97 0.147 0.052 3224100200055 15.57 0.15 0.076 3224100200056 16.03 0.15 0.09 3224100200057 16.49 0.143 0.081 3224100200058 16.9 0.146 0.095 3224100200059 17.33 0.146 0.086 3224100200060 17.74 0.144 0.085 3224100200061 18.18 0.142 0.102 3224100200062 18.64 0.148 0.107 3224100200063 19.1 0.15 0.1 3224100200064 19.59 0.146 0.098 3224100200065 20.05 0.148 0.099 3224100200066 ENDDATA 52 0 3224100200067 ENDSUBENT 66 0 3224100299999 ENDENTRY 2 0 3224199999999