ENTRY 31636 20120405 31553163600000001 SUBENT 31636001 20120405 31553163600100001 BIB 10 51 3163600100002 TITLE Measurement of differential and angle-integrated cross 3163600100003 sections of the 64Zn(n,a)61Ni reaction at 5.0 and 6.0 3163600100004 MeV 3163600100005 AUTHOR (Yu.M.Gledenov, M.V.Sedysheva, Guohui Zhang, 3163600100006 Rongtai Cao, Jinxiang Chen, Guoyou Tang, 3163600100007 G.Khuukhenkhuu) 3163600100008 INSTITUTE (4ZZZDUB,3CPRBJG,3MGLNUM) 3163600100009 REFERENCE ((S,ISINN-14,223,2007)=(S,JINR-E3-2007-23,223,2007)) 3163600100010 FACILITY (VDG,3CPRBJG)4.5 MV Van de Graaff accelerator of the 3163600100011 institute of Heavy Ion Physics, Peking University. 3163600100012 INC-SOURCE (D-D) Approximate to monoenergetic neutrons were 3163600100013 produced through the D(d,n)3He reaction with a 3163600100014 deuterium gas target 2.0 cm in length and 3.2-3.5 atm 3163600100015 in pressure. 3163600100016 SAMPLE The two 64Zn samples were set back-to-back, it allows 3163600100017 to registrate the forward (0. to 90.deg.) and 3163600100018 backward (90. to 180.deg.) alpha events at the same 3163600100019 time. 3163600100020 The thickness of the Zn targets was 266.3 ug/cm2 and 3163600100021 the mass was 4.05 +- 0.05 mg for each sample. 3163600100022 The abundance of 64Zn was 99.4%. Each sample was 3163600100023 evaporated on a tantalum backing 4.8 cm in diameter 3163600100024 and 50 um in thickness. 3163600100025 For background measurement, there were two tantalum 3163600100026 films back-to -back were used. 3163600100027 A 238U fission foil was placed at the backward. 3163600100028 The purity of the sample was 99.999%. 3163600100029 The mass and the diameter of the sample were 7.85 +/- 3163600100030 0.10 mg. 3163600100031 DETECTOR (IOCH) The twin grid ionization chamber was 3163600100032 constructed at Frank Laboratory of Neutron Physics, 3163600100033 Dubna Russia. 3163600100034 (BF3) A relatively calibrated BF3 long counter was 3163600100035 used as a neutron flux monitor. 3163600100036 The absolute neutron flux for 5.0 MeV was determined 3163600100037 by counting the 238U fission fragments. 3163600100038 The 238U(n,f) cross section was taken from the 3163600100039 ENDF/B-VI library. 3163600100040 ERR-ANALYS (ERR-SYS) The scale errors come from: 3163600100041 (ERR-1) - number of the atoms in 64Zn (1.2%) 3163600100042 - neutron flux determination 3163600100043 3.6% (5.0 MeV) and 4.2% (6.0 MeV) 3163600100044 (including the uncertainty of the fission 3163600100045 counts 2.2%, the error of the reference 3163600100046 cross section at 5.0 MeV 2.6%, the 238U 3163600100047 atom number error l.3%, and the BF3 3163600100048 relative efficiency shape error in 5-6 MeV 3163600100049 range 2.0%). 3163600100050 HISTORY (20080820C) LV, SD. 3163600100051 (20081229U) On. AUTHOR and INSTITUTE corrected 3163600100052 (20120405D) On. 003 deleted (duplication of 31614.003) 3163600100053 ENDBIB 51 0 3163600100054 NOCOMMON 0 0 3163600100055 ENDSUBENT 54 0 3163600199999 SUBENT 31636002 20080820 31303163600200001 BIB 3 8 3163600200002 REACTION (30-ZN-64(N,A)28-NI-61,,DA) 3163600200003 ERR-ANALYS (COS-ERR-D) digitizing error 3163600200004 (ERR-DIG) digitizing error 3163600200005 (DATA-ERR)The errors include: 3163600200006 * statistical errors (3~6%), 3163600200007 * background subtraction errors (4~6%) 3163600200008 * 90.degr. line determination uncertainties (2~4%). 3163600200009 STATUS (CURVE)Figures 5 and 6 from reference. 3163600200010 ENDBIB 8 0 3163600200011 COMMON 2 3 3163600200012 COS-ERR-D ERR-DIG 3163600200013 NO-DIM MB/SR 3163600200014 0.003 0.006 3163600200015 ENDCOMMON 3 0 3163600200016 DATA 5 28 3163600200017 EN COS-CM DATA-CM DATA-ERR ERR-SYS 3163600200018 MEV NO-DIM MB/SR MB/SR PER-CENT 3163600200019 5.0000 -.85804 7.0305 0.55137 3.8 3163600200020 5.0000 -.76283 6.9624 0.48874 3.8 3163600200021 5.0000 -.66496 6.3306 0.45093 3.8 3163600200022 5.0000 -.57093 6.5130 0.45117 3.8 3163600200023 5.0000 -.47120 6.1570 0.45093 3.8 3163600200024 5.0000 -.37159 5.8260 0.42588 3.8 3163600200025 5.0000 -.27384 5.2193 0.42588 3.8 3163600200026 5.0000 0.22185 5.4064 0.42611 3.8 3163600200027 5.0000 0.32353 5.9778 0.41359 3.8 3163600200028 5.0000 0.42557 6.4740 0.45117 3.8 3163600200029 5.0000 0.52879 6.7197 0.45093 3.8 3163600200030 5.0000 0.63159 7.0531 0.47598 3.8 3163600200031 5.0000 0.73386 7.4992 0.50104 3.8 3163600200032 5.0000 0.83767 7.6197 0.57619 3.8 3163600200033 6.0000 -.85303 6.3802 0.57847 4.4 3163600200034 6.0000 -.75738 5.9739 0.47550 4.4 3163600200035 6.0000 -.66329 6.0687 0.48851 4.4 3163600200036 6.0000 -.56688 5.4182 0.44980 4.4 3163600200037 6.0000 -.46896 5.2948 0.43694 4.4 3163600200038 6.0000 -.37136 5.2741 0.44996 4.4 3163600200039 6.0000 -.27273 4.9194 0.44996 4.4 3163600200040 6.0000 0.22408 6.0249 0.53992 4.4 3163600200041 6.0000 0.32781 6.0560 0.50120 4.4 3163600200042 6.0000 0.43058 6.3955 0.51405 4.4 3163600200043 6.0000 0.53343 6.7093 0.53975 4.4 3163600200044 6.0000 0.63652 6.9460 0.55261 4.4 3163600200045 6.0000 0.73885 7.4269 0.59132 4.4 3163600200046 6.0000 0.84366 7.1110 0.64273 4.4 3163600200047 ENDDATA 30 0 3163600200048 ENDSUBENT 47 0 3163600299999 NOSUBENT 31636003 20120405 31553163600300001 ENDENTRY 3 0 3163699999999