ENTRY 30693 20090905 31403069300000001 SUBENT 30693001 20090905 31403069300100001 BIB 15 35 3069300100002 INSTITUTE (3CPRAEP) 3069300100003 REFERENCE (J,CNP,3,(1),47,198102) in Chinese 3069300100004 (J,SCS,25,(5),502,198205) in English 3069300100005 AUTHOR (Ye Zhongyuan, Li Jingwen, Zhou Shuhua, Hao Xiuhong) 3069300100006 TITLE The measurement of fragment angular distributions for 3069300100007 the U-238(n,f) fission reaction near threshold 3069300100008 FACILITY (VDG,3CPRFUD) At Fudan University in Shanghai 3069300100009 INC-SOURCE (P-T) 2.6 MeV protons on 0.4 milli-gram/cm2 titanium 3069300100010 tritide target. 3069300100011 SAMPLE U-238 abundance 99.9%, thickness=0.3-0.6 mg/cm2, 3069300100012 diameter=8 mm, electroplated on stainless steel backing3069300100013 METHOD Direct detection of fission fragments 3069300100014 DETECTOR (TRD) Evacuated cylindrical solid state track detector 3069300100015 chamber with a sheet of polyester foil(20 micro-meter 3069300100016 thick and 30 mm wide) fixed on the inner wall of the 3069300100017 chamber, and 3069300100018 (PLATE) nuclear emulsion loaded with natural 3069300100019 uranyl nitrate were used for fission fragment 3069300100020 measurements. 3069300100021 ANALYSIS Least square Legendre fit of angular distribution, 3069300100022 Legendre-coefficients are of the form 3069300100023 W(theta)=sum(a(2l)*p(2l)) 3069300100024 PART-DET (FF) 3069300100025 STATUS (TABLE) Data taken from Table 2 of the 3069300100026 J,SCS,25,(5),502,198205 3069300100027 CORRECTION In the case where the solid state track detector was 3069300100028 used, data have been corrected for the influence of 3069300100029 angular resolution by the uranium sample size and 3069300100030 measured area. 3069300100031 ERR-ANALYS (ERR-S) Error given in data table only includes 3069300100032 statistical error. Energy resolution due to proton 3069300100033 energy spread and the angle subtended by 3069300100034 the fission sample. 3069300100035 HISTORY (19851030C) Compiled by Liang Qichang and M. Lammer 3069300100036 (20090725A) SD:Updated to new date formats,lower case. 3069300100037 ENDBIB 35 0 3069300100038 NOCOMMON 0 0 3069300100039 ENDSUBENT 38 0 3069300199999 SUBENT 30693002 20090905 31403069300200001 BIB 2 3 3069300200002 REACTION (92-U-238(N,F),,DA,FF,LEG/RSD) 3069300200003 FLAG (1.) Measured with solid state track detector 3069300200004 (2.) measured with nuclear emulsion 3069300200005 ENDBIB 3 0 3069300200006 NOCOMMON 0 0 3069300200007 DATA 6 22 3069300200008 EN EN-RSL NUMBER DATA ERR-S FLAG 3069300200009 MEV MEV NO-DIM NO-DIM NO-DIM NO-DIM 3069300200010 8.6000E-01 3.0000E-02 0.0000E+00 1.1080E+00 1.8000E-02 2. 3069300200011 8.6000E-01 3.0000E-02 2.0000E+00 1.4900E-01 3.5000E-02 2. 3069300200012 8.6000E-01 3.0000E-02 4.0000E+00-8.7000E-02 4.2000E-02 2. 3069300200013 1.1600E+00 3.0000E-02 0.0000E+00 1.2060E+00 1.9000E-02 2. 3069300200014 1.1600E+00 3.0000E-02 2.0000E+00 3.1800E-01 3.9000E-02 2. 3069300200015 1.1600E+00 3.0000E-02 4.0000E+00-3.9000E-02 5.2000E-02 2. 3069300200016 1.1600E+00 3.0000E-02 6.0000E+00 1.0400E-01 5.8000E-02 2. 3069300200017 1.3300E+00 3.0000E-02 0.0000E+00 1.0980E+00 2.2000E-02 1. 3069300200018 1.3300E+00 3.0000E-02 2.0000E+00 1.3700E-01 4.8000E-02 1. 3069300200019 1.3300E+00 3.0000E-02 4.0000E+00-7.8000E-02 7.7000E-02 1. 3069300200020 1.5500E+00 2.0000E-02 0.0000E+00 1.1730E+00 9.0000E-03 1. 3069300200021 1.5500E+00 2.0000E-02 2.0000E+00 3.3300E-01 1.7000E-02 1. 3069300200022 1.5500E+00 2.0000E-02 4.0000E+00-1.6000E-02 2.4000E-02 1. 3069300200023 1.6300E+00 2.0000E-02 0.0000E+00 1.3050E+00 2.2000E-02 2. 3069300200024 1.6300E+00 2.0000E-02 2.0000E+00 5.3800E-01 4.4000E-02 2. 3069300200025 1.6300E+00 2.0000E-02 4.0000E+00-3.6000E-02 5.5000E-02 2. 3069300200026 1.7900E+00 2.0000E-02 0.0000E+00 1.0660E+00 1.4000E-02 2. 3069300200027 1.7900E+00 2.0000E-02 2.0000E+00 1.2500E-01 2.6000E-02 2. 3069300200028 1.7900E+00 2.0000E-02 4.0000E+00-1.0000E-02 3.2000E-02 2. 3069300200029 1.8000E+00 2.0000E-02 0.0000E+00 1.0330E+00 1.8000E-02 1. 3069300200030 1.8000E+00 2.0000E-02 2.0000E+00 7.8000E-02 3.8000E-02 1. 3069300200031 1.8000E+00 2.0000E-02 4.0000E+00 1.6000E-02 5.7000E-02 1. 3069300200032 ENDDATA 24 0 3069300200033 ENDSUBENT 32 0 3069300299999 SUBENT 30693003 20090905 31403069300300001 BIB 2 3 3069300300002 REACTION (92-U-238(N,F),,DA,FF,RSD) Angular anisotropy 3069300300003 STATUS (DEP,30693002) Derived from Legendre fit to 3069300300004 measured angular distribution 3069300300005 ENDBIB 3 0 3069300300006 COMMON 1 3 3069300300007 ANG 3069300300008 ADEG 3069300300009 0.0000E+00 3069300300010 ENDCOMMON 3 0 3069300300011 DATA 4 7 3069300300012 EN EN-RSL DATA ERR-S 3069300300013 MEV MEV NO-DIM NO-DIM 3069300300014 8.6000E-01 3.0000E-02 1.1700E+00 1.5000E-01 3069300300015 1.1600E+00 3.0000E-02 1.5900E+00 1.5000E-01 3069300300016 1.3300E+00 3.0000E-02 1.1600E+00 1.0000E-01 3069300300017 1.5500E+00 2.0000E-02 1.4900E+00 3.0000E-02 3069300300018 1.6300E+00 2.0000E-02 1.8500E+00 2.0000E-02 3069300300019 1.7900E+00 2.0000E-02 1.1800E+00 2.0000E-02 3069300300020 1.8000E+00 2.0000E-02 1.1300E+00 4.0000E-02 3069300300021 ENDDATA 9 0 3069300300022 ENDSUBENT 21 0 3069300399999 ENDENTRY 3 0 3069399999999