ENTRY 30690 20090915 31403069000000001 SUBENT 30690001 20090915 31403069000100001 BIB 11 33 3069000100002 INSTITUTE (3CPRAEP) 3069000100003 REFERENCE (J,CNP,6,(1),9,198402)In Chinese, graphic only 3069000100004 (J,CP,4,649,1984) English translation of above article 3069000100005 AUTHOR (Ding Shengyao,Xu Jincheng,Liu Zuhua,Liu Shaoming, 3069000100006 Zhang Huanqiao) 3069000100007 TITLE Measurement of nu-bar(Z) for Cf-252 spontaneous fission3069000100008 SAMPLE Cf-252 spontaneous source,fission rate is 3069000100009 1.9 x 10**4/min 3069000100010 METHOD Three parameter correlation measurements,including rec-3069000100011 ording a fragment kinetic energy,prompt neutron average3069000100012 number and K x-rays 3069000100013 DETECTOR (SCIN) 60 cm in diam. gadolinium-loaded liquid 3069000100014 scintillation counter used for neutron measurement 3069000100015 (SIBAR) 16 mm gold coated silicon surface-barrier dete-3069000100016 ctor used for fragment measurement 3069000100017 (SILI) 80 mm2 x 3 mm lithium-drifted silicon detector 3069000100018 used for K x-rays measurement, the resolution is 184eV 3069000100019 for Fe-55 5.9keV gamma-ray 3069000100020 ANALYSIS With three parameter correlation measurement, the nuc- 3069000100021 lear charge number of fission fragments is determined 3069000100022 by its characteristic K x-ray, combined it with the 3069000100023 number of coincidence between fission neutron and 3069000100024 fragment, the nu-bar(Z) distribution is obtained 3069000100025 PART-DET (PN) Prompt neutrons from spontaneous fission 3069000100026 (SF) Fragments from spontaneous fission 3069000100027 (XR) K x-ray only, from fission fragment 3069000100028 HISTORY (19850107C) 3069000100029 (20090915A) SD:Updated to new date formats,lower case. 3069000100030 OS. Subentry 3 deleted because it contains no 3069000100031 additional information. 3069000100032 CORRECTION The experimental average neutron number per fragment 3069000100033 has corrected for neutron detection efficiency and 3069000100034 contribution of neutron from complimentary fragment 3069000100035 ENDBIB 33 0 3069000100036 NOCOMMON 0 0 3069000100037 ENDSUBENT 36 0 3069000199999 SUBENT 30690002 20090905 31403069000200001 BIB 3 6 3069000200002 REACTION (98-CF-252(0,F)ELEM,PR,NU) Nu-bar(Z)=average number 3069000200003 of prompt fission neutrons per fragment with charge Z 3069000200004 STATUS (TABLE) Data taken from private communication 3069000200005 corresponding to fig.4 in Chinese J. of Nucl.Phys. 3069000200006 vol. 6(1) p.9(1984) 3069000200007 ERR-ANALYS (DATA-ERR) No information 3069000200008 ENDBIB 6 0 3069000200009 NOCOMMON 0 0 3069000200010 DATA 3 18 3069000200011 ELEMENT DATA DATA-ERR 3069000200012 NO-DIM PRT/FIS PRT/FIS 3069000200013 3.8000E+01 1.9400E+00 1.1000E-01 3069000200014 3.9000E+01 1.3900E+00 8.0000E-02 3069000200015 4.0000E+01 1.8700E+00 8.0000E-02 3069000200016 4.1000E+01 2.0100E+00 4.0000E-02 3069000200017 4.2000E+01 2.0600E+00 5.0000E-02 3069000200018 4.3000E+01 2.5200E+00 6.0000E-02 3069000200019 4.4000E+01 2.5700E+00 8.0000E-02 3069000200020 4.5000E+01 2.5500E+00 8.0000E-02 3069000200021 4.6000E+01 2.6400E+00 9.0000E-02 3069000200022 5.2000E+01 1.4500E+00 1.1000E-01 3069000200023 5.3000E+01 1.3900E+00 1.0000E-01 3069000200024 5.4000E+01 1.5600E+00 9.0000E-02 3069000200025 5.5000E+01 1.4200E+00 7.0000E-02 3069000200026 5.6000E+01 1.6000E+00 7.0000E-02 3069000200027 5.7000E+01 1.7400E+00 6.0000E-02 3069000200028 5.8000E+01 1.9000E+00 7.0000E-02 3069000200029 5.9000E+01 1.8800E+00 7.0000E-02 3069000200030 6.0000E+01 1.9200E+00 9.0000E-02 3069000200031 ENDDATA 20 0 3069000200032 ENDSUBENT 31 0 3069000299999 NOSUBENT 30690003 20090915 31403069000300001 ENDENTRY 3 0 3069099999999