ENTRY 14589 20191212 14631458900000001 SUBENT 14589001 20191212 14631458900100001 BIB 13 43 1458900100002 TITLE Charged-Particle-Induced Fission: A Mass 1458900100003 Spectrometric Yield Study 1458900100004 AUTHOR (Y.Y.Chu) 1458900100005 REFERENCE (R,UCRL-8926,1959) 1458900100006 REL-REF (R,,D.Strominger+,J,RMP,30,585,1958) Decay data for all1458900100007 nuclides except 155Eu that was measured in the present1458900100008 work. 1458900100009 (O,C2426001,Y.Y.Chu,R,UCRL-8926,1959) Charged particles1458900100010 data. 1458900100011 INSTITUTE (1USABRK,1USAUCX) 1458900100012 FACILITY (REAC,1USALRL) LPTR (Livermore pool-type reactor). 1458900100013 DETECTOR (MAGSP) A single-directional focusing mass 1458900100014 spectrometer with a 60-degree sector and 12-inch radius1458900100015 of curvature. 1458900100016 SAMPLE (92-U-235,ENR=0.932) 1458900100017 (92-U-238,ENR=0.068) The neutron target was made by 1458900100018 sealing the 235U3O8 powder in a quartz capsule tube, 1458900100019 then it was put into an aluminum can for thermal 1458900100020 neutron irradiation. 1458900100021 METHOD (CHSEP,EXTB) A 235U target was irradiated in the 1458900100022 thermal column of the LPTR at Livermore Radiation 1458900100023 Laboratory. The irradiation time was 3 days with a 1458900100024 neutron flux of 6*10**11 neutrons/cm2/sec. The 1458900100025 purification procedure was as follows: Chemically 1458900100026 pure uranium foil was dissolved in concentrated HCl 1458900100027 and a few drops of concentrated HNO3. After the 1458900100028 target was dissolved, the solution was allowed to 1458900100029 cool and divided into two equal samples. To one 1458900100030 sample was added an accurate amount of certain 1458900100031 separated stable isotopes of elements to be measured. 1458900100032 The solution were adjusted and then passed through 1458900100033 two separate anion-exchange columns. The elutants were 1458900100034 then evaporated almost to dryness. Finally, the 1458900100035 individual rare earths were separated and measured 1458900100036 using the mass spectrometer. 1458900100037 ERR-ANALYS (ERR-S) The limits of error are purely statistical; 1458900100038 they are all standard deviations of the measurements. 1458900100039 CORRECTION The corrections are both for decay and for neutron 1458900100040 capture. Since the neutron flux used was rather low, 1458900100041 and the irradiation time was rather short, no capture 1458900100042 correction exceeded 1%. 1458900100043 DECAY-DATA (63-EU-155,4.25YR) 1458900100044 HISTORY (20191210C) BP 1458900100045 ENDBIB 43 0 1458900100046 COMMON 1 3 1458900100047 EN-DUMMY 1458900100048 EV 1458900100049 0.0253 1458900100050 ENDCOMMON 3 0 1458900100051 ENDSUBENT 50 0 1458900199999 SUBENT 14589002 20191212 14631458900200001 BIB 3 7 1458900200002 REACTION ((92-U-235(N,F)MASS,CHN,FY)// 1458900200003 (92-U-235(N,F)MASS,CHN,FY)) 1458900200004 FLAG (1.) Corrected value. 1458900200005 (2.) Corrected for decay. 1458900200006 (3.) Corrected for neutron capture. 1458900200007 (4.) Corrected for both decay and neutron capture. 1458900200008 STATUS (TABLE) Table V, page 33. 1458900200009 ENDBIB 7 0 1458900200010 COMMON 1 3 1458900200011 MASS-DN 1458900200012 NO-DIM 1458900200013 143. 1458900200014 ENDCOMMON 3 0 1458900200015 DATA 4 14 1458900200016 MASS-NM DATA ERR-S FLAG 1458900200017 NO-DIM NO-DIM NO-DIM NO-DIM 1458900200018 140.0 1.05 0.01 1458900200019 142.0 1.00 0.01 1458900200020 143.0 1.00 0.01 1458900200021 144.0 0.90 0.02 1. 1458900200022 145.0 0.66 0.004 1458900200023 146.0 0.50 0.005 1458900200024 147.0 0.38 0.004 2. 1458900200025 148.0 0.282 0.002 1458900200026 149.0 0.186 0.001 3. 1458900200027 151.0 0.070 0.0005 1458900200028 152.0 0.045 0.0003 1458900200029 153.0 0.0276 0.0008 1458900200030 154.0 0.0125 0.0001 1458900200031 155.0 0.00544 0.00016 4. 1458900200032 ENDDATA 16 0 1458900200033 ENDSUBENT 32 0 1458900299999 SUBENT 14589003 20191212 14631458900300001 BIB 3 4 1458900300002 REACTION ((92-U-235(N,F)ELEM/MASS,CUM,FY)/ 1458900300003 (92-U-235(N,F)60-ND-143,CUM,FY)) 1458900300004 FLAG (1.) Matched value of 144Nd. 1458900300005 STATUS (TABLE) Table V, page 33. 1458900300006 ENDBIB 4 0 1458900300007 NOCOMMON 0 0 1458900300008 DATA 5 3 1458900300009 ELEMENT MASS DATA ERR-S FLAG 1458900300010 NO-DIM NO-DIM NO-DIM NO-DIM NO-DIM 1458900300011 58.0 144.0 0.664 0.016 1. 1458900300012 60.0 150.0 0.1095 0.0019 1458900300013 62.0 150.0 0.00023 0.00001 1458900300014 ENDDATA 5 0 1458900300015 ENDSUBENT 14 0 1458900399999 ENDENTRY 3 0 1458999999999