ENTRY C0782 20170519 C167C078200000001 SUBENT C0782001 20170519 C167C078200100001 BIB 12 21 C078200100002 TITLE Possible production of actinide spontaneous fission C078200100003 activities in damped collisions of 209Bi+56Fe C078200100004 AUTHOR (V.E.Viola Jr,A.C.Mignerey,H.Breuer,K.L.Wolf, C078200100005 B.G.Glagola,W.W.Wilcke,W.U.Schroder,J.R.Huizenga, C078200100006 D.Hilscher,J.R.Birkelund) C078200100007 REFERENCE (J,PR/C,22,122,1980) C078200100008 #doi:10.1103/PhysRevC.22.122 C078200100009 REL-REF (I,,H.Breuer+,J,PRL,43,191,1979) Experimental details C078200100010 INSTITUTE (1USAMRY,1USAANL,1USAROC) C078200100011 FACILITY (LINAC,1USABRK) Lawrence Berkeley Laboratory Super C078200100012 HILAC accelerator. C078200100013 SAMPLE Self-supporting targets of ~500 microg/cm2 metallic C078200100014 bismuth. C078200100015 METHOD (EDE,TOF) C078200100016 DETECTOR (TELES,SIBAR,SIBAR) C078200100017 ANALYSIS Production cross sections of the target-like fragments C078200100018 were determined by detection of the projectile-like C078200100019 fragments assuming binary reaction. C078200100020 COMMENT Spontaneous fission 234,236,238,240Cf and a-decay C078200100021 values for 234,236,238Cf are estimates. C078200100022 HISTORY (20170519C) BP C078200100023 ENDBIB 21 0 C078200100024 COMMON 1 3 C078200100025 EN C078200100026 MEV C078200100027 464.0 C078200100028 ENDCOMMON 3 0 C078200100029 ENDSUBENT 28 0 C078200199999 SUBENT C0782002 20170519 C167C078200200001 BIB 3 17 C078200200002 REACTION (83-BI-209(26-FE-56,X)ELEM/MASS,,SIG,,MSC) Primary C078200200003 yields (Cross sections including production of C078200200004 target-like fragments before particle emission or C078200200005 fission) C078200200006 ANALYSIS The energy loss (Eloss) distribution for Z=14 is C078200200007 found to have a most probable Eloss value of 240 MeV C078200200008 and an FWHM of about 40 MeV. As a consequence, even C078200200009 for rather large values of projectile energy loss, C078200200010 diffusion processes which transfer a large net. C078200200011 number of nucleons yield products which are formed in C078200200012 relatively low states of excitation. The excitation C078200200013 energy of the primary fragments was assumed to be C078200200014 determined by the energy loss (divided according to C078200200015 the mass ratio of the fragments) and the calculated Q C078200200016 values. The yields were then integrated over all C078200200017 Eloss values and tabulated. C078200200018 STATUS (TABLE) Table IV, page 125. C078200200019 ENDBIB 17 0 C078200200020 NOCOMMON 0 0 C078200200021 DATA 5 9 C078200200022 ELEMENT MASS DATA DATA-MIN DATA-MAX C078200200023 NO-DIM NO-DIM NB NB NB C078200200024 95.0 240.0 80000.0 200000.0 C078200200025 95.0 242.0 2000.0 20000.0 C078200200026 95.0 244.0 20.0 500.0 C078200200027 98.0 234.0 300.0 C078200200028 98.0 236.0 10000.0 C078200200029 98.0 238.0 100000.0 C078200200030 100.0 242.0 200000.0 C078200200031 100.0 244.0 600000.0 C078200200032 100.0 246.0 600000.0 C078200200033 ENDDATA 11 0 C078200200034 ENDSUBENT 33 0 C078200299999 SUBENT C0782003 20170519 C167C078200300001 BIB 3 7 C078200300002 REACTION (83-BI-209(26-FE-56,X)ELEM/MASS,,SIG,,,DERIV) C078200300003 Final yields C078200300004 ANALYSIS In order to estimate the final cross sections, we have C078200300005 calculated the probabilities for deexcitation as a C078200300006 function of Eloss assuming neutron emission and C078200300007 fission are the major decay channels. C078200300008 STATUS (TABLE) Table IV, page 125. C078200300009 ENDBIB 7 0 C078200300010 NOCOMMON 0 0 C078200300011 DATA 5 9 C078200300012 ELEMENT MASS DATA DATA-MIN DATA-MAX C078200300013 NO-DIM NO-DIM NB NB NB C078200300014 95.0 240.0 0.7 30.0 C078200300015 95.0 242.0 0.5 20.0 C078200300016 95.0 244.0 0.1 5.0 C078200300017 98.0 234.0 0.02 C078200300018 98.0 236.0 0.1 C078200300019 98.0 238.0 0.3 C078200300020 100.0 242.0 0.05 C078200300021 100.0 244.0 0.10 C078200300022 100.0 246.0 0.05 C078200300023 ENDDATA 11 0 C078200300024 ENDSUBENT 23 0 C078200399999 SUBENT C0782004 20170519 C167C078200400001 BIB 3 6 C078200400002 REACTION (83-BI-209(26-FE-56,X)ELEM,,SIG,,MSC) Primary yields C078200400003 (Cross sections including production of target-like C078200400004 fragments before particle emission or fission) C078200400005 ANALYSIS The mass-, angle-, and energy-integrated cross C078200400006 sections for Z = 90-100 primary yields. C078200400007 STATUS (TABLE) Table III, page 124. C078200400008 ENDBIB 6 0 C078200400009 NOCOMMON 0 0 C078200400010 DATA 2 11 C078200400011 ELEMENT DATA C078200400012 NO-DIM MB C078200400013 90.0 62.0 C078200400014 91.0 40.0 C078200400015 92.0 24.0 C078200400016 93.0 18.0 C078200400017 94.0 13.0 C078200400018 95.0 10.0 C078200400019 96.0 10.0 C078200400020 97.0 6.0 C078200400021 98.0 4.0 C078200400022 99.0 4.0 C078200400023 100.0 4.0 C078200400024 ENDDATA 13 0 C078200400025 ENDSUBENT 24 0 C078200499999 ENDENTRY 4 0 C078299999999