ENTRY C1129 20171114 C172C112900000001 SUBENT C1129001 20171114 C172C112900100001 BIB 10 29 C112900100002 TITLE Spallation reactions of californium-252 with helium C112900100003 ions C112900100004 AUTHOR (T.Sikkeland,S.Amiel,S.G.Thompson) C112900100005 REFERENCE (J,JIN,11,261,1959) C112900100006 #doi:10.1016/0022-1902(59)80039-7 C112900100007 INSTITUTE (1USABRK,1USAUCX) C112900100008 FACILITY (CYCLO,1USADAV) 60 in. cyclotron of the Crocker C112900100009 Laboratory. C112900100010 SAMPLE The 252Cf was prepared from 239Pu by successive C112900100011 neutron-capture and beta-decay reactions in the C112900100012 Materials Testing Reactor. The 252Cf (2.4 x 10-3 C112900100013 microg) was chemically purified and electroplated as C112900100014 a uniform thin deposit on a 0.002 in. thick gold foil C112900100015 in an area of 0.05 cm2. C112900100016 DETECTOR (IOCH) C112900100017 METHOD (CHSEP,REC,ACTIV) The energies of the incident helium C112900100018 ions were reduced to the desired values with C112900100019 aluminium absorbers. The recoil products were C112900100020 collected on gold foils of about 5 mg/cm2 thickness. C112900100021 The gold was dissolved in a mixture of hydrochloric C112900100022 and nitric acids. The fermium, einsteinium and C112900100023 californium isotopes were identified by measurements C112900100024 of their decay properties in an ionization-grid C112900100025 chamber with a forty-eight channel alpha-particle C112900100026 pulse-height analyzer. The decay of the various C112900100027 alpha-particle peaks was usually followed through C112900100028 several half-lives. C112900100029 ERR-ANALYS (ERR-S) The errors given are statistical errors. C112900100030 HISTORY (20171114C) BP C112900100031 ENDBIB 29 0 C112900100032 NOCOMMON 0 0 C112900100033 ENDSUBENT 32 0 C112900199999 SUBENT C1129002 20171114 C172C112900200001 BIB 3 5 C112900200002 REACTION ((98-CF-252(A,N)100-FM-255,,SIG)+ C112900200003 (98-CF-252(A,4N)100-FM-252,,SIG)) C112900200004 RAD-DET (100-FM-255,A) C112900200005 (100-FM-252,A) C112900200006 STATUS (CURVE) Fig. 1, page 262. C112900200007 ENDBIB 5 0 C112900200008 NOCOMMON 0 0 C112900200009 DATA 3 10 C112900200010 EN DATA ERR-S C112900200011 MEV MB MB C112900200012 22.600 2.856E-01 1.402E-01 C112900200013 25.356 8.480E-01 1.765E-01 C112900200014 26.026 1.016E+00 2.025E-01 C112900200015 27.689 1.132E+00 3.411E-01 C112900200016 29.363 1.797E+00 4.550E-01 C112900200017 33.020 2.170E+00 2.756E-01 C112900200018 34.877 2.129E+00 2.320E-01 C112900200019 37.132 2.013E+00 2.376E-01 C112900200020 39.529 2.568E+00 2.799E-01 C112900200021 40.268 3.341E+00 3.036E-01 C112900200022 ENDDATA 12 0 C112900200023 ENDSUBENT 22 0 C112900299999 SUBENT C1129003 20171114 C172C112900300001 BIB 3 3 C112900300002 REACTION (98-CF-252(A,2N)100-FM-254,,SIG) C112900300003 RAD-DET (100-FM-254,A) C112900300004 STATUS (CURVE) Fig. 1, page 262. C112900300005 ENDBIB 3 0 C112900300006 NOCOMMON 0 0 C112900300007 DATA 3 9 C112900300008 EN DATA ERR-S C112900300009 MEV MB MB C112900300010 22.577 1.105E+00 5.558E-01 C112900300011 25.271 3.626E+00 6.575E-01 C112900300012 26.003 3.898E+00 8.465E-01 C112900300013 27.624 9.145E+00 1.079E+00 C112900300014 29.412 8.266E+00 9.749E-01 C112900300015 32.916 5.432E+00 5.919E-01 C112900300016 34.903 4.778E+00 5.634E-01 C112900300017 39.549 4.679E+00 5.516E-01 C112900300018 40.278 4.591E+00 6.249E-01 C112900300019 ENDDATA 11 0 C112900300020 ENDSUBENT 19 0 C112900399999 SUBENT C1129004 20171114 C172C112900400001 BIB 3 3 C112900400002 REACTION (98-CF-252(A,3N)100-FM-253,,SIG) C112900400003 DECAY-DATA (100-FM-253,3.0D,A,6.95) C112900400004 STATUS (CURVE) Fig. 1, page 262. C112900400005 ENDBIB 3 0 C112900400006 NOCOMMON 0 0 C112900400007 DATA 3 6 C112900400008 EN DATA ERR-S C112900400009 MEV MB MB C112900400010 29.333 7.052E-01 C112900400011 33.010 1.608E+00 2.549E-01 C112900400012 34.889 3.033E+00 5.492E-01 C112900400013 37.081 3.258E+00 3.629E-01 C112900400014 39.536 3.137E+00 3.242E-01 C112900400015 40.277 4.468E+00 7.084E-01 C112900400016 ENDDATA 8 0 C112900400017 ENDSUBENT 16 0 C112900499999 SUBENT C1129005 20171114 C172C112900500001 BIB 3 3 C112900500002 REACTION (98-CF-252(A,X)99-ES-254,,SIG) C112900500003 RAD-DET (99-ES-254,A) C112900500004 STATUS (CURVE) Fig. 2, page 262. C112900500005 ENDBIB 3 0 C112900500006 NOCOMMON 0 0 C112900500007 DATA 3 6 C112900500008 EN DATA ERR-S C112900500009 MEV MB MB C112900500010 29.248 1.497E-01 C112900500011 33.048 1.981E+00 4.159E-01 C112900500012 34.830 2.207E+00 4.316E-01 C112900500013 37.005 2.186E+00 1.118E+00 C112900500014 39.323 4.158E+00 7.826E-01 C112900500015 40.190 7.561E+00 7.794E-01 C112900500016 ENDDATA 8 0 C112900500017 ENDSUBENT 16 0 C112900599999 SUBENT C1129006 20171114 C172C112900600001 BIB 3 3 C112900600002 REACTION (98-CF-252(A,X)99-ES-253,,SIG) C112900600003 RAD-DET (99-ES-253,A) C112900600004 STATUS (CURVE) Fig. 2, page 262. C112900600005 ENDBIB 3 0 C112900600006 NOCOMMON 0 0 C112900600007 DATA 3 6 C112900600008 EN DATA ERR-S C112900600009 MEV MB MB C112900600010 26.020 1.797E-01 C112900600011 29.293 2.487E+00 4.681E-01 C112900600012 32.932 5.369E+00 5.973E-01 C112900600013 34.846 6.148E+00 5.834E-01 C112900600014 39.332 7.163E+00 8.537E-01 C112900600015 40.257 8.278E+00 4.381E-01 C112900600016 ENDDATA 8 0 C112900600017 ENDSUBENT 16 0 C112900699999 ENDENTRY 6 0 C112999999999