ENTRY C2559 20200812 C198C2559 0 1 SUBENT C2559001 20200812 C198C2559 1 1 BIB 12 43 C2559 1 2 TITLE Relative cross-sections for formation of the shielded C2559 1 3 isomeric pair 134mCs and 134Cs in medium energy fissionC2559 1 4 AUTHOR (H.Warhanek,R.Vandenbosch) C2559 1 5 REFERENCE (J,JIN,26,669,1964) C2559 1 6 #doi:10.1016/0022-1902(64)80308-0 C2559 1 7 REL-REF (O,L0261002,H.Warhanek+,J,JIN,26,669,1964) C2559 1 8 Photonuclear data from the same experiment. C2559 1 9 INSTITUTE (1USAANL,2AUSIRK) C2559 1 10 FACILITY (CYCLO,1USAANL) The Argonne 60 in. cyclotron. C2559 1 11 SAMPLE Targets of U-233, U-235, U-238 and Np-237. Usually C2559 1 12 uranium metal foils about 0.002 in. thick were used C2559 1 13 as targets. They were covered with pure Al foils C2559 1 14 which acted as catcher foils for the fission C2559 1 15 products. In most experiments only the catcher foils C2559 1 16 were used for preparing the samples, enabling C2559 1 17 repeated use of the valuable fissionable foils. By C2559 1 18 bombarding a blank aluminum foil alone it was shown C2559 1 19 that no disturbing activity was produced in the C2559 1 20 catcher foils. C2559 1 21 DETECTOR (NAICR,SCIN) Two 3 in. x 3 in. NaI(T1) crystals. C2559 1 22 METHOD (CHSEP,ACTIV,COINC) The chemical separation of cesium C2559 1 23 was done essentially by two consecutive ironhydroxide C2559 1 24 precipitations preceded and followed by C2559 1 25 precipitations of cesium as cesium-perchlorate. C2559 1 26 Initially, the gamma-spectrum was measured with a 3 C2559 1 27 in. by 3 in. NaI(T1) crystal with conventional C2559 1 28 electronics and a 200-channel pulse height analyzer. C2559 1 29 Aluminum absorbers of appropriate thickness C2559 1 30 prevented beta-particles from entering the crystal. C2559 1 31 At a later stage of the work, Compton anticoincidence C2559 1 32 counting equipment became available. Two 4 in. x 4 C2559 1 33 in. NaI(TI) crystals facing each other and having the C2559 1 34 sample between them were surrounded by a large C2559 1 35 plastic scintillator. Moreover any gamma-ray which is C2559 1 36 in coincidence with another one was counted with C2559 1 37 reduced efficiency since the second gamma ray in the C2559 1 38 cascade could also produce anticoincidence pulses in C2559 1 39 the surrounding plastic scintillator. C2559 1 40 CORRECTION A correction was applied for gamma-absorption in the C2559 1 41 aluminum beta-absorbers. C2559 1 42 DECAY-DATA (55-CS-134-M,2.91HR) Measured by authors. C2559 1 43 (55-CS-134-G,2.1YR) C2559 1 44 HISTORY (20200812C) BP C2559 1 45 ENDBIB 43 0 C2559 1 46 NOCOMMON 0 0 C2559 1 47 ENDSUBENT 46 0 C2559 199999 SUBENT C2559002 20200812 C198C2559 2 1 BIB 4 5 C2559 2 2 REACTION (92-U-238(A,F)55-CS-134-M/T,,SIG/RAT) C2559 2 3 METHOD Single crystal counting: 242Pu fashioning nucleus. C2559 2 4 ERR-ANALYS (DATA-ERR) Considering all possible sources of error C2559 2 5 estimates of the standard deviation to be 15 percent. C2559 2 6 STATUS (TABLE) Table 1, page 672. C2559 2 7 ENDBIB 5 0 C2559 2 8 COMMON 1 3 C2559 2 9 DATA-ERR C2559 2 10 PER-CENT C2559 2 11 15.0 C2559 2 12 ENDCOMMON 3 0 C2559 2 13 DATA 2 2 C2559 2 14 EN DATA C2559 2 15 MEV NO-DIM C2559 2 16 42.0 0.81 C2559 2 17 30.0 0.70 C2559 2 18 ENDDATA 4 0 C2559 2 19 ENDSUBENT 18 0 C2559 299999 SUBENT C2559003 20200812 C198C2559 3 1 BIB 4 5 C2559 3 2 REACTION (92-U-235(A,F)55-CS-134-M/T,,SIG/RAT) C2559 3 3 METHOD Single crystal counting: 239Pu fashioning nucleus. C2559 3 4 ERR-ANALYS (DATA-ERR) Considering all possible sources of error C2559 3 5 estimates of the standard deviation to be 15 percent. C2559 3 6 STATUS (TABLE) Table 1, page 672. C2559 3 7 ENDBIB 5 0 C2559 3 8 COMMON 1 3 C2559 3 9 DATA-ERR C2559 3 10 PER-CENT C2559 3 11 15.0 C2559 3 12 ENDCOMMON 3 0 C2559 3 13 DATA 2 2 C2559 3 14 EN DATA C2559 3 15 MEV NO-DIM C2559 3 16 42.0 0.77 C2559 3 17 27.0 0.56 C2559 3 18 ENDDATA 4 0 C2559 3 19 ENDSUBENT 18 0 C2559 399999 SUBENT C2559004 20200812 C198C2559 4 1 BIB 4 5 C2559 4 2 REACTION (92-U-233(A,F)55-CS-134-M/T,,SIG/RAT) C2559 4 3 METHOD Single crystal counting: 237Pu fashioning nucleus. C2559 4 4 ERR-ANALYS (DATA-ERR) Considering all possible sources of error C2559 4 5 estimates of the standard deviation to be 15 percent. C2559 4 6 STATUS (TABLE) Table 1, page 672. C2559 4 7 ENDBIB 5 0 C2559 4 8 COMMON 1 3 C2559 4 9 DATA-ERR C2559 4 10 PER-CENT C2559 4 11 15.0 C2559 4 12 ENDCOMMON 3 0 C2559 4 13 DATA 2 1 C2559 4 14 EN DATA C2559 4 15 MEV NO-DIM C2559 4 16 42.0 0.69 C2559 4 17 ENDDATA 3 0 C2559 4 18 ENDSUBENT 17 0 C2559 499999 SUBENT C2559005 20200812 C198C2559 5 1 BIB 4 5 C2559 5 2 REACTION (93-NP-237(D,F)55-CS-134-M/T,,SIG/RAT) C2559 5 3 METHOD Single crystal counting: 239Pu fashioning nucleus. C2559 5 4 ERR-ANALYS (DATA-ERR) Considering all possible sources of error C2559 5 5 estimates of the standard deviation to be 15 percent. C2559 5 6 STATUS (TABLE) Table 1, page 672. C2559 5 7 ENDBIB 5 0 C2559 5 8 COMMON 1 3 C2559 5 9 DATA-ERR C2559 5 10 PER-CENT C2559 5 11 15.0 C2559 5 12 ENDCOMMON 3 0 C2559 5 13 DATA 2 1 C2559 5 14 EN DATA C2559 5 15 MEV NO-DIM C2559 5 16 21.0 0.62 C2559 5 17 ENDDATA 3 0 C2559 5 18 ENDSUBENT 17 0 C2559 599999 SUBENT C2559006 20200812 C198C2559 6 1 BIB 4 5 C2559 6 2 REACTION (92-U-235(A,F)55-CS-134-M/T,,SIG/RAT) C2559 6 3 METHOD Anticoincidence counting: 239Pu fashioning nucleus. C2559 6 4 ERR-ANALYS (DATA-ERR) Considering all possible sources of error C2559 6 5 estimates of the standard deviation to be 15 percent. C2559 6 6 STATUS (TABLE) Table 1, page 672. C2559 6 7 ENDBIB 5 0 C2559 6 8 COMMON 1 3 C2559 6 9 DATA-ERR C2559 6 10 PER-CENT C2559 6 11 15.0 C2559 6 12 ENDCOMMON 3 0 C2559 6 13 DATA 2 1 C2559 6 14 EN DATA C2559 6 15 MEV NO-DIM C2559 6 16 42.0 0.58 C2559 6 17 ENDDATA 3 0 C2559 6 18 ENDSUBENT 17 0 C2559 699999 SUBENT C2559007 20200812 C198C2559 7 1 BIB 4 5 C2559 7 2 REACTION (92-U-233(A,F)55-CS-134-M/T,,SIG/RAT) C2559 7 3 METHOD Anticoincidence counting: 237Pu fashioning nucleus. C2559 7 4 ERR-ANALYS (DATA-ERR) Considering all possible sources of error C2559 7 5 estimates of the standard deviation to be 15 percent. C2559 7 6 STATUS (TABLE) Table 1, page 672. C2559 7 7 ENDBIB 5 0 C2559 7 8 COMMON 1 3 C2559 7 9 DATA-ERR C2559 7 10 PER-CENT C2559 7 11 15.0 C2559 7 12 ENDCOMMON 3 0 C2559 7 13 DATA 2 1 C2559 7 14 EN DATA C2559 7 15 MEV NO-DIM C2559 7 16 42.0 0.66 C2559 7 17 ENDDATA 3 0 C2559 7 18 ENDSUBENT 17 0 C2559 799999 SUBENT C2559008 20200812 C198C2559 8 1 BIB 4 7 C2559 8 2 REACTION (92-U-233(A,F)55-CS-134-M/T,,SIG/RAT,,MSC) C2559 8 3 Angular dependence of the isomeric ratio of fragment C2559 8 4 emission angle C2559 8 5 SAMPLE 233U as target-material (1 mg/cm2 thick C2559 8 6 electro-deposited on aluminum backing). C2559 8 7 METHOD Anticoincidence counting. C2559 8 8 STATUS (TABLE) Table 2, page 673. C2559 8 9 ENDBIB 7 0 C2559 8 10 COMMON 1 3 C2559 8 11 EN C2559 8 12 MEV C2559 8 13 42.0 C2559 8 14 ENDCOMMON 3 0 C2559 8 15 DATA 2 2 C2559 8 16 ANG DATA C2559 8 17 ADEG NO-DIM C2559 8 18 90.0 0.69 C2559 8 19 170.0 0.64 C2559 8 20 ENDDATA 4 0 C2559 8 21 ENDSUBENT 20 0 C2559 899999 SUBENT C2559009 20200812 C198C2559 9 1 BIB 4 6 C2559 9 2 REACTION (92-U-235(A,F)55-CS-134-M/T,,SIG/RAT,,MSC) C2559 9 3 Angular dependence of the isomeric ratio of fragment C2559 9 4 emission angle C2559 9 5 SAMPLE 235U (0.002 in. thick metal foil). C2559 9 6 METHOD Anticoincidence counting. C2559 9 7 STATUS (TABLE) Table 2, page 673. C2559 9 8 ENDBIB 6 0 C2559 9 9 COMMON 1 3 C2559 9 10 EN C2559 9 11 MEV C2559 9 12 42.0 C2559 9 13 ENDCOMMON 3 0 C2559 9 14 DATA 2 2 C2559 9 15 ANG DATA C2559 9 16 ADEG NO-DIM C2559 9 17 90.0 0.59 C2559 9 18 170.0 0.57 C2559 9 19 ENDDATA 4 0 C2559 9 20 ENDSUBENT 19 0 C2559 999999 SUBENT C2559010 20200812 C198C2559 10 1 BIB 4 7 C2559 10 2 REACTION (92-U-233(A,F)55-CS-134-M/T,,SIG/RAT,,MSC) C2559 10 3 Angular dependence of the isomeric ratio of fragment C2559 10 4 emission angle relative to 90 degrees. C2559 10 5 METHOD Anticoincidence counting. C2559 10 6 ERR-ANALYS (DATA-ERR) No details on sources of uncertainties. C2559 10 7 STATUS (DEP,C2559008) C2559 10 8 (TABLE) Table 2, page 673. C2559 10 9 ENDBIB 7 0 C2559 10 10 COMMON 1 3 C2559 10 11 EN C2559 10 12 MEV C2559 10 13 42.0 C2559 10 14 ENDCOMMON 3 0 C2559 10 15 DATA 3 1 C2559 10 16 ANG DATA DATA-ERR C2559 10 17 ADEG NO-DIM PER-CENT C2559 10 18 170.0 0.93 10.0 C2559 10 19 ENDDATA 3 0 C2559 10 20 ENDSUBENT 19 0 C2559 1099999 SUBENT C2559011 20200812 C198C2559 11 1 BIB 4 7 C2559 11 2 REACTION (92-U-235(A,F)55-CS-134-M/T,,SIG/RAT,,MSC) C2559 11 3 Angular dependence of the isomeric ratio of fragment C2559 11 4 emission angle relative to 90 degrees. C2559 11 5 METHOD Anticoincidence counting. C2559 11 6 ERR-ANALYS (DATA-ERR) No details on sources of uncertainties. C2559 11 7 STATUS (DEP,C2559009) C2559 11 8 (TABLE) Table 2, page 673. C2559 11 9 ENDBIB 7 0 C2559 11 10 COMMON 1 3 C2559 11 11 EN C2559 11 12 MEV C2559 11 13 42.0 C2559 11 14 ENDCOMMON 3 0 C2559 11 15 DATA 3 1 C2559 11 16 ANG DATA DATA-ERR C2559 11 17 ADEG NO-DIM PER-CENT C2559 11 18 170.0 0.97 10.0 C2559 11 19 ENDDATA 3 0 C2559 11 20 ENDSUBENT 19 0 C2559 1199999 ENDENTRY 11 0 C255999999999