ENTRY A0139 20240816 A116A0139 0 1 SUBENT A0139001 20240816 A116A0139 1 1 BIB 16 75 A0139 1 2 TITLE Cross sections and thick target yields of (alpha,xn) A0139 1 3 reactions on natural lead. A0139 1 4 AUTHOR (C.Wasilevsky, M.de la Vega Vedoya, S.J.Nassiff) A0139 1 5 REFERENCE (J,RRL,50,(4),211,1982) A0139 1 6 INSTITUTE (3ARGCNE) A0139 1 7 FACILITY (SYNCY,3ARGCNE) A0139 1 8 REL-REF (R,,C.F.Williamson+,R,CEA-R-3042,1966) Energy-range A0139 1 9 table decay-data tables- A0139 1 10 (R,,M.R.Schmorak,J,NDS,27,(4),581,1979) A0139 1 11 (R,,M.R.Schmorak,J,NDS,23,(2),287,1978) A0139 1 12 (R,,M.P.Webb,J,NDS,26,(1),145,1979) A0139 1 13 (R,,M.R.Schmorak,J,NDS,22,(4),487,1977) A0139 1 14 ADD-RES Thick-target yields. A0139 1 15 Contributions from different reactions were estimated A0139 1 16 MONITOR (29-CU-63(A,N)31-GA-66,,SIG) A0139 1 17 (29-CU-65(A,2N)31-GA-67,,SIG) A0139 1 18 (13-AL-27(A,X)11-NA-22,,SIG) A0139 1 19 MONIT-REF (B0058006,M.Hille+,J,NP/A,198,625,1972) A0139 1 20 (B0156001,N.T.Porile+,J,PR,116,1193,1959) A0139 1 21 (B0079016,E.A.Bryant+,J,PR,130,1512,1963) A0139 1 22 (A0447001,A.Karpales,J,RCA,12,115,1969) A0139 1 23 (B0142001,U.Martens+,R,KFK-1083,1969) A0139 1 24 METHOD (EXTB,STTA,ACTIV) A0139 1 25 Foil thickness and alpha particles flux were measured A0139 1 26 and used to calculate production cross sections for A0139 1 27 each of the active isotopes found in each foil. A0139 1 28 DETECTOR (GE-IN) Ge intrinsic detector A0139 1 29 SAMPLE The lead foils were analyzed spectroscopically A0139 1 30 for interfering impurities, the amounts of these A0139 1 31 were found to be negligible. The stacks, used for A0139 1 32 the determination of excitation functions and thick A0139 1 33 target yields, were during the irradiations interlaid A0139 1 34 by copper and aluminum foils. A0139 1 35 ERR-ANALYS (DATA-ERR) Uncertainties in the cross-section values A0139 1 36 were estimated by propagating in square the A0139 1 37 contributions for A0139 1 38 * decay curve and peak analyses including counting A0139 1 39 statistics, A0139 1 40 * absolute detector efficiencies, A0139 1 41 * disintegration schemes, A0139 1 42 * target thicknesses and alpha particles flux. A0139 1 43 - The eventual losses of reaction products by recoil A0139 1 44 were assumed to be negligible. A0139 1 45 - As for any reaction that might occur due to A0139 1 46 secondary neutrons, additional foils were set up A0139 1 47 beyond the range of alpha particles. Spectra from A0139 1 48 those foils showed no significant contribution to A0139 1 49 the data. A0139 1 50 CORRECTION The areas of all gamma-peaks observed were corrected A0139 1 51 for efficiency of detection and the activities A0139 1 52 of the radioactive products were calculated separately A0139 1 53 for each peak on the basis of the nuclear data. A0139 1 54 No corrections were made either for the energy spreadA0139 1 55 at each foil /as resulting from foil thickness A0139 1 56 variations/ or for energy losses at the preceding foilsA0139 1 57 COMMENT *By authors* No absolute beam energy determination A0139 1 58 was performed in this experiment. On the basis of A0139 1 59 other determinations of the external beam of Buenos A0139 1 60 Aries synchrocyclotron, we assumed an energy of A0139 1 61 55.0 MeV for alpha particles with an error of 0.55 MeV A0139 1 62 in each case the target stack was thick enough to stop A0139 1 63 the 55.0 MeV external alpha-beam. The uncertainty in A0139 1 64 the incident particle energy for each data point A0139 1 65 arises from the energy spread of the incident alpha- A0139 1 66 particle beam as well as from the straggling energy A0139 1 67 losses. Effective energy spreads of 0.5 MeV were A0139 1 68 obtained for 10 MeV alpha-particles. A0139 1 69 HISTORY (19820808C) A0139 1 70 (19820916A) A0139 1 71 (20120120A) NDS(V): REL-REF: ND/B->NDS A0139 1 72 (20160207A) SD:Updated to new date formats,lower case. A0139 1 73 Subent 002 was split in two, REACTION codes update. A0139 1 74 ANALYSIS (AREA) deleted (not relevant). A0139 1 75 (20240816A) SD: Corrections in all Subents. A0139 1 76 Subent 003 was split in three. A0139 1 77 ENDBIB 75 0 A0139 1 78 NOCOMMON 0 0 A0139 1 79 ENDSUBENT 78 0 A0139 199999 SUBENT A0139002 20240816 A116A0139 2 1 BIB 3 5 A0139 2 2 REACTION (82-PB-204(A,4N)84-PO-204,,SIG) A0139 2 3 STATUS (TABLE,,C.Wasilevsky+,J,RRL,50,(4),211,1982) Tbl.1 A0139 2 4 HISTORY (20160207A) SD: Subent was split in two A0139 2 5 (see Subent 003). A0139 2 6 (20240816U) SD: STATUS updated. A0139 2 7 ENDBIB 5 0 A0139 2 8 NOCOMMON 0 0 A0139 2 9 DATA 3 4 A0139 2 10 EN DATA DATA-ERR A0139 2 11 MEV MB MB A0139 2 12 54.5 735. 218. A0139 2 13 50.8 802. 227. A0139 2 14 46.0 148. 136. A0139 2 15 43.7 26.5 26.4 A0139 2 16 ENDDATA 6 0 A0139 2 17 ENDSUBENT 16 0 A0139 299999 SUBENT A0139003 20240816 A116A0139 3 1 BIB 3 7 A0139 3 2 REACTION (82-PB-0(A,X)84-PO-205,,SIG,,DAM) A0139 3 3 STATUS (TABLE,,C.Wasilevsky+,J,RRL,50,(4),211,1982) Tbl.1 A0139 3 4 HISTORY (20160207T) SD: SF8=DAM was added to REACTION (5,6,7) A0139 3 5 codes according to its presentation in the Tbl. 1. A0139 3 6 Po-207g->Po-207, SF5=M+ deleted from REACTION (7) code.A0139 3 7 (20240816A) SD: Subent was split in three (see A0139 3 8 Subents 004, 005). STATUS updated. A0139 3 9 ENDBIB 7 0 A0139 3 10 NOCOMMON 0 0 A0139 3 11 DATA 3 8 A0139 3 12 EN DATA DATA-ERR A0139 3 13 MEV MB MB A0139 3 14 54.5 0.332 0.0927 A0139 3 15 50.8 0.0566 0.0238 A0139 3 16 46.0 0.0443 0.0175 A0139 3 17 43.7 0.0382 0.0153 A0139 3 18 41.4 0.0821 0.0262 A0139 3 19 39.2 0.104 0.0296 A0139 3 20 36.9 0.0321 0.0123 A0139 3 21 34.7 0.00689 0.00794 A0139 3 22 ENDDATA 10 0 A0139 3 23 ENDSUBENT 22 0 A0139 399999 SUBENT A0139004 20240816 A116A0139 4 1 BIB 3 3 A0139 4 2 REACTION (82-PB-0(A,X)84-PO-206,,SIG,,DAM) A0139 4 3 STATUS (TABLE,,C.Wasilevsky+,J,RRL,50,(4),211,1982) Tbl.1 A0139 4 4 HISTORY (20240816T) SD: Part of Subent 003. A0139 4 5 ENDBIB 3 0 A0139 4 6 NOCOMMON 0 0 A0139 4 7 DATA 3 11 A0139 4 8 EN DATA DATA-ERR A0139 4 9 MEV MB MB A0139 4 10 54.5 2.28 0.282 A0139 4 11 50.8 1.13 0.146 A0139 4 12 46.0 0.268 0.0564 A0139 4 13 43.7 0.208 0.141 A0139 4 14 41.4 0.0946 0.0615 A0139 4 15 39.2 0.0569 0.0297 A0139 4 16 36.9 0.0191 0.0192 A0139 4 17 34.7 0.0268 0.0270 A0139 4 18 30.5 0.0316 0.0261 A0139 4 19 26.0 0.0553 0.0501 A0139 4 20 23.0 0.0221 0.0223 A0139 4 21 ENDDATA 13 0 A0139 4 22 ENDSUBENT 21 0 A0139 499999 SUBENT A0139005 20240816 A116A0139 5 1 BIB 3 3 A0139 5 2 REACTION (82-PB-0(A,X)84-PO-207,,SIG,,DAM) A0139 5 3 STATUS (TABLE,,C.Wasilevsky+,J,RRL,50,(4),211,1982) Tbl.1 A0139 5 4 HISTORY (20240816T) SD: Part of Subent 003. A0139 5 5 ENDBIB 3 0 A0139 5 6 NOCOMMON 0 0 A0139 5 7 DATA 3 12 A0139 5 8 EN DATA DATA-ERR A0139 5 9 MEV MB MB A0139 5 10 54.5 2.25 0.581 A0139 5 11 50.8 1.38 0.357 A0139 5 12 46.0 1.41 0.366 A0139 5 13 43.7 1.33 0.343 A0139 5 14 41.4 1.31 0.340 A0139 5 15 39.2 1.11 0.289 A0139 5 16 36.9 0.717 0.188 A0139 5 17 34.7 0.258 0.0692 A0139 5 18 30.5 0.0130 0.00453 A0139 5 19 26.0 0.0164 0.00534 A0139 5 20 23.0 0.0322 0.0222 A0139 5 21 17.0 0.0656 0.00214 A0139 5 22 ENDDATA 14 0 A0139 5 23 ENDSUBENT 22 0 A0139 599999 ENDENTRY 5 0 A013999999999