ENTRY A0139 20160207 A084A013900000001 SUBENT A0139001 20160207 A084A013900100001 BIB 16 70 A013900100002 TITLE Cross sections and thick target yields of (alpha,xn) A013900100003 reactions on natural lead. A013900100004 AUTHOR (C.Wasilevsky, M.de la Vega Vedoya, S.J.Nassiff) A013900100005 REFERENCE (J,RRL,50,(4),211,1982) A013900100006 INSTITUTE (3ARGCNE) A013900100007 FACILITY (SYNCY,3ARGCNE) A013900100008 REL-REF (R,,C.F.Williamson+,R,CEA-R-3042,1966) Range-energy A013900100009 table decay-data tables- A013900100010 (R,,M.R.Schmorak,J,NDS,27,(4),581,1979) A013900100011 (R,,M.R.Schmorak,J,NDS,23,(2),287,1978) A013900100012 (R,,M.P.Webb,J,NDS,26,(1),145,1979) A013900100013 (R,,M.R.Schmorak,J,NDS,22,(4),487,1977) A013900100014 ADD-RES Thick-target yields. A013900100015 Contributions from different reactions were estimated A013900100016 MONITOR (29-CU-63(A,N)31-GA-66,,SIG) A013900100017 (29-CU-65(A,2N)31-GA-67,,SIG) A013900100018 (13-AL-27(A,X)11-NA-22,,SIG) A013900100019 MONIT-REF (B0058006,M.Hille+,J,NP/A,198,625,1972) A013900100020 (B0156001,N.T.Porile+,J,PR,116,1193,1959) A013900100021 (B0079016,E.A.Bryant+,J,PR,130,1512,1963) A013900100022 (A0447001,A.Karpales,J,RCA,12,115,1969) A013900100023 (B0142001,U.Martens+,R,KFK-1083,1969) A013900100024 METHOD (EXTB,STTA,ACTIV) A013900100025 Foil thickness and alpha particles flux were measured A013900100026 and used to calculate production cross sections for A013900100027 each of the active isotopes found in each foil. A013900100028 DETECTOR (GE-IN) Ge intrinsic detector A013900100029 SAMPLE The lead foils were analyzed spectroscopically A013900100030 for interfering impurities, the amounts of these A013900100031 were found to be negligible. The stacks, used for A013900100032 the determination of excitation functions and thick A013900100033 target yields, were during the irradiations interlaid A013900100034 by copper and aluminum foils. A013900100035 ERR-ANALYS (DATA-ERR) Uncertainties in the cross-section values A013900100036 were estimated by propagating in square the A013900100037 contributions for both decay curve and peak analyses A013900100038 /the latter including counting statistics/, A013900100039 absolute detector efficiencies, disintegration A013900100040 schemes, target thicknesses and alpha particles flux. A013900100041 The eventual losses of reaction products by recoil wereA013900100042 assumed to be negligible. A013900100043 As for any reaction that might occur due to secondary A013900100044 neutrons, additional foils were set up beyond the rangeA013900100045 of alpha particles. Spectra from those foils showed no A013900100046 significant contribution to the data. A013900100047 CORRECTION The areas of all gamma-peaks observed were corrected A013900100048 for efficiency of detection and the activities A013900100049 of the radioactive products were calculated separately A013900100050 for each peak on the basis of the nuclear data. No A013900100051 corrections were made either for the energy spread at A013900100052 each foil /as resulting from foil thickness variations/A013900100053 or for energy losses at the preceding foils. A013900100054 COMMENT (By authors) No absolute beam energy determination A013900100055 was performed in this experiment. On the basis of A013900100056 other determinations of the external beam of Buenos A013900100057 Aries synchrocyclotron, we assumed an energy of A013900100058 55.0 MeV for alpha particles with an error of 0.55 MeV A013900100059 in each case the target stack was thick enough to stop A013900100060 the 55.0 MeV external alpha-beam. The uncertainty in A013900100061 the incident particle energy for each data point A013900100062 arises from the energy spread of the incident alpha- A013900100063 particle beam as well as from the straggling energy A013900100064 losses. Effective energy spreads of 0.5 MeV were A013900100065 obtained for 10 MeV alpha-particles. A013900100066 HISTORY (19820808C) A013900100067 (19820916A) A013900100068 (20120120A) NDS(V): REL-REF: ND/B->NDS A013900100069 (20160207A) SD:Updated to new date formats,lower case. A013900100070 Subent 002 split in two, REACTION codes update. A013900100071 ANALYSIS (AREA) deleted (not relevant). A013900100072 ENDBIB 70 0 A013900100073 NOCOMMON 0 0 A013900100074 ENDSUBENT 73 0 A013900199999 SUBENT A0139002 20160207 A084A013900200001 BIB 3 3 A013900200002 REACTION (82-PB-204(A,4N)84-PO-204,,SIG) A013900200003 STATUS (TABLE) Tbl.1 of RRL,50,(4),211,1982 A013900200004 HISTORY (20160207A) SD: Subent split in two (see Subent 003). A013900200005 ENDBIB 3 0 A013900200006 NOCOMMON 0 0 A013900200007 DATA 3 4 A013900200008 EN DATA DATA-ERR A013900200009 MEV MB MB A013900200010 54.5 735. 218. A013900200011 50.8 802. 227. A013900200012 46.0 148. 136. A013900200013 43.7 26.5 26.4 A013900200014 ENDDATA 6 0 A013900200015 ENDSUBENT 14 0 A013900299999 SUBENT A0139003 20160207 A084A013900300001 BIB 3 7 A013900300002 REACTION 5(82-PB-0(A,X)84-PO-205,,SIG,,DAM) A013900300003 6(82-PB-0(A,X)84-PO-206,,SIG,,DAM) A013900300004 7(82-PB-0(A,X)84-PO-207,,SIG,,DAM) A013900300005 STATUS (TABLE) Tbl.1 of RRL,50,(4),211,1982 A013900300006 HISTORY (20160207T) SD: SF8=DAM was added to REACTION (5,6,7) A013900300007 codes according to its presentation in the Tbl. 1. A013900300008 Po-207g->Po-207, SF5=M+ deleted from REACTION (7) code.A013900300009 ENDBIB 7 0 A013900300010 NOCOMMON 0 0 A013900300011 DATA 7 12 A013900300012 EN DATA 5DATA-ERR 5DATA 6DATA-ERR 6DATA 7A013900300013 DATA-ERR 7 A013900300014 MEV MB MB MB MB MB A013900300015 MB A013900300016 54.5 0.332 0.0927 2.28 0.282 2.25A013900300017 0.581 A013900300018 50.8 0.0566 0.0238 1.13 0.146 1.38A013900300019 0.357 A013900300020 46.0 0.0443 0.0175 0.268 0.0564 1.41A013900300021 0.366 A013900300022 43.7 0.0382 0.0153 0.208 0.141 1.33A013900300023 0.343 A013900300024 41.4 0.0821 0.0262 0.0946 0.0615 1.31A013900300025 0.340 A013900300026 39.2 0.104 0.0296 0.0569 0.0297 1.11A013900300027 0.289 A013900300028 36.9 0.0321 0.0123 0.0191 0.0192 0.717A013900300029 0.188 A013900300030 34.7 0.00689 0.00794 0.0268 0.0270 0.258A013900300031 0.0692 A013900300032 30.5 0.0316 0.0261 0.0130A013900300033 0.00453 A013900300034 26.0 0.0553 0.0501 0.0164A013900300035 0.00534 A013900300036 23.0 0.0221 0.0223 0.0322A013900300037 0.0222 A013900300038 17.0 0.0656 0.0214A013900300039 A013900300040 ENDDATA 28 0 A013900300041 ENDSUBENT 40 0 A013900399999 ENDENTRY 3 0 A013999999999