ENTRY O1725 20110125 O044O172500000001 SUBENT O1725001 20110125 O044O172500100001 BIB 11 55 O172500100002 TITLE On the photon self-absorption correction for thin- O172500100003 target-yields vs. thick-target-yields in radionuclide O172500100004 production. O172500100005 AUTHOR (Z.B.Alfassi, E.Persico, F.Groppi, M.L.Bonardi) O172500100006 REFERENCE (J,ARI,67,240,2009) Digitizing data O172500100007 (J,ARI,68,1595,2010) Digitizing data O172500100008 (J,RCA,99,1,2011) Table data O172500100009 INSTITUTE (3ISLNEG) O172500100010 (2ITYMIL) O172500100011 FACILITY (CYCLO,2ZZZISP) O172500100012 SAMPLE Thick targets W-natural isotopic composition and O172500100013 several 500 mg of highly enriched 99.9% W-186 powder O172500100014 and W-180 0.001%, W-182 0.01%, W-183W 0.005%, W-184 O172500100015 0.09% were used. O172500100016 The powdered targets were pressed up to 15M Pabyan O172500100017 hydraulic crystallography press in between two O172500100018 accurately measured high purity Al foils, 10 mm of O172500100019 nominal diameter, 120 and 200 mm thick. During the O172500100020 irradiation,the Al-W-186-Al stacks were enveloped O172500100021 in between other two further calibrated high purity O172500100022 12 mm Al foils, 99.999%, 20*20 mm**2 area in order to O172500100023 prevent any losses and contaminations of activated O172500100024 W-186 powder during and /or after their radiation, i.e.O172500100025 these sheets ware taken away after their radiation. O172500100026 The Al foils thickness was chosen in order to obtain O172500100027 values of the energies incident on the enriched W-186 O172500100028 targets comparable for protons (13.6+-0.2 MeV) and O172500100029 deuterons(13.4+-0.2 MeV) beams. O172500100030 DETECTOR (HPGE) 8 HPGe detectors, 15-40% relative efficiency, O172500100031 1.9-2.3 keV FWHM for Co-60 and peak to Compton ratio O172500100032 30:1 at 1.33 MeV O172500100033 METHOD (SITA) O172500100034 ERR-ANALYS (ERR-S,,0.1).Statistical error on the net peak counts. O172500100035 (ERR-1,1.,2.).Error in integrated beam charge. O172500100036 Typical over all relative type error of 4.5%. The O172500100037 systematic errors were not taking in to account- O172500100038 decay half-life, gamma emission intensity, decay O172500100039 branching. O172500100040 (ERR-2) calibration 226Ra source uncertainty (1.5%) O172500100041 (ERR-3) calibration 152Eu source uncertainty (2.0%) O172500100042 (ERR-4) calibration 133 Ba source uncertainty (3.0%) O172500100043 (ERR-5,,1.) fitting of the detector efficiency O172500100044 curves (< 1%), O172500100045 with a typical overall relative type A error of 4.5%.O172500100046 ** The systematic errors(ISO type B)were not taking O172500100047 into account, i.e.: O172500100048 * decay half-life, O172500100049 * gamma emission intensity, O172500100050 * decay branching O172500100051 (DATA-ERR).The error is reported by authors. O172500100052 (EN-ERR).The error is reported by authors. O172500100053 STATUS (TABLE).Table 4,6 of J,RCA,99,1,2011 O172500100054 HISTORY (20090409C) SB O172500100055 (20110125A) Digitizing data were replace by table O172500100056 of J,RCA,99,1,2011. New reference were added. O172500100057 ENDBIB 55 0 O172500100058 COMMON 4 3 O172500100059 ERR-2 ERR-3 ERR-4 EN-ERR O172500100060 PER-CENT PER-CENT PER-CENT MEV O172500100061 1.5 2.0 3.0 0.2 O172500100062 ENDCOMMON 3 0 O172500100063 ENDSUBENT 62 0 O172500199999 SUBENT O1725002 20110125 O044O172500200001 BIB 3 7 O172500200002 REACTION (74-W-0(P,X)75-RE-186-G,,TTY,,PHY) O172500200003 the yield per a Constance electronic charge. O172500200004 STATUS (TABLE).Table 4 of J,RCA,99,1,2011 O172500200005 CORRECTION Thick-target yields for the production of O172500200006 Re-186-g from W-nat targets corrected for the O172500200007 self-absorption of low energy emitted photons like O172500200008 137.155 and 122.58 keV. O172500200009 ENDBIB 7 0 O172500200010 NOCOMMON 0 0 O172500200011 DATA 3 6 O172500200012 EN DATA DATA-ERR O172500200013 MEV MBQ/COUL MBQ/COUL O172500200014 8.5 35. 4. O172500200015 10.5 130. 14. O172500200016 12.5 172. 18. O172500200017 14.5 226. 24. O172500200018 15.0 233. 25. O172500200019 16.5 273. 30. O172500200020 ENDDATA 8 0 O172500200021 ENDSUBENT 20 0 O172500299999 SUBENT O1725003 20110125 O044O172500300001 BIB 3 6 O172500300002 REACTION (74-W-186(P,N)75-RE-186-G,,TTY,,PHY) O172500300003 STATUS (TABLE).Table 6 and value in text at 15.29 MeV O172500300004 of J,RCA,99,1,2011 O172500300005 COMMENT *By author*.Thick target yields of Re-186-g corrected O172500300006 for 137 keV photon absorption and isotopic abundance O172500300007 of W-186(28.43%) O172500300008 ENDBIB 6 0 O172500300009 NOCOMMON 0 0 O172500300010 DATA 3 2 O172500300011 EN DATA DATA-ERR O172500300012 MEV MBQ/COUL MBQ/COUL O172500300013 13.6 746. 31. O172500300014 15.29 843. 42. O172500300015 ENDDATA 4 0 O172500300016 ENDSUBENT 15 0 O172500399999 ENDENTRY 3 0 O172599999999