ENTRY O1017 20191010 O072O101700000001 SUBENT O1017001 20191010 O072O101700100001 BIB 12 36 O101700100002 TITLE Production of the positron emitter Mn-51 via the O101700100003 Cr-50(d,N) reaction-targetry and separation of no- O101700100004 carrier-added radiomanganese. O101700100005 AUTHOR (A.T.J.Klein, F.Rosch, H.H.Coenen, S.M.Qaim) O101700100006 INSTITUTE (2GERJUL) Institut fuer nuklearchemie. O101700100007 REFERENCE (J,RCA,90,167,2002) O101700100008 COMMENT -By authors. Several separation techniques such as ion O101700100009 exchange chromatography, solid phase extraction, liquidO101700100010 liquid extraction and co-precipitation have been O101700100011 investigated to separate no-carrier-added O101700100012 radiomanganese from the bulk target chromium. For O101700100013 production purposes, a sandwiched pellet of the O101700100014 chemical composition Al(4)Cr-50-Cl(3) was developed as O101700100015 a new target. O101700100016 FACILITY (CYCLO,2GERJUL) The compact cyclotron CV-28. O101700100017 METHOD (GSPEC,CHSEP) O101700100018 (ACTIV) A beam current of 3-muA was applied for 1-hr. O101700100019 SAMPLE Isotopically enriched Cr-50 in metallic form was O101700100020 used, the isotopic composition of was O101700100021 Cr-50 -94.7+-0.4%, O101700100022 Cr-52 -4.84%, O101700100023 Cr-53 -0.37%, O101700100024 Cr-54 -0.09%. O101700100025 The chemical impurities (in ppm) O101700100026 supplier, were- Ti less 30, Mn less 10, Fe less 250, O101700100027 Ni less 40, Cu - 80, Al -780, Si -200 and Ca -150. O101700100028 The Al(4)Cr-50Cl(3) pellet was made by pressing a O101700100029 mixture of 70-mg Cr-50Cl(3) and 50-mg Al powder betweenO101700100030 two polyethylene foils in a pellet press. The pellet O101700100031 thus contained 20-mg of Cr-50. O101700100032 DETECTOR (GELI,HPGE) O101700100033 ERR-ANALYS The information about errors is absent. O101700100034 STATUS (TABLE) Tbl.2 from Radiochim.Acta,90(2002)167 O101700100035 HISTORY (20021210C) O101700100036 (20021229U) Last checking has been done. O101700100037 (20191010A) SD: REACTION code corrected in Subent 002. O101700100038 ENDBIB 36 0 O101700100039 NOCOMMON 0 0 O101700100040 ENDSUBENT 39 0 O101700199999 SUBENT O1017002 20191010 O072O101700200001 BIB 4 11 O101700200002 REACTION (24-CR-CMP(D,X)ELEM/MASS,,TTY,,EOB) O101700200003 COMMENT From authors: yields normalized to 1uA-h. O101700200004 DECAY-DATA ((1.)25-MN-51,46.2MIN) O101700200005 ((2.)25-MN-52-M,21.1MIN) O101700200006 ((3.)25-MN-52-G,5.6D) O101700200007 ((4.)24-CR-51,27.7D) O101700200008 ((5.)23-V-48,16.0D) O101700200009 ((6.)17-CL-38-G,37.2MIN) O101700200010 ((7.)11-NA-24,15.0HR) O101700200011 HISTORY (20191010A) SD: SF8=DT -> EOB in REACTION code. O101700200012 TIME-IRRD added. O101700200013 ENDBIB 11 0 O101700200014 COMMON 3 3 O101700200015 EN-MAX EN-MIN TIME-IRRD O101700200016 MEV MEV HR O101700200017 12.8 7.9 1. O101700200018 ENDCOMMON 3 0 O101700200019 DATA 5 7 O101700200020 ELEMENT MASS ISOMER DATA DECAY-FLAG O101700200021 NO-DIM NO-DIM NO-DIM MCI/MUA NO-DIM O101700200022 11. 24. 0.07394 7. O101700200023 17. 38. 0. 0.5495 6. O101700200024 23. 48. 0.002 5. O101700200025 24. 51. 0.0071 4. O101700200026 25. 51. 0.9599 1. O101700200027 25. 52. 1. 0.0562 2. O101700200028 25. 52. 0. 0.0005 3. O101700200029 ENDDATA 9 0 O101700200030 ENDSUBENT 29 0 O101700299999 ENDENTRY 2 0 O101799999999