ENTRY O0314 20151201 O056O031400000001 SUBENT O0314001 20151201 O056O031400100001 BIB 12 56 O031400100002 TITLE Formation of Na-24 and P-32 by the interaction O031400100003 of high energy protons with compound nuclei. O031400100004 AUTHOR (A.K.Lavrukhina,L.P.Moskaleva,L.D.Krasavina, O031400100005 I.M.Grechishcheva) O031400100006 INSTITUTE (4RUSGAC).Institute Geo- and Analytic Chemistry. O031400100007 REFERENCE (J,AE,3,285,1957) In Russian O031400100008 (J,SJA,3,1087,1957) English transl. O031400100009 (J,JNE,8,231,1959) In English O031400100010 SAMPLE The targets used were spectrographically pure copper, O031400100011 gold, thorium and lanthanum. O031400100012 The targets were 15 x 5 x *0.5 mm in dimension. O031400100013 FACILITY (SYNCY,4ZZZDUB) O031400100014 ADD-RES (COMP).The Calculated formation thresholds for Na-24 O031400100015 and P-32 in spallation and fission are compared with O031400100016 the experimental values showing that in Cu,La and Au O031400100017 these two nuclei are formed mainly by strongly O031400100018 asymmetric fission. Formation of P-32 from Cu is an O031400100019 exception, being due to spallation and this process is O031400100020 also important in the formation of Na-24 from Cu. O031400100021 METHOD (CHSEP) O031400100022 Sodium was separated from the exposed copper as O031400100023 chloride after the precipitation of copper and bismuth O031400100024 sulphides in weakly acid solution,manganese sulphide inO031400100025 ammoniac solution,iron hydroxide,potassium O031400100026 perchlorate and adsorption of cations from 0.3 H-Cl O031400100027 solution on a chromatographic column packed with KU-2 O031400100028 resin in H+ form. Ammonium salts were removed by O031400100029 roasting. The sodium chloride was reprecipitated and O031400100030 dried at 130 degrees. The exposed lanthanum and gold O031400100031 were analyzed by initially precipitating lanthanum O031400100032 hydroxide with ammonia and precipitating the gold from O031400100033 40% H-Cl solution with SO(2). O031400100034 In the copper analysis, after precipitation of copper O031400100035 sulphide, phosphorus was precipitated as ammonium O031400100036 phosphomolybdate in the presence of 20 mg Be(+2). This O031400100037 precipitation was repeated twice and the precipitate O031400100038 dissolved in concentrated ammonia, phosphorus was O031400100039 separated from this solution using a magnesia mixture O031400100040 (again repeated twice).The Precipitate was dissolved O031400100041 in 0.3 N H-Cl and passed through a chromatographic O031400100042 column packed with KU-2 resin in H+ form, bismuth O031400100043 phosphate was precipitated from the solution and O031400100044 dissolved in H-Cl. The bismuth was removed with H(2)S. O031400100045 Two precipitations of iron cupferronate were carried O031400100046 out. The phosphorus was precipitated finally as O031400100047 zirconium phosphate. After reprecipitation it was O031400100048 roasted at 900C degr. to Zr-P(2)O(7). O031400100049 ANALYSIS (DECAY) O031400100050 ERR-ANALYS Each value is a mean of two or three determinations. O031400100051 STATUS (TABLE) table 2 from JNE,8,231,1959 O031400100052 HISTORY (19970314C) O031400100053 (19970326U) Last checking has been done. O031400100054 (20120527U) SD: Updated to new date formats, O031400100055 corrected according last EXFOR rules and Dict. O031400100056 Ref. on English transl. (SNP,5,24,1967) added. O031400100057 (20151201A) SD: DECAY-DATA corrected in Subents 002-005O031400100058 ENDBIB 56 0 O031400100059 NOCOMMON 0 0 O031400100060 ENDSUBENT 59 0 O031400199999 SUBENT O0314002 20151201 O056O031400200001 BIB 5 11 O031400200002 REACTION 1(29-CU-0(P,X)11-NA-24,CUM,SIG) O031400200003 2(29-CU-0(P,X)15-P-32,,SIG) O031400200004 SAMPLE Spectrographic analysis of the copper showed the O031400200005 presence of: Ca ~ 0.002%, Mn ~ 0.005%, O031400200006 Ag ~ 0.0002% and Fe,Ni,Cd ~ 0.001%. O031400200007 COMMENT -By Compiler- P-32 production due to radioactive decay O031400200008 of Si-32 /half-Life 172. years/ is negligible. O031400200009 DECAY-DATA1(11-NA-24,15.HR,B-,1400.). Observed decay-data. O031400200010 2(15-P-32,14.5D,B-,1700.). Observed decay-data. O031400200011 HISTORY (20151201A) SD: Half-life of P-32 corrected. SF5=IND O031400200012 deleted from REACTION (2). O031400200013 ENDBIB 11 0 O031400200014 NOCOMMON 0 0 O031400200015 DATA 3 5 O031400200016 EN DATA 1DATA 2 O031400200017 MEV MB MB O031400200018 120. 0.09E-02 0.07E-02 O031400200019 220. 0.22E-02 0.22E-02 O031400200020 340. 1.3E-02 1.8E-02 O031400200021 480. 5.6E-02 24.E-02 O031400200022 660. 25.E-02 31.E-02 O031400200023 ENDDATA 7 0 O031400200024 ENDSUBENT 23 0 O031400299999 SUBENT O0314003 20151201 O056O031400300001 BIB 5 10 O031400300002 REACTION 1(57-LA-139(P,X)11-NA-24,CUM,SIG) O031400300003 2(57-LA-139(P,X)15-P-32,,SIG) O031400300004 SAMPLE The lanthanum oxide contained Pr(2)O(3) <=0.02% and O031400300005 Ce(2)O(3) <= 0.02%. O031400300006 COMMENT -By Compiler- P-32 production due to radioactive decay O031400300007 of Si-32 /half-Life 172. years/ is negligible. O031400300008 DECAY-DATA1(11-NA-24,15.HR,B-,1400.). Observed decay-data. O031400300009 2(15-P-32,14.5D,B-,1700.). Observed decay-data. O031400300010 HISTORY (20151201A) SD: Half-life of P-32 corrected. SF5=IND O031400300011 deleted from REACTION (2). O031400300012 ENDBIB 10 0 O031400300013 NOCOMMON 0 0 O031400300014 DATA 3 5 O031400300015 EN DATA 1DATA 2 O031400300016 MEV MB MB O031400300017 120. 0.099E-02 O031400300018 220. 0.3E-02 O031400300019 340. 0.5E-02 0.73E-02 O031400300020 480. 2.E-02 1.4E-02 O031400300021 660. 21.E-02 O031400300022 ENDDATA 7 0 O031400300023 ENDSUBENT 22 0 O031400399999 SUBENT O0314004 20151201 O056O031400400001 BIB 4 8 O031400400002 REACTION 1(79-AU-197(P,X)11-NA-24,CUM,SIG) O031400400003 2(79-AU-197(P,X)15-P-32,,SIG) O031400400004 COMMENT -By Compiler- P-32 production due to radioactive decay O031400400005 of Si-32 /half-Life 172. years/ is negligible. O031400400006 DECAY-DATA1(11-NA-24,15.HR,B-,1400.).Observed decay-data. O031400400007 2(15-P-32,14.5D,B-,1700.).Observed decay-data. O031400400008 HISTORY (20151201A) SD: Half-life of P-32 corrected. SF5=IND O031400400009 deleted from REACTION (2). O031400400010 ENDBIB 8 0 O031400400011 NOCOMMON 0 0 O031400400012 DATA 3 4 O031400400013 EN DATA 1DATA 2 O031400400014 MEV MB MB O031400400015 220. 0.59E-02 O031400400016 340. 0.13E-02 0.3E-02 O031400400017 480. 3.7E-02 1.1E-02 O031400400018 660. 8.1E-02 2.2E-02 O031400400019 ENDDATA 6 0 O031400400020 ENDSUBENT 19 0 O031400499999 SUBENT O0314005 20151201 O056O031400500001 BIB 5 10 O031400500002 REACTION 1(90-TH-232(P,X)11-NA-24,CUM,SIG) O031400500003 2(90-TH-232(P,X)15-P-32,,SIG) O031400500004 SAMPLE The Metallic thorium contained: Na ~ 0.01%, O031400500005 Mg ~ 0.005%, Ca < 0.0001%, Mn ~ 0.001% and Pb ~ 0.001%.O031400500006 COMMENT -By Compiler- P-32 production due to radioactive decay O031400500007 of Si-32 /half-Life 172. years/ is negligible. O031400500008 DECAY-DATA1(11-NA-24,15.HR,B-,1400.). Observed decay-data. O031400500009 2(15-P-32,14.5D,B-,1700.). Observed decay-data. O031400500010 HISTORY (20151201A) SD: Half-life of P-32 corrected. SF5=IND O031400500011 deleted from REACTION (2). O031400500012 ENDBIB 10 0 O031400500013 NOCOMMON 0 0 O031400500014 DATA 3 1 O031400500015 EN DATA 1DATA 2 O031400500016 MEV MB MB O031400500017 480. 18.E-02 3.E-02 O031400500018 ENDDATA 3 0 O031400500019 ENDSUBENT 18 0 O031400599999 ENDENTRY 5 0 O031499999999