ENTRY R0027 20191210 R030R002700000001 SUBENT R0027001 20191210 R030R002700100001 BIB 10 34 R002700100002 TITLE The use of a 3 MV Van de Graaff accelerator for the R002700100003 production of 13N-labelled ammonium and nitrate ions R002700100004 for biological experiments R002700100005 AUTHOR (G.S.McNaughton, R.D.More) R002700100006 INSTITUTE (3NZLNZL) Physics and Engineering Laboratory, DSIR, R002700100007 Private Bag, Lower Hutt R002700100008 (3NZLNZH) R002700100009 REFERENCE (J,ARI,30,489,1979) R002700100010 FACILITY (VDG,3NZLNZH) HVEC 3 MV Van de Graaff accelerator R002700100011 SAMPLE - Chemical-form of target is Li2CO3. R002700100012 Prepared by pressing 75+-2 mg(1 mmol) samples of UnilabR002700100013 laboratory reagent grade lithium carbonate into 10 mm R002700100014 diameter discs using a pressure of about 20 tons in**-2R002700100015 (3*1e5 kPa) R002700100016 ANALYSIS (DECAY) R002700100017 ERR-ANALYS No analysis of the error is given by authors. R002700100018 COMMENT The aims of the work are to make labelled nitrate and R002700100019 ammonia solutions of higher 13N activity, to R002700100020 investigate their chemical and radiochemical purity, R002700100021 and to prepare carrier-free solutions suitable for use R002700100022 in biological systems. The main results were as R002700100023 follows. No unwanted isotopes were detected in 2.5-ml R002700100024 carrier-free labelled ammonia solutions but 1 part in R002700100025 1E+4 of the initial activity of the nitrate was 18F. R002700100026 The labelled nitrate solutions contained 13N in nitrateR002700100027 , nitrite and cyanide ions (85%, 3%, and 1%, R002700100028 respectively). Useable yields of 20 muCi of 13N ammoniaR002700100029 and 57 muCi of 13N nitrate were obtained. R002700100030 HISTORY (19871023C) RIKEN Nuclear Data Group R002700100031 (20070714A) On. Changed to lower case and 4-digit year.R002700100032 EXP in SF9 deleted. INSTITUTE corrected. R002700100033 (20070815A) On. STATUS moved R002700100034 (20191210A) Tada. REACTION: Corrected. TIME-IRRD: AddedR002700100035 REFERENCE: modified. R002700100036 ENDBIB 34 0 R002700100037 NOCOMMON 0 0 R002700100038 ENDSUBENT 37 0 R002700199999 SUBENT R0027002 20191210 R030R002700200001 BIB 5 11 R002700200002 REACTION (6-C-CMP(D,X)7-N-13,,TTY,,EOB) R002700200003 METHOD (EXTB,ACTIV,SITA) R002700200004 COMMENT The product yields shown below were those at the end R002700200005 of bombardment under the condition of 20 min R002700200006 irradiation. At 2.50 MeV of incident deuterons two dataR002700200007 points were given by authors. R002700200008 STATUS (CURVE) Scanned from Fig.4, p492 in reference R002700200009 HISTORY (20070714A) On. IND in SF5 deleted R002700200010 (20070815A) On. STATUS added R002700200011 (20191210A) Tada. SF1: CMP used. SF3: N->X. R002700200012 SF8: EOB added. TIME-IRRD: Added. R002700200013 ENDBIB 11 0 R002700200014 COMMON 1 3 R002700200015 TIME-IRRD R002700200016 MIN R002700200017 20. R002700200018 ENDCOMMON 3 0 R002700200019 DATA 2 4 R002700200020 EN DATA R002700200021 MEV MUCI/MUA R002700200022 1.32 42. R002700200023 1.97 154. R002700200024 2.50 224. R002700200025 2.50 206. R002700200026 ENDDATA 6 0 R002700200027 ENDSUBENT 26 0 R002700299999 ENDENTRY 2 0 R002799999999