ENTRY O1621 20080208 O035O162100000001 SUBENT O1621001 20080208 O035O162100100001 BIB 13 51 O162100100002 TITLE A feasibility study of the cyclotron production of O162100100003 Na-21. O162100100004 AUTHOR (F.Helus, W.Maier-Borst, H.Bauer, L.I.Wiebe) O162100100005 INSTITUTE (2GERDKZ) O162100100006 (1CANALA) O162100100007 REFERENCE (J,JRN,98,371,1986) O162100100008 (C,95VANCOU,,60,1995) It is O1598 and production of O162100100009 F-18 through Ne-20(d,a) reaction. O162100100010 FACILITY (CYCLO,2GERDKZ) the Heidelberg compact cyclotron O162100100011 METHOD (BCINT) O162100100012 SAMPLE The gas target consisted of water-cooled cylindrical O162100100013 stainless-steel chamber(diameter=4 cm*15 cm long O162100100014 internal dimensions) attached via a beam collimator to O162100100015 the cyclotron beam pipe. An Al foil(350 mum) was used O162100100016 to degrade the incident deuteron beam to less than O162100100017 3.0 MeV. Neon gas, 99.99% purity, was passed through O162100100018 the flow meter, drying columns of silica gel and O162100100019 magnesium perchlorate, prior to reaching the target O162100100020 cavity. O162100100021 For measurement of the charge of the Na-21 species O162100100022 produced during the nuclear reaction special water- O162100100023 cooled steel target, diameter=8.2 cm*15 cm long, O162100100024 internal dimensions, was constructed. This system was O162100100025 also used to determine the charge of the F-18 species O162100100026 produced via the Ne-20(d,a)F-18(See O1598) reaction. O162100100027 A second electrode system was used for measurement of O162100100028 the charge of Na-21 species swept out of the productionO162100100029 target by Ne gas. O162100100030 CORRECTION All results were corrected to the end of bombardment. O162100100031 COMMENT *By authors*.The experimental setup consisted of the O162100100032 reaction chamber-target, a capillary tube, traps and O162100100033 system for the measurement of the activity. O162100100034 It is generally difficult to express the yields of O162100100035 Na-21, Ne-23 and F-18 -short-lived radionuclides in O162100100036 units of muCi/muAhr. The yield in this work will be O162100100037 expressed as the rate of produced activity in muCi O162100100038 continuously monitored by sweeping gas in a 2.0 ml O162100100039 reservoir in calibrated ionization chamber, O162100100040 approximately 10 m from the target. From these results,O162100100041 knowing the volume of the target chamber and transport O162100100042 system and the flow of the target gas it is possible O162100100043 to calculate the activity produced direct in the O162100100044 target. The dependence of the production rate of Na-21 O162100100045 and Ne-23 on the incident energy deuteron beam at 0.5 O162100100046 up to 6.0 MeV was examined. O162100100047 DETECTOR (GELI) a 21 cm**3 Ge(Li) detector. O162100100048 (IOCH) O162100100049 ERR-ANALYS (DATA-ERR).The average error in the cross section O162100100050 production is indicated by authors in table 3. O162100100051 STATUS (TABLE) O162100100052 HISTORY (20080208C) SB O162100100053 ENDBIB 51 0 O162100100054 COMMON 1 3 O162100100055 DATA-ERR O162100100056 PER-CENT O162100100057 10. O162100100058 ENDCOMMON 3 0 O162100100059 ENDSUBENT 58 0 O162100199999 SUBENT O1621002 20080208 O035O162100200001 BIB 2 2 O162100200002 REACTION (10-NE-20(D,N)11-NA-21,,SIG) O162100200003 DECAY-DATA (11-NA-21,22.5SEC,DG,350.5,0.023,AR,511.) O162100200004 ENDBIB 2 0 O162100200005 NOCOMMON 0 0 O162100200006 DATA 2 8 O162100200007 EN DATA O162100200008 MEV MB O162100200009 0.50 33. O162100200010 1.10 190. O162100200011 2.80 430. O162100200012 3.50 500. O162100200013 4.50 580. O162100200014 5.25 560. O162100200015 8.00 550. O162100200016 9.35 420. O162100200017 ENDDATA 10 0 O162100200018 ENDSUBENT 17 0 O162100299999 SUBENT O1621003 20080208 O035O162100300001 BIB 2 2 O162100300002 REACTION (10-NE-22(D,P)10-NE-23,,SIG) O162100300003 DECAY-DATA (10-NE-23,37.6SEC,DG,439.5,0.33,AR,1640.,0.009) O162100300004 ENDBIB 2 0 O162100300005 NOCOMMON 0 0 O162100300006 DATA 2 8 O162100300007 EN DATA O162100300008 MEV MB O162100300009 0.80 70. O162100300010 2.80 84. O162100300011 3.50 194. O162100300012 4.50 375. O162100300013 5.20 820. O162100300014 6.00 410. O162100300015 8.00 390. O162100300016 9.50 360. O162100300017 ENDDATA 10 0 O162100300018 ENDSUBENT 17 0 O162100399999 ENDENTRY 3 0 O162199999999