ENTRY D4201 20080828 D064D420100000001 SUBENT D4201001 20080828 D064D420100100001 BIB 16 52 D420100100002 TITLE Experimental study of the 165Ho(p,n) nuclear reaction D420100100003 for production of the therapeutic radioisotope 165Er D420100100004 AUTHOR (F.Tarkanyi, A.Hermanne, S.Takacs, F.Ditroi, B.Kiraly, D420100100005 S.F.Kovalev, A.V.Ignatyuk) D420100100006 INSTITUTE (3HUNDEB,2BLGVUB,4RUSFEI) D420100100007 REFERENCE (J,NIM/B,266,3346,2008) D420100100008 FACILITY (CYCLO,2BLGVUB) CGR-560 cyclotron D420100100009 SAMPLE Ho foils (25 micron) and Ti foils (12 micron) from D420100100010 Goodfellow D420100100011 METHOD (STTA,ACTIV,EXTB,GSPEC) D420100100012 Incident proton energies: 16 and 37 MeV, D420100100013 beam currents: 150-180 nA, D420100100014 irradiation times: 0.5-1.0 h. D420100100015 A Faraday-cup was used to control the beam intensity D420100100016 parameters. D420100100017 The samples were measured several times without D420100100018 chemical separation. D420100100019 The primary beam energy was estimated from the D420100100020 parameters of the acceleration and of the extraction D420100100021 calibrated by TOF method. D420100100022 DETECTOR (XHPGE,HPGE) X- and gamma-ray spectrometers D420100100023 The efficiency of the detector was determined using D420100100024 certified 152Eu, 241Am and 129I sources. D420100100025 MONITOR (22-TI-0(P,X)23-V-48,,SIG) D420100100026 MONIT-REF (,F.Tarkanyi+,R,IAEA-TECDOC-1211,49,2001) Chapter 4 D420100100027 (D4106002,S.Takacs+,J,NIM/B,188,106,2002) D420100100028 (,S.Takacs,W,Takacs,20080301) To be published. D420100100029 REL-REF (N,,ANDERSEN+,B,ANDERSEN,,1977) Volume 3 D420100100030 The energy degradation as a function of depth in the D420100100031 stack was determined by a calculation based on the D420100100032 well defined input energy and target thicknesses. D420100100033 DECAY-DATA Decay data were taken from NuDat database. D420100100034 ERR-ANALYS (EN-ERR) Not detailed. D420100100035 (ERR-T) The uncertainties were estimated in the D420100100036 standard way: the independent relative errors of the D420100100037 linearly contributing processes D420100100038 (number of the bombarding particles, D420100100039 number of the target nuclei, D420100100040 decay data, D420100100041 detector efficiency and D420100100042 peak area) D420100100043 were summed quadratically and the square root of the D420100100044 sum was taken. D420100100045 ADD-RES (COMP) The measured experimental data were compared to D420100100046 those found in the literature. D420100100047 (THEO) The measured experimental data were compared to D420100100048 and analyzed with theoretical calculations based on D420100100049 the model code ALICE-IPPE, EMPIRE-II and GNASH. D420100100050 (TTY-C) On the basis of the new experimental cross D420100100051 sections integral yields were calculated. D420100100052 STATUS (APRVD) S. Takacs, 2008.09.01. D420100100053 HISTORY (20080828C) KB D420100100054 ENDBIB 52 0 D420100100055 NOCOMMON 0 0 D420100100056 ENDSUBENT 55 0 D420100199999 SUBENT D4201002 20080828 D064D420100200001 BIB 4 18 D420100200002 REACTION (67-HO-165(P,N)68-ER-165,,SIG) D420100200003 METHOD As 165Er has no gamma line, it was quantified by the D420100200004 characteristic X-ray line of its decay product 165Ho. D420100200005 The 165Er activity was determined from spectra D420100200006 measured after the total decay of 161Er and 163Er, D420100200007 ensuring that also the signals from the directly D420100200008 produced 161-164Ho isomers had disappeared. D420100200009 To determine the activities in addition to the well D420100200010 known corrections for pile-up and background in the D420100200011 low energy region, the self-absorption of the 165Ho D420100200012 X-rays in the target material were also taken into D420100200013 account. D420100200014 DECAY-DATA (68-ER-165,10.36HR,XR,46.7,0.215, D420100200015 XR,47.547,0.379, D420100200016 XR,53.695,0.0399, D420100200017 XR,53.877,0.0773, D420100200018 XR,55.293,0.0259) D420100200019 STATUS (TABLE) Data were taken from Table 2 of the Ref. D420100200020 ENDBIB 18 0 D420100200021 NOCOMMON 0 0 D420100200022 DATA 4 23 D420100200023 EN EN-ERR DATA ERR-T D420100200024 MEV MEV MB MB D420100200025 5.5 0.8 4.38 0.51 D420100200026 7.0 0.7 28.9 3.3 D420100200027 8.3 0.6 135. 15. D420100200028 9.5 0.6 172. 19. D420100200029 10.6 0.5 151. 17. D420100200030 11.6 0.4 119. 14. D420100200031 12.5 0.4 100. 11. D420100200032 13.4 0.4 83.3 9.4 D420100200033 14.2 0.3 72.2 8.6 D420100200034 15.1 0.3 57.6 6.3 D420100200035 15.8 0.3 41.3 4.8 D420100200036 16.8 1.5 45.0 5.3 D420100200037 19.4 1.3 39.1 4.9 D420100200038 21.7 1.1 36.3 4.5 D420100200039 23.9 0.9 33.6 4.2 D420100200040 25.9 0.8 31.3 3.9 D420100200041 27.8 0.6 23.0 3.0 D420100200042 29.6 0.5 23.7 3.0 D420100200043 31.3 0.5 24.9 3.1 D420100200044 33.0 0.4 23.3 3.0 D420100200045 34.6 0.3 22.7 2.9 D420100200046 36.1 0.3 21.0 2.8 D420100200047 37.6 0.3 17.8 2.1 D420100200048 ENDDATA 25 0 D420100200049 ENDSUBENT 48 0 D420100299999 ENDENTRY 2 0 D420199999999